CN115789410A - Support platform and radiation inspection equipment - Google Patents

Support platform and radiation inspection equipment Download PDF

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Publication number
CN115789410A
CN115789410A CN202111056437.3A CN202111056437A CN115789410A CN 115789410 A CN115789410 A CN 115789410A CN 202111056437 A CN202111056437 A CN 202111056437A CN 115789410 A CN115789410 A CN 115789410A
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China
Prior art keywords
platform
movable supporting
supporting
movable
top plate
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CN202111056437.3A
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Chinese (zh)
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CN115789410B (en
Inventor
何远
李洪旗
王强强
史俊平
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Nuctech Co Ltd
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Nuctech Co Ltd
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Abstract

The present disclosure provides a support platform and a radiation inspection apparatus. The supporting platform comprises a bottom platform, and the bottom platform comprises: the platform top plate is used for bearing an object; and the movable supporting device is used for supporting the platform top plate and comprises a plurality of movable supporting parts and a driving part which is arranged corresponding to the movable supporting parts, the driving part is configured to drive the corresponding movable supporting parts to switch between a supporting state and an avoiding state, in the supporting state, the movable supporting parts are abutted against the bottom surface of the platform top plate, in the avoiding state, the movable supporting parts are separated from the bottom surface of the platform top plate, and each movable supporting part of the movable supporting device is switched between the supporting state and the avoiding state singly or in groups to allow the moving part to pass through between the platform top plate and the movable supporting parts in the avoiding state when the platform top plate is supported by the movable supporting parts in the supporting state. The support platform is suitable for work applications where it is necessary to pass moving parts beneath the platform roof while stably supporting an object on the platform roof.

Description

Support platform and radiation inspection equipment
Technical Field
The present disclosure relates to the field of radiation imaging technology, and in particular, to a support platform and a radiation inspection apparatus.
Background
In the related art, the supporting platform generally includes a fixed supporting platform and a movable supporting platform, and a moving part cannot pass through between the top plate of the fixed supporting platform and the supporting device of the top plate of the movable supporting platform, so that the application of the supporting platform itself or the design of the equipment applying the supporting platform is correspondingly limited.
Disclosure of Invention
The utility model aims to provide a supporting platform and radiation inspection equipment, aim at can realize moving part and remove under supporting platform's platform bottom plate under the prerequisite of the steady object that supports of supporting platform.
The present disclosure provides a support platform, including the bottom platform, the bottom platform includes:
the platform top plate is used for bearing an object; and
the movable supporting device is used for supporting the platform top plate and comprises a plurality of movable supporting parts and driving parts which are arranged corresponding to the movable supporting parts, the driving parts are configured to drive the corresponding movable supporting parts to be switched between a supporting state and an avoiding state, in the supporting state, the movable supporting parts are abutted against the bottom surface of the platform top plate, in the avoiding state, the movable supporting parts are separated from the bottom surface of the platform top plate, and each movable supporting part of the movable supporting device is switched between the supporting state and the avoiding state individually or in groups to allow a moving part to pass through between the platform top plate and the movable supporting parts in the avoiding state when the platform top plate is supported by the movable supporting parts in the supporting state.
In some embodiments of the present invention, the,
each movable supporting part is in driving connection with the same driving part; or
Each movable supporting part is divided into a plurality of movable supporting groups, and each movable supporting group is correspondingly provided with one driving part; or
Each movable supporting part is correspondingly provided with one driving part.
In some embodiments, further comprising:
a sensor configured to detect position information of the moving part; and
and the controller is in signal connection with the sensor and the driving part and is configured to operate the driving part to drive the movable supporting part to switch between the supporting state and the avoiding state according to the position information detected by the sensor.
In some embodiments, the movable support portion is telescopically arranged and/or the movable support portion is rotatably arranged to switch between the support state and the avoidance state.
In some embodiments of the present invention, the,
the movable supporting part comprises a telescopic cylinder, a nut screw assembly, a cam mandril assembly and a cam or connecting rod structure; and/or
The driving part includes an electric motor or a hydraulic motor.
In some embodiments, the bottom platform further comprises a fixed support arrangement comprising at least one fixed support supporting the platform top plate.
In some embodiments, the fixing support device includes a plurality of fixing support portions respectively disposed at both ends of the platform top plate.
A second aspect of the present disclosure provides a radiation inspection apparatus, characterized by comprising a bottom detection arm and the support platform of the first aspect of the present disclosure, wherein the moving part comprises the bottom detection arm.
Based on this disclosure provides a supporting platform, the supporting structure who is used for supporting platform bottom plate of its bottom platform includes movable supporting device, switches between its support state and dodge the state through each movable supporting part of movable supporting device, can make the platform roof keep under the state of being supported, dodges the moving part that passes through the platform roof below, and this supporting platform is fit for the occasion that passes through the moving part below the platform roof when needing stable support object on the platform roof.
When the supporting platform is applied to radiation inspection equipment, an object to be inspected can be stably supported on a platform top plate of the supporting platform, a bottom detection arm is enabled to move below the platform top plate as a moving part, a scanning device for realizing a top view angle in the movable radiation inspection equipment is facilitated, detection images of the top view angle of the object to be inspected are guaranteed not to be influenced or less to be influenced by changes of the supporting part of the object to be inspected at different positions, and the quality of the detection images is improved.
Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, 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 embodiment(s) of the disclosure and together with the description serve to explain the disclosure and not to limit the disclosure. In the drawings:
fig. 1 is a schematic view of the working principle of a bottom platform of a supporting platform and a movable supporting device thereof according to an embodiment of the disclosure.
Fig. 2 is a schematic control principle diagram of a movable supporting device of a supporting platform according to an embodiment of the disclosure.
Fig. 3 is a schematic structural diagram of a radiation inspection apparatus according to an embodiment of the present disclosure.
Fig. 4 is a schematic sectional structural view of the radiation inspection apparatus of the embodiment shown in fig. 3.
Fig. 5 is a schematic cross-sectional structural view of a radiation inspection apparatus of another embodiment.
Fig. 6 is a schematic view of the working principle of the bottom platform of the supporting platform and the movable supporting device thereof according to another embodiment of the disclosure.
Fig. 7 is a schematic view illustrating the operation principle of the bottom platform of the supporting platform and the movable supporting device thereof according to still another embodiment of the disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the 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 derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present disclosure, it should be understood that the terms "first", "second", etc. are used to define the components, and are used only for convenience of distinguishing the corresponding components, and if not otherwise stated, the terms have no special meaning, and thus, should not be construed as limiting the scope of the present disclosure.
In the description of the present disclosure, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are presented only for the convenience of describing and simplifying the disclosure, and in the absence of a contrary indication, these directional terms are not intended to indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the disclosure; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
As shown in fig. 1, embodiments of the present disclosure provide a support platform. The support platform mainly comprises a bottom platform 4. The bottom platform 4 mainly comprises a platform top plate 41 and a movable support 42. The table top 41 is used to carry an object, such as an object under examination by a radiation inspection apparatus. The platform top plate 41 is supported on a movable support 42. The movable supporting means includes a plurality of movable supporting portions 421 and driving portions 422 provided corresponding to the plurality of movable supporting portions 421. The driving portion 422 is configured to drive the corresponding movable supporting portion 421 to switch between the supporting state and the retracted state. In the supporting state, the movable supporting portion 421 abuts against the bottom surface of the table top 41. In the retracted state, the movable support portion 421 is separated from the bottom surface of the deck top plate 41. Each movable supporting portion 421 of the movable supporting device 42 is switched between the supporting state and the retracted state individually or in groups to allow the moving member to pass between the platform top plate 41 and the movable supporting portion 421 in the retracted state while the platform top plate 41 is supported by the movable supporting portion 421 in the supporting state.
Wherein, each movable supporting portion 421 can be connected with the same driving portion 422 in a driving manner; or each movable support 421 may be divided into a plurality of movable support groups, and each movable support group is correspondingly provided with one driving part 422; or one driving part 422 is correspondingly arranged on each movable supporting part 421.
In the supporting platform of the embodiment of the present disclosure, the supporting structure of the bottom platform 4 for supporting the platform bottom plate 41 includes the movable supporting device 42, and the platform top plate 41 can be kept in the supported state and can avoid the moving part passing below the platform top plate 41 by switching the movable supporting portions 421 of the movable supporting device 42 between the supporting state and the avoiding state, so that the supporting platform is suitable for the situation where an object needs to be stably supported on the platform top plate 41 and simultaneously passes through the moving part below the platform top plate 41.
As shown in fig. 2, in some embodiments, the support platform further comprises a sensor 6 and a controller 7. The sensor 6 is configured to detect position information of the moving part. 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 to drive the movable supporting part 421 to switch between the supporting state and the avoiding state according to the position information detected by the sensor 6. The sensor 6 and the controller 7 are provided to automatically monitor the position of the moving member and automatically control the driving portion, thereby automatically avoiding the moving member by each of the movable supporting portions 421.
In some embodiments, the movable support 421 includes a telescoping cylinder, a nut and screw assembly, a cam ram assembly, a cam, or a linkage arrangement. In some embodiments, the drive portion comprises an electric or hydraulic motor.
In some embodiments, the bottom platform 4 further comprises a fixed support 43, the fixed support 43 comprising at least one fixed support 431 supporting the platform top plate 41. The arrangement of the fixing and supporting device 43 is beneficial to reducing the arrangement cost and improving the supporting stability of the platform top plate 4.
The fixed supporting means 43 includes a plurality of fixed supporting portions 431 respectively provided at both ends of the table top plate 41. This arrangement is suitable for the moving member reciprocating between both ends of the table top plate 41, and contributes to reduction of the installation cost and improvement of the support stability of the table top plate 4.
The embodiment of the present disclosure further provides a radiation inspection apparatus, which includes a bottom detection arm and the aforementioned support platform, and the moving component includes the bottom detection arm.
When the supporting platform is applied to radiation inspection equipment, an object to be inspected can be stably supported on a platform top plate 41 of the supporting platform, a bottom detection arm moves below the platform top plate 41, a scanning device for realizing a top view angle in the movable radiation inspection equipment is facilitated, detection images of the top view angle of the object to be inspected are guaranteed not to be influenced or less influenced by changes of supporting parts of the object to be inspected at different positions, and the quality of the detection images is improved.
The following describes the support platform and its application of the present disclosure in detail by taking a radiation inspection apparatus as an example, with reference to fig. 1 to 5.
Fig. 1-2 illustrate a support platform of an embodiment of the present disclosure. Figures 3 to 5 show a radiation inspection apparatus employing the support platform of figures 1 to 2.
As shown in fig. 3 to 5, the radiation inspection apparatus includes a fixed gantry 1, a movable gantry 2, a scanning device 3, and a support platform. The support platform comprises a base platform 4, sensors 6 and a controller 7.
The fixed frame 1 includes a fixed frame body 11 and a rail 12 disposed 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. The movable frame 2 is configured to be carried on the fixed frame 1 by a traveling device 22 and to be capable of reciprocating along the rail 12. The scanning device 3 includes a radiation source 31 and a detector 32, and the radiation source 31 and the detector 32 are disposed on the movable gantry 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 an object to be inspected. The fixed gantry body 11, the movable gantry body 21 and the table top plate 41 form a scanning tunnel P of the radiation inspection apparatus.
When the radiation inspection equipment inspects an inspected object such as a vehicle, the traveling device 22 drives the movable rack body 21 to travel along the rail 12, so that the scanning device 3 carried on the movable rack body 21 moves synchronously with the movable rack 2. Since the rail 12 is disposed on the fixed frame 1, rather than on the ground or on a rail disposed on the ground, the traveling device 22 can travel smoothly on the rail 12 with little influence of the flatness of the ground by only firmly disposing the fixed frame 1 on the ground, and therefore, the movable frame 2 and the scanning device 3 thereon can move smoothly relative to the fixed frame 1. It is advantageous to ensure that the acquired image is not degraded by the jitter generated by the scanning device 3. On the other hand, the method is also beneficial to reducing or not consuming civil engineering cost. Because the scanning device 3 moves back and forth along with the walking device 22 and the detected object can be placed on the bottom platform 4 to be statically scanned and detected, the length of the fixed frame 1 is only longer than that of a single detected object, and the size and the weight of the radiation detection equipment are favorably reduced compared with the arrangement mode that the scanning device 3 is fixed and the detected object moves.
As shown in fig. 3 and 4, in some embodiments, the travel assembly 22 includes a plurality of travel wheels 221 and a travel drive assembly 222. The plurality of road wheels 221 include drive wheels in driving connection with a travel drive 222. The travel driving device 222 is, for example, a rotating electric machine. A transmission, for example comprising a reduction gear, may also be provided between the travel drive 22 and the drive wheels. In order to make the running gear 22 run smoothly, the running gear may further include a guide wheel or the like engaged with a side surface of the rail.
As shown in fig. 3, the rail 12 is disposed in the left-right direction in the drawing (corresponding to the front-back direction in fig. 4 and 5), and the scanning path P formed by the fixed frame body 11, the movable frame body 21, and the table top 41 is also disposed in the left-right direction in fig. 3 (corresponding to the front-back direction in fig. 4 and 5).
The fixing bracket 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 more firm, structures such as middle longitudinal beams, oblique beams and the like can be arranged at the top, the bottom and the transverse two sides, and reinforcing structures such as reinforcing plates and the like can be arranged properly.
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 "lateral" 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. 3 to 5, the movable frame body 21 includes a top cross member 211, a vertical arm 212, and a bottom cross member 213. The traveling device 22 is mounted on the top cross member 211. The top ends of the two vertical arms 212 are connected to the two ends of the top cross beam 211 respectively. The bottom cross beam 213 is disposed below the platform top plate 41, and two ends of the bottom cross beam 213 are connected to bottom ends of the two vertical arms 212, respectively. This setting makes activity frame body 21 form square frame on the whole, does benefit to the structural strength of activity frame body 21 itself to do benefit to and reduce the deformation, do benefit to and reduce the relative position change between scanning device 3's radiation source 31 and detector 32, thereby do benefit to and acquire the stability and the accuracy of image.
In the radiation inspection apparatus of some embodiments, the radiation source 31 includes a top radiation unit 311 and a side radiation unit 312; the detector includes a bottom detection unit 321 and a side detection unit 322.
The radiation inspection equipment of the embodiment of the disclosure is beneficial to forming the scanning unit with the top view angle and forming the scanning unit with the side view angle, and the configuration of the scanning device 3 is flexible.
As shown in fig. 4, the scanning unit of the top view angle includes the top radiation unit 311 of the radiation source 31 and the bottom detection unit 321 of the detector 32, and may also include the side detection unit 322.
As shown in fig. 5, the scanning unit of the side view angle includes a side radiation unit 311 of the radiation source 31 and a side detection unit 322 of the detector 32. The scanning device 3 includes both a top view scanning unit and a side view scanning unit.
As shown in fig. 3 to 5, the top radiating element 311 is disposed on the top beam 211; the side radiating element 312 is disposed on the vertical arm 212; the side detection unit 322 is disposed on the vertical arm 212; the bottom detection unit 321 is disposed on the bottom cross member 213.
Side detection unit 322 is mounted within vertical arm 212. The side detection unit 322 and the vertical arm 212 constitute a side detection arm.
The bottom detection unit 321 is mounted within the bottom beam 213. The bottom detection unit 321 and the bottom cross member 213 constitute a bottom detection arm that reciprocates as a moving member below the table top 41.
As shown in fig. 1, in some embodiments, the radiation inspection apparatus may further include a ramp 5 disposed at an end of the bottom platform 4, and the height of the ramp 5 gradually decreases from the end of the bottom platform 4 to a side away from the bottom platform 4. The sloping platforms 5 are arranged to facilitate the upper and lower bottom platforms 4 of the object to be detected. 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 inspection efficiency is improved.
The ramp 5 and the bottom platform 4 may be separate, detachably connected or integrally provided.
As shown in fig. 1 and 2, in the radiation inspection apparatus of the embodiment of the present disclosure, a bottom detection unit 321 is provided below the table top plate 41, and in order to reduce the influence of the bottom table on the image quality as much as possible, the bottom table 4 includes a movable support 42. The movable supporting means 42 includes a plurality of movable supporting portions 421 and driving portions 422 provided corresponding to the plurality of movable supporting portions 421. The driving portion 422 is configured to drive the corresponding movable supporting portion 421 to switch between the supporting state and the retracted state. In the supporting state, the movable supporting portion 421 abuts against the bottom surface of the deck top plate 41, and the movable supporting portion 421 supports the deck top plate 41. In the retracted state, the movable support portion 421 is separated from the bottom surface of the deck top plate 41, and the movable support portion 421 temporarily does not support the deck top plate 41. In the retracted state, in order for the bottom detection arm to smoothly pass between each movable supporting portion 421 and the platform top plate 41, the interval between each movable supporting portion 421 and the platform top plate 41 is larger than the height of the bottom cross beam 213 and the bottom detection unit 321 thereon (the height of the bottom detection arm), so that the interval between the movable supporting portion 421 and the platform top plate 41 is configured to be suitable for the bottom of the movable rack body 21 to pass between the platform top plate 41 and the movable supporting device 42 in the retracted state.
In some embodiments, as shown in fig. 2, to achieve automatic switching of the operating states of the plurality of movable supporting portions 421, the radiation inspection apparatus further includes a sensor 6 and a controller 7. The sensor 6 is configured to detect position information of the bottom feeler arm. 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 to drive the movable supporting part 421 to switch between the supporting state and the avoiding state according to the position information detected by the sensor 6.
The Controller 7 may be implemented as a general purpose Processor, a Programmable Logic Controller (PLC), a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (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-ram assembly, a cam or a connecting rod structure, etc.; the driving unit 422 includes an electric motor, a hydraulic motor, or the like. Further, a transmission device may be appropriately provided between the driving portion and the support portion. The transmission device can realize functions such as speed changing, reversing, synchronizing and the like, such as a gear transmission device, a gear and gear rod transmission device, a worm and gear transmission device and the like.
By controlling the working state of each movable supporting device 42 to be in a supporting state or an avoiding state, the barrier-free movement and inspection of the bottom detecting unit 321 can be realized on the basis of thinner platform top plate 41 and no or few reinforcing structures, so that a clearer top view angle scanning image can be obtained by using a lower-power top radiating unit.
Each radiation unit of the radiation source may include, for example, an accelerator, an X-ray machine, an isotope emitting device, and the like. Each detection unit 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. 1, the bottom platform 4 further includes a fixed supporting device 43, the fixed supporting device 43 includes a plurality of fixed supporting portions 431 respectively supported at both 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 both ends of the platform top plate 41.
The fixed supporting device 43 is arranged, so that the platform top plate 41 can be firmly installed conveniently, the position is accurate, and the stable placement of the detected object can be ensured conveniently.
The working principle of the supporting platform according to an embodiment of the present disclosure is described below with reference to fig. 1 and 2. In fig. 1, for illustrating the working principle, the movable supporting device 42 only shows the retractable movable supporting portion 421, and the rest is not shown. The portion where the movable frame body 21 interferes with the movable support 42 relates to the bottom cross member 213 of the movable frame body 21.
Fig. 1 shows the operation state switching process of the stroke-dependent movable supporting portion 421 at the beginning of the movement of the movable frame body 21 from the right side to the left side from the top to the bottom. Fig. 2 shows a control block diagram for controlling the operation of the movable supporting portion 421. The movable support 421 is a telescopic rod, and is in a support state abutting against the lower surface of the platform top plate 41 when extending upward, and is in an avoidance state separating from the lower surface of the platform top plate 41 to avoid the movable frame body 21 when retracting downward.
Firstly, the movable rack body 21 starts to move rightwards, the sensor 6 sends the detected position information of the bottom cross beam 213 to the controller 7, the controller 7 sends an instruction to the driving part 422 in driving connection with the movable supporting part 421 on the left side of the movable rack body 21 according to the position information, the driving part 422 operates to drive the movable supporting part 421 to contract downwards and gradually get away from the bottom surface of the platform top plate 41, so that an interval which is enough for the bottom cross beam 213 of the movable rack body 21 to pass through is formed between the movable supporting part 421 and the platform top plate 41 to be in a retreating state, and meanwhile, the supporting parts 422 at the rest positions keep the supporting state to ensure that the platform top plate 41 has enough supporting force. The bottom cross member 213 of the movable frame body 21 then passes through the space. After the controller 7 determines that the bottom cross member 213 has passed the movable supporting portion 421 according to the position information of the sensor 6, the driving portion 422 is controlled to drive the movable supporting portion 421 to extend upward until the supporting state is returned. Then the controller 7 drives the driving part 422 corresponding to the next lower movable supporting part 421 to move so as to switch the next movable supporting part 421 to the avoiding state, after the bottom cross beam 213 passes through, the next movable supporting part 421 extends upwards to return to the supporting state, and so on until the movable rack body 21 moves to the leftmost end of the bottom platform 4, and one scanning is completed. Accordingly, the movable frame body 21 can move from the right side to the left side without hindrance while the movable supporting device 42 and the fixed supporting device 43 support the platform top plate 41 stably as a whole.
Similarly, the movable frame body 21 can move from the left side to the right side without hindrance 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 process that activity frame body 21 removed, the structure between testee and bottom detecting element 321 remains unanimous throughout, is platform roof 41 throughout to platform roof 41 and bottom crossbeam 213 keep unanimous to the influence of the inspection image at top visual angle, consequently, the image quality at the top visual angle that obtains is higher, can not produce additional image, does benefit to and accelerates the recognition speed.
In some examples, the bottom platform 4 is fixedly connected to the stationary gantry body 11. The arrangement is favorable for 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 detected object, thereby being favorable for acquiring high-quality scanning images. In addition, the requirement on the ground can be further reduced, and the radiation inspection equipment can be rapidly arranged. The bottom platform 4 and the fixed frame body 11 may be detachably and fixedly connected, or may be integrally disposed.
When the radiation inspection equipment of the embodiment of the present disclosure performs an 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 passageway P, the scanning device 3 can move along the rail 12 along the track 12 in the arrow direction in fig. 3 under the driving of the moving device 22, the radiation source 31 emits scanning rays during the moving 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 view illustrating the operation principle of the bottom platform of the supporting platform and the movable supporting device thereof according to another embodiment of the present disclosure. The bottom platform and the movable supporting device thereof in the embodiment shown in fig. 6 are different from the bottom platform and the movable supporting device thereof shown in fig. 1 to 2 in that the movable supporting portion 421 is rotatably disposed and is switched between the supporting state and the avoiding state by the rotation of the movable supporting portion 421. In the embodiment shown in fig. 6, the movable supporting portion 421 of the movable supporting means is rotated about a horizontal rotation axis located at the bottom of the movable supporting portion 421 in the supporting state.
The non-illustrated portions of the base platform and its movable support of the embodiment of fig. 6 can all be referred to the description of the previous embodiments.
Fig. 7 is a schematic view of the operation principle of the bottom platform of the supporting platform and the movable supporting device thereof according to still another embodiment of the disclosure. The bottom platform and its movable supporting device of the embodiment shown in fig. 7 are the same as the bottom platform and its movable supporting device shown in fig. 6 in that its movable supporting portion 421 is also rotatably disposed, and the switching between the supporting state and the avoiding state is realized by the rotation of the movable supporting portion 421. Unlike the embodiment shown in fig. 6, the movable support portion 421 of the movable support means in the embodiment shown in fig. 7 rotates about a horizontal rotation axis located at the middle of the up-down direction of the movable support portion 421 in the supported state.
The non-illustrated parts of the bottom platform and its movable support means of the embodiment shown in fig. 7 can all be referred to the description of the previous embodiments.
As can be seen from the above description of the embodiments, in the supporting platform according to the embodiments of the present disclosure, two ends of the platform top plate of the bottom platform are fixedly supported by the plurality of fixed supporting portions, and the middle portion is supported by the plurality of movable supporting portions. The platform top plate is used as a bearing structure for direct contact between the plurality of supporting parts and the supported object, and the movable supporting part in the middle can be switched between a supporting state and an avoiding state, so that the bottom detection arm can move in a reciprocating mode below the platform top plate and is not influenced by the movable supporting part under the condition of stably supporting the object. The supporting platform is simple in structure and flexible and convenient to use.
Because a plurality of movable supporting parts are arranged, each movable supporting part can be switched between a supporting state and an avoiding state, detection signals of the bottom detection unit are not affected by the bottom platform basically, and therefore the scanning unit of the top visual angle is formed, and the quality of an inspection image of the top visual angle is improved. Because the bottom detection arm is in the process of moving below the platform top plate, the platform top plate is stably supported all the time, and therefore the platform top plate can be made of a relatively thin flat plate, and when the support platform is applied to radiation inspection equipment, the high-quality imaging effect is favorably realized. The supporting platform is favorable for maintaining the object to be detected to be immobile in the radiation inspection process, and the scanning device moves, so that the overall structure size of the radiation inspection equipment is favorably reduced.
Finally, it should be noted that: the above examples are intended only to illustrate the technical solution of the present disclosure and not to limit it; although the present disclosure has been described in detail with reference to preferred embodiments, those of ordinary skill in the art will understand that: modifications to the embodiments of the disclosure or equivalent replacements of parts of the technical features may be made, which are all covered by the technical solution claimed by the disclosure.

Claims (8)

1. A support platform, characterized in that it comprises a bottom platform (4), said bottom platform (4) comprising:
a platform ceiling (41) for carrying an object; and
a movable supporting device (42) for supporting the platform top plate (41), including a plurality of movable supporting portions (421) and a driving portion (422) provided corresponding to the plurality of movable supporting portions (421), the driving portion (422) being 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 a bottom surface of the platform top plate (41) and an avoiding state in which the movable supporting portions (421) are separated from the bottom surface of the platform top plate (41), each of the movable supporting portions (421) of the movable supporting device (42) being switched between the supporting state and the avoiding state individually or in groups to allow a moving member to pass between the platform top plate (41) and the movable supporting portion (421) in the avoiding state when the platform top plate (41) is supported by the movable supporting portion (421) in the supporting state.
2. The support platform of claim 1,
each movable supporting part (421) is in driving connection with the same driving part (422); or
Each movable supporting part (421) is 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 part (421) is correspondingly provided with one driving part (422).
3. The support platform of claim 1, further comprising:
a sensor (6) configured to detect positional information of the moving part; 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) to drive the movable supporting part (421) to switch between the supporting state and the avoiding state according to the position information detected by the sensor (6).
4. The support platform according to claim 1, wherein the movable support portion (421) is telescopically arranged and/or rotatably arranged to switch between the support state and the avoidance state.
5. The support platform of claim 1,
the movable supporting part (421) comprises a telescopic cylinder, a nut screw component, a cam mandril component and a cam or connecting rod structure; and/or
The driving part includes an electric motor or a hydraulic motor.
6. A support platform according to any of claims 1 to 5, wherein the bottom platform (4) further comprises a fixed support arrangement (43), the fixed support arrangement (43) comprising at least one fixed support (431) supporting the platform top plate (41).
7. The support platform according to claim 6, characterized in that the fixed supporting means (43) comprises a plurality of said fixed supporting portions (431) respectively provided at both ends of the platform top plate (41).
8. A radiation inspection apparatus comprising a bottom probe arm and a support platform according to any one of claims 1 to 7, the moving component comprising the bottom probe arm.
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