CN115789410B - Support platform and radiation inspection device - Google Patents

Abstract

The present disclosure provides a support platform and a radiation inspection device. The supporting platform includes the bottom platform, and the bottom platform includes: the platform top plate is used for bearing objects; and a movable supporting device for supporting the platform roof, including a plurality of movable supporting parts and a driving part corresponding to the plurality of movable supporting parts, the driving part is configured to drive the corresponding movable supporting parts to switch between a supporting state in which the movable supporting parts are abutted against the bottom surface of the platform roof and an avoidance state in which the movable supporting parts are separated from the bottom surface of the platform roof, each movable supporting part of the movable supporting device being individually or in groups switched between the supporting state and the avoidance state to allow the moving member to pass between the platform roof and the movable supporting part in the avoidance state when the platform roof is supported by the movable supporting part in the supporting state. The support platform is suitable for working occasions requiring the object to be stably supported on the platform roof and passing through the moving part under the platform roof.

Description

Support platforms 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 radiation inspection equipment.

Background technique

In related technologies, support platforms generally include fixed support platforms and movable support platforms. Moving parts cannot pass between the platform top plate of the two platforms and the support device that supports the platform top plate, which makes the application of the support platform itself or the design of equipment that uses the support platform impossible. subject to corresponding restrictions.

Contents of the invention

The purpose of this disclosure is to provide a support platform and radiation inspection equipment, which are designed to enable the moving parts to move under the platform bottom of the support platform on the premise that the support platform stably supports objects.

The present disclosure provides a support platform, including a bottom platform, where the bottom platform includes:

Platform top plate for carrying objects; and

A movable support device, used to support the platform top plate, includes a plurality of movable support parts and a driving part provided corresponding to the plurality of movable support parts, and the driving part is configured to drive the corresponding movable support part when supporting Switching between the state and the avoidance state, in the support state, the movable support part is in contact with the bottom surface of the platform top plate, and in the avoidance state, the movable support part is separated from the bottom surface of the platform top plate, so Each of the movable support portions of the movable support device switches between the support state and the avoidance state individually or in groups to allow the moving component to be placed in the support state on the platform top plate. When supporting, it passes between the platform top plate and the movable support part in the avoidance state.

In some embodiments,

Each of the movable support parts is drivingly connected to the same driving part; or

Each of the movable support parts is a plurality of movable support groups, and each of the movable support groups is provided with one driving part; or

Each of the movable support parts is provided with one corresponding driving part.

In some embodiments, it also includes:

a sensor configured to detect position information of the moving component; and

A controller, signally connected to the sensor and the driving part, is configured to operate the driving part according to the position information detected by the sensor to drive the movable support part to switch between a support state and an avoidance state. .

In some embodiments, the movable support part is telescopically disposed and/or the movable support part is rotatably disposed to switch between the support state and the avoidance state.

In some embodiments,

The movable support part includes a telescopic cylinder, a nut and screw assembly, a cam ejector assembly, a cam or a connecting rod structure; and/or

The driving part includes an electric motor or a hydraulic motor.

In some embodiments, the bottom platform further includes a fixed support device including at least one fixed support portion supporting a top plate of the platform.

In some embodiments, the fixed support device includes a plurality of fixed support parts respectively provided at both ends of the platform top plate.

A second aspect of the disclosure provides a radiation inspection equipment, which is characterized by including a bottom detection arm and the support platform described in the first aspect of the disclosure, and the moving component includes the bottom detection arm.

Based on the support platform provided by the present disclosure, the support structure of the bottom platform for supporting the bottom plate of the platform includes a movable support device. By switching each movable support part of the movable support device between its support state and the avoidance state, the top plate of the platform can be maintained In the supported state, it avoids moving parts passing under the platform top plate. This support platform is suitable for workplaces where objects need to be stably supported on the platform top plate while moving parts pass under the platform top plate.

When this support platform is used in radiation inspection equipment, it can stably support the inspected object on the platform top plate of the support platform, so that the bottom detection arm can move under the platform top plate as a moving part, which is conducive to achieving top viewing angle in mobile radiation inspection equipment. The scanning device is conducive to ensuring that the detection image of the top angle of the object to be inspected is not or less affected by changes in the supporting components of the object to be inspected at different parts, thereby improving the quality of the inspection image.

Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings.

Description of the drawings

The drawings described here are used to provide a further understanding of the present disclosure and constitute a part of the present application. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation of the present disclosure. In the attached picture:

Figure 1 is a schematic diagram of the working principle of the bottom platform of the support platform and its movable support device according to an embodiment of the present disclosure.

Figure 2 is a schematic diagram of the control principle of the movable support device of the support platform according to an embodiment of the present disclosure.

Figure 3 is a schematic structural diagram of a radiation inspection device according to an embodiment of the present disclosure.

FIG. 4 is a schematic cross-sectional structural view of the radiation inspection equipment according to the embodiment shown in FIG. 3 .

Figure 5 is a schematic cross-sectional structural diagram of a radiation inspection device according to another embodiment.

Figure 6 is a schematic diagram of the working principle of the bottom platform of the support platform and its movable support device according to another embodiment of the present disclosure.

Figure 7 is a schematic diagram of the working principle of the bottom platform of the support platform and its movable support device according to yet another embodiment of the present disclosure.

Detailed ways

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only some of the embodiments of the present disclosure, rather than 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. Based on the embodiments in this disclosure, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of this disclosure.

The relative arrangement of components and steps, numerical expressions, and numerical values set forth in these examples do not limit the scope of the disclosure unless otherwise specifically stated. At the same time, it should be understood that, for convenience of description, the dimensions of various parts shown in the drawings are not drawn according to actual proportional relationships. Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the authorized specification. In all examples shown and discussed herein, any specific values are to be construed as illustrative only and not as limiting. Accordingly, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters refer to similar items in the following figures, so that once an item is defined in one figure, it does not need further discussion in subsequent figures.

In the description of the present disclosure, it should be understood that the use of words such as "first" and "second" to define components is only to facilitate the distinction between corresponding components. Unless otherwise stated, the above words have no special meaning. meaning and therefore cannot be construed as limiting the scope of the present disclosure.

In the description of the present disclosure, it should be understood that the orientation indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, vertical, horizontal" and "top, bottom", etc. Or positional relationships are generally based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present disclosure and simplifying the description. Without explanation to the contrary, these directional words do not indicate and imply the referred devices or elements. Must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be construed as limiting the scope of the present disclosure; the orientation words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

As shown in Figure 1, an embodiment of the present disclosure provides a support platform. The support platform mainly includes the bottom platform 4. The bottom platform 4 mainly includes a platform top plate 41 and a movable support device 42 . The platform top plate 41 is used to carry objects, such as objects to be inspected by radiation inspection equipment. The platform top plate 41 is supported on the movable support device 42 . The movable support device includes a plurality of movable support parts 421 and a driving part 422 provided corresponding to the plurality of movable support parts 421 . The driving part 422 is configured to drive the corresponding movable support part 421 to switch between the support state and the avoidance state. In the supporting state, the movable support portion 421 is in contact with the bottom surface of the platform top plate 41 . In the avoidance state, the movable support part 421 is separated from the bottom surface of the platform top plate 41 . Each movable support portion 421 of the movable support device 42 switches between the support state and the avoidance state individually or in groups to allow the moving parts to move from the platform top plate 41 to the avoidance state when the platform top plate 41 is supported by the movable support portion 421 in the support state. Pass between the movable support parts 421 of the state.

Among them, each movable support part 421 can be driven and connected with the same driving part 422; or each movable support part 421 can be divided into multiple movable support groups, and each movable support group is provided with a corresponding driving part 422; or each movable support part 421 can A driving part 422 is provided.

In the support platform of the embodiment of the present disclosure, the support structure of the bottom platform 4 for supporting the platform bottom plate 41 includes a movable support device 42, and each movable support part 421 of the movable support device 42 is switched between its support state and the avoidance state, The platform top plate 41 can be kept in a supported state to avoid moving parts passing under the platform top plate 41 , so that the support platform is suitable for situations where objects need to be stably supported on the platform top plate 41 while moving parts pass under the platform top plate 41 .

As shown in Figure 2, in some embodiments, the support platform also includes a sensor 6 and a controller 7. The sensor 6 is configured to detect position information of the moving part. The controller 7 is connected with the sensor 6 and the driving part 422 via signals, and is configured to operate the driving part 422 according to the position information detected by the sensor 6 to drive the movable support part 421 to switch between the support state and the avoidance state. Providing the sensor 6 and the controller 7 can realize automatic monitoring of the position of the moving parts and automatic control of the driving part, thereby realizing automatic avoidance of the moving parts by each movable support part 421.

In some embodiments, the movable support portion 421 includes a telescopic cylinder, a nut and screw assembly, a cam jack assembly, a cam or a connecting rod structure. In some embodiments, the drive portion includes an electric motor or a hydraulic motor.

In some embodiments, the bottom platform 4 further includes a fixed support device 43 that includes at least one fixed support portion 431 supporting the platform top plate 41 . Providing a fixed support device 43 is beneficial to reducing installation costs and improving the support stability of the platform top plate 4 .

The fixed support device 43 includes a plurality of fixed support parts 431 respectively provided at both ends of the platform top plate 41 . This arrangement is suitable for the moving parts that reciprocate between the two ends of the platform top plate 41, which is beneficial to reducing the installation cost and improving the support stability of the platform top plate 4.

An embodiment of the present disclosure also provides a radiation inspection device, including a bottom detection arm and the aforementioned support platform, and the moving component includes the bottom detection arm.

When the support platform is used in radiation inspection equipment, it can stably support the inspected object on the platform top plate 41 of the support platform, allowing the bottom detection arm to move under the platform top plate 41, which is conducive to achieving top-view scanning in mobile radiation inspection equipment. The device is conducive to ensuring that the detection image of the top viewing angle of the object to be inspected is not or less affected by changes in the supporting components of the object to be inspected at different parts, and improves the quality of the inspection image.

The support platform and its application of the embodiment of the present disclosure will be described in detail below with reference to FIGS. 1 to 5 , taking radiation inspection equipment as an example.

1 to 2 illustrate a support platform according to an embodiment of the present disclosure. FIGS. 3 to 5 illustrate a radiation inspection device using the support platform shown in FIGS. 1 to 2 .

As shown in Figures 3 to 5, the radiation inspection equipment includes a fixed frame 1, a movable frame 2, a scanning device 3 and a support platform. The support platform includes a bottom platform 4, a sensor 6 and a controller 7.

The fixed rack 1 includes a fixed rack body 11 and a rail 12 provided on the top of the fixed rack body 11 . The movable frame 2 includes a movable frame body 21 and a traveling device 22 arranged on the movable frame body 21 . The movable frame 2 is configured to be carried on the fixed frame 1 by the walking device 22 and can reciprocate along the track 12 . The scanning device 3 includes a radiation source 31 and a detector 32 . The radiation source 31 and the detector 32 are arranged on the movable frame 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 frame body 11, the movable frame body 21 and the platform top plate 41 form the scanning channel P of the radiation inspection equipment.

When the radiation inspection equipment inspects an object to be inspected, such as a vehicle, the walking device 22 drives the movable frame body 21 to walk along the track 12, thereby carrying the scanning device 3 on the movable frame body 21 to move synchronously with the movable frame 2. Since the track 12 is set on the fixed frame 1 instead of running on the ground or on a track set on the ground, the walking device 22 can move on the track 12 as long as the fixed frame 1 is firmly set on the ground. It walks smoothly and is rarely affected by the flatness of the ground. Therefore, the movable frame 2 and the scanning device 3 on it can move smoothly relative to the fixed frame 1. This is beneficial to ensuring that the quality of the acquired image will not be degraded due to jitter produced by the scanning device 3 . On the other hand, it also helps reduce or eliminate the need for civil construction costs. Since the scanning device 3 follows the walking device 22 to reciprocate, the inspected object can be placed on the bottom platform 4 stationary for scanning inspection. The length of the fixed frame 1 only needs to be greater than the length of a single inspected object, and is fixed relative to the scanning device 3 , in terms of the way in which the movement of the inspected object is set up, it is beneficial to reduce the size and weight of the radiation inspection equipment.

As shown in FIGS. 3 and 4 , in some embodiments, the traveling device 22 includes a plurality of traveling wheels 221 and a traveling driving device 222 . The plurality of traveling wheels 221 include driving wheels that are drivingly connected to the traveling driving device 222 . The traveling drive device 222 is, for example, a rotating motor. A transmission device may also be provided between the traveling drive device 22 and the driving wheels, and the transmission device may include a reducer, for example. In order for the traveling device 22 to move smoothly, the traveling device may also include guide wheels that cooperate with the side of the track.

As shown in Figure 3, the track 12 is arranged along the left and right directions in the figure (corresponding to the front and rear directions in Figures 4 and 5), and the scanning channel P formed by the fixed frame body 11, the movable frame body 21 and the platform top plate 41 is also along the direction shown in Figure 3 left and right directions (corresponding to the front and rear directions in Figures 4 and 5).

Wherein, the fixed bracket is, for example, a frame structure, which may include a top beam, a top longitudinal beam, a bottom beam, a bottom longitudinal beam and a plurality of upright columns. In order to make the frame structure stronger, middle longitudinal beams, oblique beams and other structures can also be set at the top, bottom and transverse sides, and reinforcement structures such as reinforcing plates can also be set appropriately.

The term "vertical" in the embodiment of the present disclosure refers to the same horizontal direction as the extension direction of the track 12, and the term "horizontal" refers to the horizontal direction perpendicular to the "vertical"; the term "vertical" refers to the same horizontal direction as the extension direction of the track 12. , refers to the vertical direction.

In order to prevent radiation leakage, shielding structures can also be installed at appropriate locations of the frame structure, such as on both sides of the frame.

As shown in FIGS. 3 to 5 , the movable frame body 21 includes a top beam 211 , a vertical arm 212 and a bottom beam 213 . The traveling device 22 is installed 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 the two ends of the bottom beam 213 are respectively connected to the bottom ends of the two vertical arms 212 . This arrangement makes the movable frame body 21 form a square frame as a whole, which is beneficial to the structural strength of the movable frame body 21 itself, thereby helping to reduce deformation and the relative position changes between the radiation source 31 and the detector 32 of the scanning device 3. This is beneficial to the stability and accuracy of image acquisition.

In the radiation inspection equipment 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 present disclosure is conducive to forming a top-view scanning unit and a side-view scanning unit, and the configuration of the scanning device 3 is relatively flexible.

As shown in FIG. 4 , the top-view scanning unit includes a top radiation unit 311 of the radiation source 31 and a bottom detection unit 321 of the detector 32 , and may also include a side detection unit 322 .

As shown in FIG. 5 , the side-view scanning unit 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 Figures 3 to 5, the top radiation unit 311 is provided on the top beam 211; the side radiation unit 312 is provided on the vertical arm 212; the side detection unit 322 is provided on the vertical arm 212; the bottom detection unit 321 Set on the bottom beam 213.

The side detection unit 322 is installed in the vertical arm 212 . The side detection unit 322 and the vertical arm 212 constitute a side detection arm.

The bottom detection unit 321 is installed in the bottom beam 213 . The bottom detection unit 321 and the bottom beam 213 form a bottom detection arm, which serves as a moving component and moves back and forth below the platform top plate 41 .

As shown in Figure 1, in some embodiments, the radiation inspection equipment may also include a ramp 5, which is provided at the end of the bottom platform 4. The height of the ramp 5 extends from the end of the bottom platform 4 to a distance away from the bottom platform 4. side gradually lowers. A ramp 5 is provided to facilitate the inspection object to move up and down the bottom platform 4. For example, it is beneficial to the upper and lower bottom platforms 4 of the vehicle, thereby improving the passing rate of the inspected objects and improving the inspection efficiency.

The ramp 5 and the bottom platform 4 may be separated, detachably connected or integrally provided.

As shown in Figures 1 and 2, in the radiation inspection equipment of the embodiment of the present disclosure, a bottom detection unit 321 is provided below the platform top plate 41. In order to minimize the impact of the bottom platform on image quality, the bottom platform 4 includes a movable Support device 42. The movable support device 42 includes a plurality of movable support parts 421 and a driving part 422 provided corresponding to the plurality of movable support parts 421 . The driving part 422 is configured to drive the corresponding movable support part 421 to switch between the support state and the avoidance state. In the supporting state, the movable support portion 421 is in contact with the bottom surface of the platform top plate 41 , so that the movable support portion 421 supports the platform top plate 41 . In the avoidance state, the movable support part 421 is separated from the bottom surface of the platform top plate 41 , so that the movable support part 421 has no supporting effect on the platform top plate 41 temporarily. In the avoidance state, in order for the bottom detection arm to pass smoothly between each movable support part 421 and the platform top plate 41, the distance between each movable support part 421 and the platform top plate 41 is larger than the distance between the bottom beam 213 and the bottom detection unit 321 thereon. height (the height of the bottom detection arm), so that the distance between the movable support part 421 and the platform top plate 41 is configured to allow the bottom of the movable frame body 21 to pass between the platform top plate 41 and the movable support device 42 in the avoidance state .

In some embodiments, as shown in FIG. 2 , in order to realize automatic switching of the working states of the multiple movable support parts 421 , the radiation inspection equipment further includes a sensor 6 and a controller 7 . The sensor 6 is configured to detect position information of the bottom detection arm. The controller 7 is connected with the sensor 6 and the driving part 422 via signals, and is configured to operate the driving part 422 according to the position information detected by the sensor 6 to drive the movable support part 421 to switch between the support state and the avoidance state.

The controller 7 can be implemented as a general processor, a programmable logic controller (PLC), a digital signal processor (DSP), or an application-specific integrated circuit for performing the functions described in this disclosure. (Application Specific Integrated Circuit, ASIC for short), Field-Programmable Gate Array (FPGA for short) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any appropriate combination thereof.

The movable support part 421 includes, for example, a telescopic cylinder, a nut and screw assembly, a cam ejector assembly, a cam or connecting rod structure, etc.; the driving part 422 includes an electric motor or a hydraulic motor, etc. In addition, a transmission device may be appropriately provided between the driving part and the supporting part. The transmission device can realize functions such as speed change, reversal, synchronization, etc., such as gear transmission device, gear rack transmission device, worm gear transmission device, etc.

By controlling the working state of each movable support device 42 to be in a support state or an avoidance state, it is conducive to realizing an obstacle-free position of the bottom detection unit 321 on the basis of a thinner platform top plate 41 and no or less reinforcement structures. Move and inspect to facilitate clearer top-view scanning images with lower power top radiating units.

Each radiation unit of the aforementioned radiation source may include, for example, an accelerator, an X-ray machine, an isotope emitting device, etc. Each detection unit of the aforementioned detector may include, for example, a gas detector, a semiconductor detector, a scintillation detector, etc.

In some embodiments, as shown in FIG. 1 , the bottom platform 4 also includes a fixed support device 43 . The fixed support device 43 includes a plurality of fixed support parts 431 respectively supported at both ends of the platform top plate 41 . The bottom of the movable frame body 21 Located between the plurality of fixed support portions 431 at both ends of the platform top plate 41 .

The fixed support device 43 is provided to facilitate the platform top plate 41 to be firmly installed and positioned accurately, and to ensure stable placement of the inspected object.

The following describes the working principle of the support platform according to an embodiment of the present disclosure with reference to FIGS. 1 and 2 . In FIG. 1 , in order to illustrate the working principle, the movable support device 42 only shows the telescopic movable support part 421 , and the remaining parts are not shown. The location where the movable frame body 21 interferes with the movable support device 42 involves the bottom beam 213 of the movable frame body 21 .

In FIG. 1 , the working state switching process of the movable support part 421 related to the beginning of a stroke of the movable frame body 21 from the right to the left is shown from top to bottom. FIG. 2 shows a control block diagram for controlling the operation of the movable support part 421. The movable support part 421 is a telescopic rod. When it extends upward, it is in a supporting state in contact with the lower surface of the platform top plate 41. When it retracts downward, it is separated from the lower surface of the platform top plate 41 to avoid the movable machine. The avoidance state of the frame body 21.

First, the movable frame body 21 begins to move to the right. The sensor 6 sends the detected position information of the bottom beam 213 to the controller 7. The controller 7 moves the position information to the movable support part on the left side of the movable frame body 21 based on the position information. 421 drives the connected driving part 422 to issue a command, and the driving part 422 moves, driving the movable support part 421 to shrink downward and gradually away from the bottom surface of the platform top plate 41, so that sufficient movement of the frame body 21 is formed between the movable support part 421 and the platform top plate 41 The bottom beams 213 are in the avoidance state through the intervals, and at the same time, the support portions 422 at other positions maintain their support state to ensure that the platform top plate 41 has sufficient support. Then the bottom beam 213 of the movable frame body 21 passes through this gap. After the controller 7 determines that the bottom beam 213 has passed the movable support part 421 according to the position information of the sensor 6, it controls the driving part 422 to drive the movable support part 421 to extend upward until it returns to the support state. Then the controller 7 drives the driving part 422 corresponding to the next movable support part 421 to switch the next movable support part 421 to the avoidance state. After the bottom beam 213 passes, the next movable support part 421 extends upward and returns to the support state. state, and so on, until the movable rack body 21 moves to the leftmost end of the bottom platform 4, and a scan is completed. Therefore, the movable frame body 21 can move from the right to the left without hindrance on the basis that the movable support device 42 and the fixed support device 43 integrally stably support the platform top plate 41 .

In the same way, the movable frame body 21 can move from the left to the right without hindrance on the basis that the movable support device 42 and the fixed support device 43 integrally stably support the platform top 41 .

During the movement of the movable frame body 21, the structure between the object to be measured and the bottom detection unit 321 is always consistent, which is always the platform top plate 41. Therefore, the platform top plate 41 and the bottom beam 213 have an impact on the inspection image from the top perspective. Therefore, the image quality obtained from the top perspective is higher and no additional images are produced, which is beneficial to speeding up image recognition.

In some examples, the bottom platform 4 is fixedly connected to the fixed frame body 11 . This setting is conducive to the overall stability of the radiation inspection equipment on the one hand, and is also conducive to the consistency of the relative positions of the scanning device, the platform top plate and the inspected object, thereby conducive to obtaining high-quality scan images. In addition, the requirements on the ground can be further reduced, which facilitates the rapid deployment of radiation inspection equipment. Among them, the bottom platform 4 and the fixed frame body 11 can be detachably fixedly connected, or can be provided integrally.

When the radiation inspection equipment of the embodiment of the present disclosure performs inspection, the inspected objects, such as vehicles, containers, etc., can be parked on the bottom platform 4 through the ramp 5 and located in the scanning channel P. Driven by the walking device 22, the scanning device 3. The movable frame 2 can walk along the track 12 in the direction of the arrow in Figure 3. During the walking process, the radiation source 31 emits scanning rays, and the detector 32 detects the rays transmitted and/or scattered by the object to be inspected, thereby completing the detection of the object to be inspected. Scan and use the image generator to generate the scanned image.

Figure 6 is a schematic diagram of the working principle of the bottom platform of the support platform and its movable support device according to another embodiment of the present disclosure. The difference between the bottom platform and its movable support device in the embodiment shown in Figure 6 and the bottom platform and its movable support device shown in Figures 1 to 2 is that the movable support part 421 is rotatably arranged, and the movable support part 421 is The rotation movement realizes its switching between the support state and the avoidance state. In the embodiment shown in FIG. 6 , the movable support part 421 of the movable support device rotates around a horizontal rotation axis located at the bottom of the movable support part 421 in the supporting state.

The unexplained parts of the bottom platform and its movable support device of the embodiment shown in Figure 6 can be referred to the description of the previous embodiment.

Figure 7 is a schematic diagram of the working principle of the bottom platform of the support platform and its movable support device according to yet another embodiment of the present disclosure. The bottom platform and its movable support device in the embodiment shown in FIG. 7 are the same as the bottom platform and its movable support device shown in FIG. 6 in that its movable support part 421 is also rotatably arranged, and through the movable support part 421 The rotational movement realizes its switching between the support state and the avoidance state. What is different from the embodiment shown in Figure 6 is that in the embodiment shown in Figure 7, the movable support part 421 of the movable support device rotates around a horizontal rotation axis located in the middle of the up and down direction of the movable support part 421 in the support state. .

The unexplained parts of the bottom platform and its movable support device of the embodiment shown in Figure 7 can be referred to the description of the previous embodiment.

According to the description of the above embodiments, it can be known that in the support platform of the embodiment of the present disclosure, both ends of the platform top plate of the bottom platform are fixedly supported by a plurality of fixed support parts, and the middle part is supported by a plurality of movable support parts. The platform top plate serves as a load-bearing structure with direct contact between multiple support parts and the supported objects. Since the movable support part in the middle can switch between the support state and the avoidance state, the bottom detection arm can move back and forth under the platform top plate while moving under the platform top plate. It is not affected by the movable support part when supporting the object stably. The support platform has a simple structure and is flexible and convenient to use.

Since multiple movable support parts are provided, each movable support part can be switched between the support state and the avoidance state, which is conducive to the detection signal of the bottom detection unit being basically not affected by the bottom platform, which is conducive to forming a top-view scanning unit and conducive to improving the top view. Viewing angle to check image quality. As the bottom detection arm moves under the platform top plate, the platform top plate is always stably supported. Therefore, the platform top plate can be made of a relatively thin flat plate. Therefore, when the support platform is used in radiation inspection equipment, it is conducive to achieving high quality. imaging effect. Since the support platform is conducive to keeping the inspected object motionless during the radiation inspection process, while the scanning device moves, it is conducive to reducing the overall structural size of the radiation inspection equipment.

Finally, it should be noted that the above embodiments are only used 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 the preferred embodiments, those of ordinary skill in the art should understand that the present disclosure can still be modified Modifications to the disclosed specific embodiments or equivalent substitutions of some of the technical features shall be covered by the scope of the technical solution claimed in this disclosure.

Claims (7)

1. A radiation inspection equipment, characterized in that it includes: The movable frame body (21) includes a top beam (211) and a bottom beam (213); The top radiating unit (311) is provided on the top beam (211); A bottom detection unit (321) disposed on the bottom beam (213), the top radiation unit (311) and the bottom detection unit (321) are configured to form a top-view scanning unit; and The support platform includes a bottom platform (4), which includes: The platform top plate (41) is used to carry the object to be measured. The bottom detection unit (321) and the bottom beam (213) constitute a bottom detection arm. The bottom detection arm moves reciprocally under the platform top plate (41). ; A movable support device (42), used to support the platform top plate (41), includes a plurality of movable support parts (421) and a driving part (422) provided corresponding to the plurality of movable support parts (421). The driving part (422) is configured to drive the corresponding movable support part (421) to switch between a support state and an avoidance state. In the support state, the movable support part (421) is in contact with the platform top plate (41). ) are in contact with each other, and in the avoidance state, the movable support portion (421) is separated from the bottom surface of the platform top plate (41), and each of the movable support portions (421) of the movable support device (42) Switching between the support state and the avoidance state individually or in groups allows the bottom detection arm to move from the support state to the avoidance state when the platform top plate (41) is supported by the movable support portion (421) in the support state. Pass between the platform top plate (41) and the movable support part (421) in the avoidance state, so that the measured object is connected to the bottom during the movement of the movable frame body (21) The structure between detection units (321) is always consistent. 2. Radiation inspection equipment according to claim 1, characterized in that, Each of the movable support parts (421) is drivingly connected to the same driving part (422); or Each of the movable support parts (421) is divided into multiple movable support groups, and each of the movable support groups is provided with one driving part (422); or Each of the movable support parts (421) is provided with one driving part (422). 3. The radiation inspection equipment according to claim 1, characterized in that the support platform further includes: A sensor (6) configured to detect position information of the bottom detection arm; and The controller (7) is signally connected to the sensor (6) and the driving part (422), and is configured to control the driving part (422) to operate according to the position information detected by the sensor (6). The movable support part (421) is driven to switch between the support state and the avoidance state. 4. The radiation inspection equipment according to claim 1, characterized in that the movable support part (421) is telescopically arranged and/or the movable support part is rotatably arranged to be in the support state and the Switch between avoidance states. 5. The radiation inspection equipment according to claim 1, characterized in that, The movable support part (421) includes a telescopic cylinder, a nut and screw assembly, a cam ejector assembly, a cam or a connecting rod structure; and/or The driving part includes an electric motor or a hydraulic motor. 6. The radiation inspection equipment according to any one of claims 1 to 5, characterized in that the bottom platform (4) further includes a fixed support device (43), the fixed support device (43) includes a support At least one fixed support part (431) of the platform top plate (41). 7. The radiation inspection equipment according to claim 6, characterized in that the fixed support device (43) includes a plurality of fixed support parts (431) respectively provided at both ends of the platform top plate (41).