Human body scanning device

Abstract

A human body scanning device, comprising a supporting column (200) and an imaging assembly. The imaging assembly can move up and down along the supporting column (200) so as to scan a human body. The imaging assembly comprises an arm frame (300), a ray source (301) located at a first end portion (306) of the arm frame (300), and a detector located at a second end portion (305) of the arm frame (300). The human body scanning device further comprises an energy absorbing structure; the energy absorbing structure comprises an energy absorbing portion and a flexible member (410); one end of the flexible member (410) is fixedly connected to the second end portion (305) of the arm frame (300); and the energy absorbing portion enables the flexible member (410) to apply a tensile force to the second end portion (305) of the arm frame (300) so as to prevent the second end portion (305) of the arm frame (300) from vibrating.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to Chinese Patent Application No. 202311797685.2 filed on December 25, 2023, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0002] The present disclosure relates to the field of detection technology, and in particular, to a human body scanning device. BACKGROUND

[0003] In the related art, human security inspection systems based on radiographic imaging are mainly implemented in two ways. In a first approach, an X-ray source and a detector remain stationary, and a person under inspection is conveyed through an X-ray beam by a conveying apparatus to complete scanning. Examples of a conveying mechanism for conveying a person under inspection mainly include a belt conveying mechanism, a rail-guided footboard conveying mechanism, and the like.

[0004] In another approach, a person under inspection remains stationary while the radiation source and the detector move relative to the person to complete scanning. A motion mechanism for an imaging mechanism mainly adopts a lead-screw transmission, a belt transmission, or a C-arm with endless recirculation of a steel belt or wire rope.

[0005] In the related art, the lead-screw transmission may involve problems of noise and speed limitation. The belt transmission may solve the noise problem but may have a risk of elongation during long-term operation, thereby increasing maintenance frequency. The steel belt or wire rope arranged in endless recirculation may also have a risk of circumferential elongation, resulting in uneven forces applied to opposite sides of the radiation source and the detector. Over time, this may lead to excessive travel errors and misalignment between the radiation source and the detector. SUMMARY

[0006] According to an aspect of the present disclosure, a human body scanning device is provided, including: a support column; and an imaging assembly supported by the support column and configured to image a human body; where the imaging assembly is movable up and down along the support column to scan the human body; and where the imaging assembly includes an arm frame, a radiation source disposed at a first end portion of the arm frame, and a detector disposed at a second end portion of the arm frame, the first end portion of the arm frame and the second end portion of the arm frame are opposite to each other such that the radiation source emits a radiation beam toward the detector, and the radiation source and the detector define an inspection space; where the human body scanning device further includes an energy absorption structure, the energy absorption structure includes an energy absorption portion and a flexible member led from the energy absorption portion, one end of the flexible member is fixedly connected to the second end portion of the arm frame such that the flexible member is retracted or released through the energy absorption portion to allow the flexible member to move together with the second end portion of the arm frame, and where the energy absorption portion causes the flexible member to apply a tensile force to the second end portion of the arm frame so as to prevent vibration of the second end portion of the arm frame.

[0007] In an embodiment, the energy absorption portion includes a first energy absorption portion and a second energy absorption portion, the first energy absorption portion and the second energy absorption portion are connected to the second end portion of the arm frame from opposite sides of the arm frame through a first flexible member and a second flexible member, respectively, so as to apply respective tensile forces to the second end portion of the arm frame to prevent vibration of the second end portion of the arm frame.

[0008] In an embodiment, the human body scanning device further includes: an imaging guide rail disposed on one side of the support column, where the first end portion of the imaging assembly is slidable on the imaging guide rail through a sliding mechanism.

[0009] In an embodiment, the human body scanning device further includes: a pulley support assembly, including: a support pulley disposed at a top of the support column; a counterweight cable extending around the support pulley; and a counterweight connected to the counterweight cable; where one end of the counterweight cable is connected to the imaging assembly, and the other end of the counterweight cable is connected to the counterweight, such that the imaging assembly descends when the counterweight rises, or the imaging assembly rises when the counterweight descends.

[0010] In an embodiment, the support pulley includes: a first support pulley disposed at the top of the support column; and a second support pulley disposed at a bottom of the support column, where the counterweight cable extends around the first support pulley and the second support pulley such that one end of the counterweight cable is connected to the imaging assembly and the other end is connected to the counterweight; where the pulley support assembly further includes a support cantilever, the first support pulley and the second support pulley are supported by the support cantilever, and the support cantilever is disposed at the top of the support column and extends toward the first end portion of the arm frame.

[0011] In an embodiment, the human body scanning device further includes: a counterweight guide rail, where the counterweight is movable along the counterweight guide rail through a counterweight sliding mechanism.

[0012] In an embodiment, the human body scanning device further includes: a drive assembly, including: a first drive pulley disposed at the top of the support column; a second drive pulley disposed at the bottom of the support column; a toothed conveyor belt extending around the first drive pulley and the second drive pulley; and a motor configured to drive the first drive pulley or the second drive pulley; where the imaging assembly is connected to the toothed conveyor belt so as to be driven by the toothed conveyor belt to move up and down.

[0013] In an embodiment, the human body scanning device further includes: an elastic tensioning apparatus, where a movable end of the elastic tensioning apparatus abuts against the toothed conveyor belt so as to tension the toothed conveyor belt while allowing movement of the toothed conveyor belt.

[0014] In an embodiment, the human body scanning device further includes: a base, where the support column is mounted on the base.

[0015] In an embodiment, the base includes a footing support member configured to statically support the base.

[0016] In an embodiment, the base includes a caster configured to be retractable into a bottom of the base and deployable to support the base at a height greater than a height at which the footing support member supports the base, so as to allow the human body scanning device supported by the base to move freely.

[0017] In an embodiment, the imaging assembly further includes a beam guiding box, and the beam guiding box is provided with a collimation mechanism configured to collimate radiation emitted by the radiation source into a desired radiation beam directed toward the detector.

[0018] In an embodiment, the motor is a servo motor.

[0019] In an embodiment, the arm frame has any one of a C-shape, a U-shape, an I- shape, an E-shape, a numeral-6 shape, or a laterally oriented inverted-U shape.

[0020] In an embodiment, the human body scanning device further includes an outer cover configured to accommodate the human body scanning device and provide a standing surface and an inspection space for a person.

[0021] In an embodiment, the arm frame further includes a transverse rod disposed between the first end portion and the second end portion of the imaging assembly and extending within a plane defined by the arm frame, and the transverse rod is connected to an end of the beam guiding box from which the radiation beam exits.

[0022] In an embodiment, the transverse rod is pivotable relative to the arm frame; and / or the transverse rod is reciprocally movable relative to the arm frame in a direction perpendicular to the plane defined by the arm frame.

[0023] It should be understood that the content described in this section is not intended to identify key or essential features of embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become readily apparent from the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are provided for better understanding of the present solution and do not constitute any limitations on the present disclosure, in which:

[0025] FIG. 1 shows a schematic perspective view of a human body scanning device according to an embodiment of the present disclosure;

[0026] FIG. 2 shows a schematic diagram of a main body portion of a human body scanning device according to an embodiment of the present disclosure, with an outer skin or outer cover removed;

[0027] FIG. 3 shows a schematic diagram of a base of a human body scanning device according to an embodiment of the present disclosure;

[0028] FIG. 4 shows a schematic diagram of a main body portion of a human body scanning device according to an embodiment of the present disclosure, with an outer skin or outer cover removed;

[0029] FIG. 5 shows a schematic diagram of an imaging assembly of a human body scanning device according to an embodiment of the present disclosure;

[0030] FIG. 6 shows schematic diagrams of four forms of an arm frame of a human body scanning device according to an embodiment of the present disclosure;

[0031] FIG. 7 shows a schematic diagram of an imaging assembly of a human body scanning device according to an embodiment of the present disclosure;

[0032] FIG. 8 shows a schematic diagram of an imaging assembly of a human body scanning device according to another embodiment of the present disclosure;

[0033] FIG. 9 shows a schematic diagram of a main body portion of a human body scanning device according to an embodiment of the present disclosure, with an outer skin or outer cover removed; and

[0034] FIG. 10 shows a schematic diagram of a main body portion of a human body scanning device according to an embodiment of the present disclosure, with an outer skin or outer cover removed. DETAILED DESCRIPTION OF EMBODIMENTS

[0035] To more clearly describe the objectives, technical solutions, and advantages of the present disclosure, embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the following description of embodiments is intended to explain and illustrate the general concept of the present disclosure and should not be construed as limiting the present disclosure. In the specification and the accompanying drawings, the same or similar reference numerals denote the same or similar components or members. For purposes of clarity, the drawings are not necessarily drawn to scale, and certain well-known components and structures may be omitted from the drawings.

[0036] Unless otherwise defined, technical or scientific terms used herein shall have the meanings commonly understood by a person having ordinary skill in the art to which the present disclosure pertains. Terms such as “first”, “second”, and similar expressions used herein do not indicate any order, quantity, or importance, but are merely used to distinguish among different components. Terms “a” and “an” do not exclude the presence of a plurality. Terms such as “comprising”, “including”, or similar expressions indicate that the element or item preceding the word encompasses the element or item listed thereafter as well as equivalents thereof, but does not exclude additional elements or items. Terms such as “connected”, “coupled”, or similar expressions are not limited to physical or mechanical connections and may include electrical connections, whether direct or indirect. Terms such as “upper”, “lower”, “left”, “right”, “top”, “bottom”, and the like are used only to indicate relative positional relationships, and such relative positional relationships may change when the absolute position of the described object changes. When an element such as a layer, film, region, or substrate is described as being disposed “on” or “under” another element, the element may be directly on or under the other element, or one or more intermediate elements may be present therebetween.

[0037] FIG. 1, FIG. 2, FIG. 4, FIG. 9 and FIG. 10 illustrate a human body scanning device according to embodiments of the present disclosure. FIG. 1 includes an outer skin or outer cover of the device, while in FIG. 2, FIG. 4, FIG. 9 and FIG. 10, the outer skin or outer cover is removed to show internal structures.

[0038] As shown in FIG. 2, the human body scanning device mainly includes a support column 200 and an imaging assembly. The imaging assembly is supported by the support column 200 and configured to image a human body. The imaging assembly is movable up and down along the support column 200 to scan a human body.

[0039] In embodiments of the present disclosure, the imaging assembly includes an arm frame 300. As shown in FIG. 5 to FIG. 8, the arm frame 300 may have any one of an I-shape (a of FIG. 6), an L-shape (b of FIG. 6), a C-shape (c of FIG. 6), a bracket-[ shape (d of FIG. 6), a U-shape, an E-shape (FIG. 8), or a numeral-6 shape (FIG. 7). It should be appreciated that the arm frame 300 may also have other shapes.

[0040] In an embodiment of the present disclosure, as shown in FIG. 5, the imaging assembly may include a radiation source 301 disposed at a first end portion 306 of the arm frame 300 and a detector disposed at a second end portion 305 of the arm frame 300 (the detector is not shown in FIG. 5 and is disposed within the second end portion 305). The first end portion 306 and the second end portion 305 are opposite to each other such that the radiation source 301 and the detector define an inspection space. In other words, the shape of the arm frame 300 allows radiation emitted by the radiation source 301 at the first end portion 306 to be received by the detector at the second end portion 305 of the arm frame 300. The first end portion 306 and the second end portion 305 are illustrated as portions having certain lengths in such embodiments, or may be regarded as respective sections or portions of the arm frame 300. For example, in a case of the arm frame 300 having a bracket-[ shape, the first end portion 306 and the second end portion 305 are connected by an intermediate portion (e.g., the portion indicated by reference numeral 304). Accordingly, the first end portion 306 and the second end portion 305 are end portions have certain lengths, rather than tips. It should be appreciated that the radiation beam emitted by the radiation source 301 may have a fan shape or other shapes covering a wide range. Therefore, even when the arm frame 300 has an I-shape, the radiation beam emitted by the radiation source 301 may still irradiate the detector to achieve imaging of the human body. In an embodiment, the radiation beam emitted by the radiation source 301 may have a cone shape, or may be a radially diverging radiation beam. The radiation source 301 may irradiate a desired portion of the human body at an appropriate height, such that inspection may be completed without movement of the radiation source 301.

[0041] In the human body scanning device of the present disclosure, as shown in FIG. 4 and FIG. 5, the imaging assembly includes a beam guiding box 302. The beam guiding box 302 is provided with a collimation mechanism 303 (shown as a slit in FIG. 5) configured to collimate the radiation emitted by the radiation source 301 into a desired radiation beam and to irradiate the detector. The radiation source 301 of the imaging assembly may be located close to the support column 200. A side of the first end portion 306 of the arm frame 300 of the imaging assembly adjacent to the support column 200 is connected to an imaging guide rail 202 provided on the support column 200. The imaging guide rail 202 may bear a lateral force applied by the imaging assembly so as to maintain the arm frame 300 in a horizontal or inclined state. The beam guiding box 302 is disposed on a side of the first end portion 306 of the arm frame 300 facing the detector at the second end portion 305 of the arm frame 300 of the imaging assembly. The radiation from the radiation source 301 exits through the beam guiding box 302, which shapes the radiation from the radiation source 301 into a radiation beam. The radiation beam may be a fan beam, a pencil beam, or the like. FIG. 5 schematically shows the beam guiding box 302 with a collimation mechanism 303 (schematically shown as an opening slit). The beam guiding box 302 may be integrated with the radiation source 301 (e.g., an X-ray source). The opening slit of the collimation mechanism 303 shown in FIG. 5 is adjustable to confine the radiation beam to a desired width, thereby ensuring that the radiation beam properly irradiates the detector.

[0042] In embodiments of the present disclosure, as shown in FIG. 7, the arm frame 300 may have a numeral-6 shape; as shown in FIG. 8, the arm frame 300 may have an E-shape. In the embodiments shown in FIG. 7 and FIG. 8, the arm frame 300 includes a transverse rod 307, and a portion of the beam guiding box 302 (the right side as shown in the drawings) is connected to the transverse rod 307, thereby providing a more stable orientation for the radiation beam exiting from the beam guiding box 302. Here, it may be considered that the transverse rod 307 is connected to an end of the beam guiding box 302 from which the radiation beam exits, or that an end face of the collimation mechanism 303 is connected to the transverse rod 307.

[0043] In an embodiment, the transverse rod 307 is adjustable so as to adjust the direction of the radiation beam exiting from the beam guiding box 302. For example, in the embodiment shown in FIG. 8, which is a schematic top view of the arm frame 300, the arm frame 300 is arranged horizontally. One end of the transverse rod 307 is connected to an intermediate portion of the arm frame 300 and is pivotable about the intermediate portion of the arm frame 300 (within a vertical plane), thereby allowing adjustment of a levelness of the opening of the collimation mechanism 303 of the beam guiding box 302. For example, as shown in FIG. 8, the arm frame 300 is provided with a transverse rod connecting portion 308. The transverse rod 307 is connected to the intermediate portion of the arm frame 300 through the transverse rod connecting portion 308. The transverse rod connecting portion 308 allows the transverse rod 307 to pivot about the transverse rod connecting portion 308. Alternatively, the transverse rod 307 may pivot about the arm frame 300 through the transverse rod connecting portion 308. In other words, the transverse rod connecting portion 308 may swing the transverse rod 307 so that the direction of the radiation beam exiting from the beam guiding box 302 may be adjusted through the transverse rod 307.

[0044] In another embodiment, the transverse rod connecting portion 308 is configured to move the transverse rod 307 upward and downward. Through upward and downward movement of the transverse rod 307, the end of the beam guiding box 302 from which the radiation beam exits is moved up and down, thereby adjusting the direction of the exiting radiation beam. In such embodiments, through the transverse rod connecting portion 308, the transverse rod 307 is reciprocally movable relative to the arm frame 300 in a direction perpendicular to a plane defined by the arm frame 300. In other words, in such embodiments, the transverse rod 307 may be moved up and down to finely adjust the end of the beam guiding box 302 from which the radiation beam exits, thereby aligning the radiation beam with the detector. It should be noted that the transverse rod 307 may be regarded as a part of the arm frame 300. Further, according to embodiments of the present disclosure, the transverse rod 307 is a movable transverse rod or an adjustable transverse rod. The transverse rod 307 of the present disclosure enables alignment of the radiation beam emitted by the beam guiding box 302 with the detector, and improves the stability of the beam guiding box 302. The transverse rod 307 is disposed between the first end portion 306 and the second end portion 305 of the imaging assembly, and the position of the transverse rod 307 may be selected according to a size of the beam guiding box 302. The various descriptions herein are intended merely to illustrate the position and arrangement of the transverse rod in the arm frame 300 and should not be construed as limiting the transverse rod 307 or the arm frame 300. In other embodiments of the present disclosure, such as those shown in FIG. 1 to FIG. 6 and FIG. 9 to FIG. 10, the transverse rod 307 described in this embodiment may likewise be provided. Those skilled in the art should appreciate that additional embodiments may be derived by combining the embodiments of the present disclosure according to the description herein.

[0045] FIG. 5 schematically shows an embodiment of the imaging assembly. In such embodiments, the imaging assembly includes an arm frame 300 having a laterally oriented inverted-U shape as shown. Opposite ends of the arm frame 300 face each other. The radiation source 301 is disposed at the first end portion 306 of the arm frame 300, and the detector is disposed at the second end portion 305 of the arm frame 300. The radiation beam emitted by the radiation source 301 at the first end portion 306 of the arm frame 300 is received by the detector at the second end portion 305 of the arm frame 300. The arm frame 300 provides enhanced torsional resistance with reduced size and weight, thereby reducing vibration of the detector. The detector may convert the radiation into electrical signals for, for example, an acquisition system of the human body scanning device.

[0046] In embodiments of the present disclosure, the arm frame 300 may have various shapes, as schematically illustrated in FIG. 6. The detector may be arranged along the arm frame 300, and thus the detector arrangement may have a shape similar to that of the arm frame 300, such as any one of a C-shape, a U-shape, an I-shape, an E-shape, a numeral-6 shape, or a laterally oriented inverted-U shape. Although the specific positions of the detector on the various forms of arm frames 300 shown in FIG. 6 are not illustrated, those skilled in the art may, according to the description of the present disclosure, arrange the detector on the various arm frames 300 shown in FIG. 6 as needed.

[0047] In an embodiment, the human body scanning device may include an energy absorption structure. For example, the energy absorption structure may include an energy absorption portion and a flexible member 410 led from the energy absorption portion, such as a flexible cord. One end of the flexible member 410 is fixedly connected to the second end portion 305 of the arm frame 300 such that the flexible member 410 may be retracted into or released from the energy absorption portion, thereby allowing the flexible member 410 to move together with the second end portion 305 of the arm frame 300. Meanwhile, the energy absorption portion causes the flexible member 410 to apply a tensile force to the second end portion 305 of the arm frame 300 so as to prevent vibration of the second end portion 305 of the arm frame 300. For example, a damping component or a power component may be disposed inside the energy absorption portion. The flexible member 410 may be released from the energy absorption portion while the energy absorption portion applies a force to the flexible member 410, so as to maintain the flexible member 410 in a retracted state to the energy absorption portion. As a result, the flexible member 410 continuously applies a tensile force on the second end portion 305 of the arm frame 300, thereby suppressing vibration or shaking of the second end portion 305. The energy absorption portion may be any mechanism or apparatus capable of performing the forgoing functions.

[0048] In an embodiment, as shown in FIG. 9 and FIG. 10, the energy absorption portion includes a first energy absorption portion 401 and a second energy absorption portion 402. The first energy absorption portion 401 and the second energy absorption portion 402 are connected to the second end portion 305 of the arm frame 300 from upper and lower sides of the arm frame 300 through a first flexible member 410 and a second flexible member 420, respectively, so as to apply respective tensile forces to the second end portion 305 of the arm frame 300 to suppress vibration of the second end portion 305 of the arm frame 300. For example, as shown in FIG. 9 and FIG. 10, the first energy absorption portion 401 and the second energy absorption portion 402 are respectively located above and below the second end portion 305 of the arm frame 300. It should be appreciated that the vertical positional relationship of the first energy absorption portion 401 and the second energy absorption portion 402 is not limited thereto. The first energy absorption portion 401 illustrated in the upper position may be fixed to any fixing frame or building ceiling, or other elevated locations. The second energy absorption portion 402 may be disposed on a frame or base at the bottom of the device, or at a location on the ground.

[0049] In an embodiment, the energy absorption portion may include a damping apparatus. The first energy absorption portion 401 is connected to the second end portion 305 of the arm frame 300 through the first flexible member 410, and the second energy absorption portion 402 is connected to the second end portion 305 of the arm frame 300 through the second flexible member 420. During upward and downward movement of the arm frame 300, the damping functions of the first energy absorption portion 401 and the second energy absorption portion 402 suppress vibration of the arm frame 300, thereby improving imaging stability and image clarity. A winding drum for the first flexible member 410 and a winding drum for the second flexible member 420 are respectively disposed within the first energy absorption portion 401 and the second energy absorption portion 402 to respectively store the first flexible member 410 and the second flexible member 420.

[0050] In other embodiments, the first energy absorption portion 401 and the second energy absorption portion 402 may be implemented as other apparatuses, such as including power apparatuses configured to apply small tensile forces to the second end portion 305 of the arm frame 300 through the first flexible member 410 and the second flexible member 420, respectively, while allowing the first flexible member 410 and the second flexible member 420 to move together with the second end portion 305 of the arm frame 300. A winding drum for the first flexible member 410 and a winding drum for the second flexible member 420 are respectively disposed within the first energy absorption portion 401 and the second energy absorption portion 402 to respectively store the first flexible member 410 and the second flexible member 420. In an embodiment, the first energy absorption portion 401 and the second energy absorption portion 402 may be provided with power sources configured to drive the respective winding drums to release the first flexible member 410 and the second flexible member 420 while simultaneously applying forces to the second end portion 305 of the arm frame 300. Although the internal structures of the first energy absorption portion 401 and the second energy absorption portion 402 are not illustrated in FIG. 9, it should be understood that the first energy absorption portion 401 and the second energy absorption portion 402 may be configured according to the description of the present disclosure.

[0051] In an embodiment, to achieve comprehensive scanning of the human body, the imaging assembly is designed to move along the support column 200, for example, move upward and downward. As shown in FIG. 4, in embodiments of the present disclosure, the human body scanning device may include an imaging guide rail 202 disposed on one side of the support column 200. The first end portion 306 of the imaging assembly may slide on the imaging guide rail 202 through an imaging sliding mechanism. The imaging sliding mechanism may include, for example, a pulley, a slider, or other conventional components, allowing the imaging assembly to slide stably along the imaging guide rail 202. The imaging guide rail 202 may be any guide rail available to those skilled in the art. Through the imaging sliding mechanism, the imaging assembly is supported by and movable along the imaging guide rail 202, thereby enabling smooth movement of the imaging assembly and allowing the imaging assembly to move up and down smoothly with a small driving force.

[0052] According to embodiments of the present disclosure, as shown in FIG. 4, the human body scanning device may include a pulley support assembly. The pulley support assembly includes: a support pulley 208-0 disposed at a top of the support column 200; a counterweight cable (not shown) extending around the support pulley 208-0; and a counterweight box 204. One end of the counterweight cable is connected to the first end portion 306 of the arm frame 300, and the other end is connected to the counterweight box 204, such that the weight of the imaging assembly may be balanced by the counterweight box 204.

[0053] According to embodiments of the present disclosure, as shown in FIG. 10, the human body scanning device may include a pulley support assembly. The pulley support assembly includes: a first support pulley 208-1 disposed at the top of the support column 200; a second support pulley 208-2 disposed at the top of the support column 200; a counterweight cable 205 extending around the first support pulley 208-1 and the second support pulley 2082; and a counterweight box 204. One end of the counterweight cable 205 is connected to the first end portion 306 of the arm frame 300, and the other end is connected to the counterweight box 204, such that the weight of the imaging assembly may be balanced by the counterweight box 204. Unlike the embodiment shown in FIG. 4, in this embodiment, the first support pulley 208-1 and the second support pulley 208-2, as well as a support cantilever 208, are disposed at the top of the support column 200. The first support pulley 208-1 and the second support pulley 208-2 are disposed at an end portion of the support cantilever 208 that extends forward (toward the first end portion 306 of the arm frame 300) as shown. Those skilled in the art may employ other types or forms of pulley support assemblies as needed.

[0054] By providing the counterweight box 204, the weight of the imaging assembly may be balanced by the counterweight through the counterweight cable 205. Thus, only a small driving force is required to move the imaging assembly up and down along the support column 200, rather than a force equal to or greater than the weight of the imaging assembly to lift the imaging assembly.

[0055] In an embodiment, as shown in FIG. 4, the human body scanning device may include a counterweight guide rail 203, and the counterweight box 204 is movable along the counterweight guide rail 203 through a counterweight sliding mechanism. By moving the counterweight box 204 along the counterweight guide rail 203, a movement trajectory of the counterweight box 204 is constrained, thereby preventing lateral movement or vibration of the counterweight box 204 that could otherwise increase a load on the counterweight cable 205. This reduces vibration of the counterweight box 204, improves stability of the counterweight box 204 during movement, and reduces the risk of vibration being transmitted from the counterweight box 204 to the imaging assembly.

[0056] In embodiments of the present disclosure, the human body scanning device may include a drive assembly. The drive assembly includes: a first drive pulley 206-1 disposed at the top of the support column 200; a second drive pulley 206-2 disposed at the bottom of the support column 200; a toothed conveyor belt 206 extending around the first drive pulley 2061 and the second drive pulley 206-2; and a motor 207 configured to drive the first drive pulley 206-1 or the second drive pulley 206-2. The imaging assembly is connected to the toothed conveyor belt 206 so as to be driven by the toothed conveyor belt 206 to move up and down. When the motor 207 drives the first drive pulley 206-1 or the second drive pulley 206-2, the toothed conveyor belt 206 is driven, such that the imaging assembly connected to the toothed conveyor belt 206 is driven to move.

[0057] The drive assembly provides a pulley set formed by the first drive pulley 206-1 and the second drive pulley 206-2, which is independent from a support pulley set formed by the first support pulley and the second support pulley. Meanwhile, the imaging assembly is connected to both the toothed conveyor belt 206 and the counterweight cable 205, such that the toothed conveyor belt 206 and the counterweight cable 205 move synchronously. The support pulley set supports the weight of the imaging assembly, and the counterweight balances the weight of the imaging assembly. Accordingly, the pulley set of the drive assembly needs to provide only a small driving force to move the imaging assembly up and down. In this case, the motor is a servo motor, and it is advantageous for the servo motor that only a small force is required.

[0058] In embodiments of the present disclosure, the human body scanning device may include an elastic tensioning apparatus 330. As shown in FIG. 9 and FIG. 10, a movable end 331 of the elastic tensioning apparatus 330 abuts against the toothed conveyor belt so as to tension the toothed conveyor belt while allowing the toothed conveyor belt to move. The movable end 331 of the elastic tensioning apparatus 330 may include a smooth surface, or may be provided with a gear meshing with the toothed conveyor belt, thereby allowing movement of the toothed conveyor belt while the movable end 331 presses against the toothed conveyor belt. The elastic tensioning apparatus 330 may itself be elastic, such that the movable end 331 is extendable and retractable to provide an elastic pressure to the toothed conveyor belt. For example, as shown in FIG. 9, the movable end 331 of the elastic tensioning apparatus 330 may extend and retract in a horizontal direction to apply a pushing force to the toothed conveyor belt. In another embodiment, the movable end 331 of the elastic tensioning apparatus 330 may rotate about one end of the elastic tensioning apparatus 330 (the end mounted on the support column 200), such that the movable end 331 may adjust the force applied to the toothed conveyor belt or maintain pressing against the toothed conveyor belt to keep the toothed conveyor belt in a tensioned state.

[0059] In embodiments of the present disclosure, as shown in FIG. 2 and FIG. 3, the human body scanning device may include a base 100, and the support column 200 is mounted on the base 100. Accordingly, the human body scanning device forms an integrated unit, with all components being disposed on the base 100. By moving the base 100, the human body scanning device may be moved as a whole. By providing the base 100, the human body scanning device may be used in various scenarios, such as muddy ground, grassland, airports, stations, and other sites. The base 100 may be stably placed at different sites to perform human body scanning inspections.

[0060] In embodiments of the present disclosure, the base 100 includes a footing support member 101 configured to statically support the base 100. The footing support member 101 allows the base 100 to be supported by a limited number of support points on the ground. Further, the footing support member 101 is height-adjustable, thereby enabling the base 100 to stably support a horizontal plane and overcoming possible unevenness of the ground. Four footing support members 101 may be provided. For example, in a case of a rectangular base 100, one footing support member 101 may be arranged at each of four corners. The four footing support members 101 may be adjusted individually, or a part of the four footing support members 101 may be adjusted independently, so as to raise or lower the horizontal height of a corresponding corner of the base 100 and finally achieve the stability of the base 100. For example, an upper surface of the base 100 may be adjusted to be horizontal. However, the upper surface of the base 100 is not required to be horizontal, and the base 100 only needs to remain stable to complete the human body scanning inspection.

[0061] In embodiments of the present disclosure, as shown in FIG. 3, the base 100 may include a caster 102 configured to be retractable into a bottom of the base 100 and deployable to support the base 100 at a height greater than a height at which the footing support member 101 supports the base 100, thereby allowing the human body scanning device supported by the base 100 to move freely. The caster 102 may be mounted on a lower surface of the base 100. The lower surface of the base 100 may include a recess 103. When the base 100 is statically placed on the ground, the caster 102 may be retracted into and accommodated within the recess 103. The caster 102 may be deployed from the recess 103, and the caster 102 may then support the base 100. For example, in a case of a rectangular base 100, recesses 103 may be respectively provided at the four corners of the rectangle, and casters 102 are respectively disposed in the recesses 103, for example, mounted in the recesses 103. When the casters 102 are deployed from the recesses 103, the casters 102 support the corners of the base 100. When a caster 102 supports a corner of the base 100, the footing support member 101 at that corner is suspended above the ground. Accordingly, the base 100 is supported by the casters 102, thereby allowing the base 100 to be moved by rolling of the casters 102.

[0062] Through the combined design of the footing support member 101 and the caster 102, the base 100 may stably support the human body scanning device to perform human body security inspection in a stationary manner, while allowing the human body scanning device to be moved freely, thereby significantly improving relocation and movement of the human body scanning device.

[0063] In embodiments of the present disclosure, the human body scanning device may include an outer cover 400 configured to accommodate the human body scanning device and provide a standing surface and an inspection space for a person. As shown in FIG. 1, the outer cover 400 covers the components of the human body scanning device, thereby protecting the imaging assembly, the base 100, the pulley support assembly, the drive assembly, and other components from external damage and corrosion. The outer cover 400 provides a complete appearance and facilitates movement. Further, the outer cover 400 provides a standing position for a person and facilitates human body inspection.

[0064] It should be understood that the various forms of processes shown above may be used, with steps reordered, added, or deleted. For example, the steps described herein may be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions provided by the present disclosure can be achieved, and no limitation is imposed herein.

[0065] In the technical solutions of the present disclosure, the collection, storage, use, processing, transmission, provision, disclosure, etc., of user personal information involved all comply with relevant laws and regulations and do not violate public order and good morals.

[0066] The foregoing specific embodiments are not intended to limit the scope of protection of the present disclosure. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made to the disclosed embodiments or examples according to design requirements and other factors. Any modification, equivalent substitution, and improvement within the spirit and principle of the present disclosure shall fall within the scope of protection of the present disclosure.

Claims

1. A human body scanning device, comprising:a support column; andan imaging assembly supported by the support column and configured to image a human body;wherein the imaging assembly is movable up and down along the support column to scan the human body;wherein the imaging assembly comprises an arm frame, a radiation source disposed at a first end portion of the arm frame, and a detector disposed at a second end portion of the arm frame, the first end portion of the arm frame and the second end portion of the arm frame are opposite to each other such that the radiation source emits a radiation beam toward the detector, and the radiation source and the detector define an inspection space; andwherein the human body scanning device further comprises an energy absorption structure, the energy absorption structure comprises an energy absorption portion and a flexible member led from the energy absorption portion, one end of the flexible member is fixedly connected to the second end portion of the arm frame such that the flexible member is retracted or released through the energy absorption portion to allow the flexible member to move together with the second end portion of the arm frame, and wherein the energy absorption portion causes the flexible member to apply a tensile force to the second end portion of the arm frame so as to prevent vibration of the second end portion of the arm frame.

2. The human body scanning device of claim 1, wherein the energy absorptionportion comprises a first energy absorption portion and a second energy absorption portion, the first energy absorption portion and the second energy absorption portion are connected to the second end portion of the arm frame from opposite sides of the arm frame through a first flexible member and a second flexible member, respectively, so as to apply respective tensile forces to the second end portion of the arm frame to prevent vibration of the second end portion of the arm frame.

3. The human body scanning device of claim 1, further comprising:an imaging guide rail disposed on one side of the support column, wherein the first end portion of the imaging assembly is slidable on the imaging guide rail through a slidingmechanism.

4. The human body scanning device of claim 3, further comprising:a pulley support assembly, comprising:a support pulley disposed at a top of the support column;a counterweight cable extending around the support pulley; anda counterweight connected to the counterweight cable;wherein one end of the counterweight cable is connected to the imaging assembly, and the other end of the counterweight cable is connected to the counterweight, such that the imaging assembly descends when the counterweight rises, or the imaging assembly rises when the counterweight descends.

5. The human body scanning device of claim 4, wherein the support pulleycomprises: a first support pulley disposed at the top of the support column; and a second support pulley disposed at a bottom of the support column, wherein the counterweight cable extends around the first support pulley and the second support pulley such that one end of the counterweight cable is connected to the imaging assembly and the other end is connected to the counterweight;wherein the pulley support assembly further comprises a support cantilever, the first support pulley and the second support pulley are supported by the support cantilever, and the support cantilever is disposed at the top of the support column and extends toward the first end portion of the arm frame.

6. The human body scanning device of claim 4, further comprising:a counterweight guide rail, wherein the counterweight is movable along the counterweight guide rail through a counterweight sliding mechanism.

7. The human body scanning device of claim 4, further comprising:a drive assembly, comprising:a first drive pulley disposed at the top of the support column;a second drive pulley disposed at a bottom of the support column;a toothed conveyor belt extending around the first drive pulley and the second drive pulley; anda motor configured to drive the first drive pulley or the second drivepulley;wherein the imaging assembly is connected to the toothed conveyor belt so as to be driven by the toothed conveyor belt to move up and down.

8. The human body scanning device of claim 7, further comprising:an elastic tensioning apparatus, wherein a movable end of the elastic tensioning apparatus abuts against the toothed conveyor belt so as to tension the toothed conveyor belt while allowing movement of the toothed conveyor belt.

9. The human body scanning device of claim 1, further comprising:a base, wherein the support column is mounted on the base.

10. The human body scanning device of claim 9, wherein the base comprises afooting support member configured to statically support the base.

11. The human body scanning device of claim 9, wherein the base comprises acaster configured to be retractable into a bottom of the base and deployable to support the base at a height greater than a height at which the footing support member supports the base, so as to allow the human body scanning device supported by the base to move freely.

12. The human body scanning device of claim 1, wherein the imaging assemblyfurther comprises a beam guiding box, and the beam guiding box is provided with a collimation mechanism configured to collimate radiation emitted by the radiation source into a desired radiation beam directed toward the detector.

13. The human body scanning device of claim 1, wherein the motor is a servo motor.

14. The human body scanning device of claim 1, wherein the arm frame has anyone of a C-shape, a U-shape, an I-shape, an E-shape, a numeral-6 shape, or a laterally oriented inverted-U shape.

15. The human body scanning device of claim 1, further comprising an outer coverconfigured to accommodate the human body scanning device and provide a standing surface and the inspection space for a person.

16. The human body scanning device of claim 12, wherein the arm frame furthercomprises a transverse rod disposed between the first end portion and the second end portion of the imaging assembly and extending within a plane defined by the arm frame, and the transverse rod is connected to an end of the beam guiding box from which the radiation beam exits.

17. The human body scanning device of claim 16, wherein the transverse rod ispivotable relative to the arm frame; and / orthe transverse rod is reciprocally movable relative to the arm frame in a direction perpendicular to the plane defined by the arm frame.

Images