Radiation source mechanism and static computed tomography apparatus

Abstract

The present application provides a kind of ray source mechanism, comprising: body, suitable for outputting ray;Pulling assembly, suitable for limiting the position of body relative to rack, and allow body to rotate around the first axis of pulling assembly between the closed position close to rack and the open position away from rack;And first support assembly, installed at the lower end of body, to support the lower end of body around the first axis smooth rotation relative to the first work surface located below the first support assembly;Wherein, a part of first support assembly has the disengagement state with the first work surface, and the contact state with the first work surface in the process that body is disengaged from closed position, to adjust the contact area of first support assembly and first work surface.The present application also provides a kind of computer tomography equipment, comprising rack, detector mechanism and ray source mechanism, and the ray source mechanism is configured to move between the closed position shielding detector mechanism and the open position opening detector mechanism.

Description

TECHNICAL FIELD

[0001] At least one embodiment of the present application relates to a static computed tomography device, and more particularly, to a radiation source mechanism and a static computed tomography device. BACKGROUND

[0002] The detector mechanism of a static computed tomography device (static CT) is usually arranged between the radiation source mechanism and the passage due to the arrangement of the light path. When the detector mechanism needs to be replaced and / or maintained, the radiation source mechanism cannot be directly contacted from the outside due to the obstruction of the radiation source mechanism, so the radiation source mechanism needs to be moved away, and then reset after the replacement and / or maintenance is completed.

[0003] At present, the radiation source mechanism used in the static computed tomography device is large in size and weight, and needs to be hoisted by a lifting device (such as a crane, a hoist, a gantry crane, etc.) when moving the radiation source mechanism, and multiple people need to cooperate to ensure the relative position of the radiation source mechanism and the detector mechanism to maintain the reset accuracy of the radiation source mechanism when resetting. SUMMARY

[0004] To solve the above and other aspects of at least one technical problem in the prior art, the present application provides a radiation source mechanism and a static computed tomography device, which can move the radiation source mechanism by pushing the radiation source mechanism to install, maintain or replace the detector mechanism covered by the radiation source mechanism.

[0005] To achieve the above-mentioned purpose, an embodiment of the present disclosure provides a radiation source mechanism suitable for being installed on a gantry of a computed tomography device, comprising: a body suitable for outputting radiation; a pulling assembly suitable for limiting the position of the body relative to the gantry and allowing the body to rotate around a first axis of the pulling assembly between a closed position close to the gantry and an open position away from the gantry; and a first supporting assembly installed at the lower end of the body to support the lower end of the body to rotate smoothly around the first axis relative to a first working surface located below the first supporting assembly; wherein a part of the first supporting assembly has a disengaged state disengaged from the first working surface and a contact state in contact with the first working surface during disengagement of the body from the closed position, to adjust the contact area of the first supporting assembly and the first working surface.

[0006] In an illustrative embodiment, the first supporting assembly is in the contact state, and the first supporting assembly and the first working surface form a rolling friction.

[0007] In an exemplary embodiment, the pulling assembly comprises a first connecting member mounted on the body, and a pivot portion pivotally arranged between the first connecting member and the rack to support the body to rotate between the closed position and the open position.

[0008] In an exemplary embodiment, the pulling assembly further comprises a first locking member adapted to limit the movement of the first connecting member relative to the rack when the pivot portion is in the closed position.

[0009] In an exemplary embodiment, the first connecting member is configured to comprise a block structure arranged on the body and adapted to be connected with the pulling assembly.

[0010] In an exemplary embodiment, the first connecting member is configured to comprise a frame structure, the first connecting member comprising a bottom plate mounted on the upper end of the body, a side plate orthogonal to the bottom plate and attached to the mounting surface of the rack by the first locking member, and a longitudinal plate orthogonal to both the bottom plate and the side plate and adapted to be connected with one end of the pivot portion.

[0011] In an exemplary embodiment, the first locking member comprises a first bolt detachably arranged between the side plate and the rack and adapted to keep the first connecting member in contact with the rack.

[0012] In an exemplary embodiment, the pivot portion comprises a first hinge seat arranged on the rack, and a pull rod, one end of the pull rod being pivotally arranged on the first hinge seat, and the other end of the pull rod being adapted to be connected with the first connecting member, wherein the axis of rotation of the pull rod about the first hinge seat defines the first axis.

[0013] In an exemplary embodiment, the pivot portion further comprises a second hinge seat mounted on the end surface of the first connecting member facing the pull rod, and the other end of the pull rod is pivotally mounted on the second hinge seat, so that the pull rod has the freedom to rotate about the second axis of the second hinge seat.

[0014] In an exemplary embodiment, the upper end surface of the first working surface is provided with at least one arc-shaped groove, the center of the arc of the arc-shaped groove being located on the first axis, the first supporting assembly comprising a plate-shaped member adapted to be arranged to support the body, at least a portion of the plate-shaped member being provided with a through hole at a position corresponding to each of the arc-shaped grooves, and an extension portion arranged at a position of the plate-shaped member corresponding to at least a portion of the through hole.

[0015] In an exemplary embodiment, the telescopic part comprises a universal ball disposed at an end of the telescopic part facing the first working surface, the universal ball being configured to move between a contact position in contact with the first working surface and a disengagement position disengaged from the first working surface; wherein, in the disengagement state of the first supporting assembly, the universal ball is located in the through hole in the disengagement position disengaged from the arc-shaped groove, and in the contact state of the first supporting assembly, at least a part of the universal ball extends out of the through hole to abut against the groove bottom of the arc-shaped groove and roll along the arc-shaped groove with the rotation of the body.

[0016] In an exemplary embodiment, the telescopic part further comprises a base disposed on the plate-shaped member, a screw rod sleeved in the base and threadedly engaged with the base, and a universal ball seat disposed at a lower end of the screw rod; wherein the universal ball is disposed in the universal ball seat.

[0017] In an exemplary embodiment, the first supporting assembly further comprises a second connecting member adapted to limit the body on the plate-shaped member.

[0018] In an exemplary embodiment, an end of the second connecting member facing the body protrudes from an upper end surface of the plate-shaped member and extends into the body to limit the body on the plate-shaped member.

[0019] In an exemplary embodiment, the first supporting assembly further comprises a second locking member detachably disposed between the plate-shaped member and the first working surface to limit the relative position of the plate-shaped member and the first working surface.

[0020] In an exemplary embodiment, the first working surface further comprises at least one auxiliary arc-shaped groove, the arc-shaped groove and the auxiliary arc-shaped groove having the same arc center, and the auxiliary arc-shaped groove having a larger radius than the arc-shaped groove.

[0021] In an exemplary embodiment, at least a part of the plate-shaped member corresponding to each of the auxiliary arc-shaped grooves is provided with a through hole, and a telescopic part is disposed at a position of the plate-shaped member corresponding to at least a part of the through hole.

[0022] In an exemplary embodiment, a second supporting assembly is further provided at a lower end surface of the plate-shaped member, and in a state where a part of the plate-shaped member is rotated to disengage from the first working surface, the second supporting assembly abuts between the plate-shaped member and a second working surface parallel to the first working surface to support the part of the plate-shaped member extending from the first working surface relative to the second working surface.

[0023] In an exemplary embodiment, the second support assembly includes a wheel-shaped member, which is abutted against the second work surface to support and guide the rotation of the plate-shaped member along the second work surface when a portion of the plate-shaped member is rotated to be disengaged from the first work surface.

[0024] In an exemplary embodiment, the second support assembly is detachably mounted on the lower end surface of the plate-shaped member.

[0025] In an exemplary embodiment, the second support assembly is retractably arranged on the lower end surface of the plate-shaped member and configured to move between a retracted position disengaged from the second work surface and an extended position abutted against the second work surface.

[0026] Embodiments of the present disclosure also provide a computed tomography apparatus comprising: a gantry defining a detection channel adapted to place a detected object therein; at least one detector mechanism including a plurality of detector arrays arranged on a side wall of the gantry; and at least one radiation source mechanism as claimed in any one of claims 1 to 10, at least one detector array being arranged between the radiation source mechanism and the gantry, respectively; wherein the radiation source mechanism is configured to move between a closed position shielding the detector mechanism and an open position opening the detector mechanism.

[0027] In an exemplary embodiment, an upper end of the gantry extends outwardly in a horizontal direction to form a first protruding portion, a lower end of the gantry forms a second protruding portion parallel to the first protruding portion, the detector mechanism is arranged between the first and second protruding portions, and a first work surface is formed on an upper side of the second protruding portion.

[0028] In an exemplary embodiment, two of the detector mechanisms are arranged outside two opposite side walls of the gantry, respectively, and two of the radiation source mechanisms are arranged outside the two detector mechanisms, respectively, and each of the detector mechanisms is adapted to receive radiation from the radiation source mechanism away from the detector mechanism and penetrating the detected object.

[0029] In an exemplary embodiment, the detector mechanism is adapted to receive scattered radiation scattered from the detected object based on the radiation from the radiation source mechanism.

[0030] According to the ray source mechanism and the static computer tomography device, the pulling assembly is adapted to connect the upper part of the body with the rack and to pull the body during the rotation of the body between the closed position and the open position, so as to prevent the body from falling. The first supporting assembly is arranged between the body and the first working surface. When the body is in the closed position, a part of the first supporting assembly is in a disengaged state of disengaging from the first working surface, so that the other at least part of the first supporting assembly is in surface contact with the first working surface, and the relative position between the body and the first working surface is maintained by the friction between the first supporting assembly, the body and the first working surface, so as to maintain the stability of the body. When the body is disengaged from the closed position and moves to the open position, a part of the first supporting assembly is in contact with the first working surface in line contact or point contact, so that the friction to be overcome when changing the position of the body relative to the first working surface is small. Therefore, the operator can move the body to the open position without using a lifting appliance, so that the detector mechanism is at least partially exposed outside the ray source mechanism, and the installation, maintenance or replacement can be performed. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a perspective view of a static computer tomography device according to an exemplary embodiment of the present application;

[0032] Figure 2 is a perspective view of a ray source mechanism according to an exemplary embodiment of the present application;

[0033] Figure 3 is Figure 2 is an enlarged view of part A shown in FIG. 4;

[0034] Figure 4 is Figure 2 is a partial enlarged view of a first supporting assembly part of the ray source mechanism of the exemplary embodiment shown in FIG. 4;

[0035] Figure 5 is Figure 4 is a partial sectional view of an extension part of the first supporting assembly of the exemplary embodiment shown in FIG. 4;

[0036] Figure 6 is Figure 2 is a perspective view of the ray source mechanism of the exemplary embodiment shown in FIG. 4 when the ray source mechanism is turned to the open state;

[0037] Figure 7 is Figure 2 is a schematic view of a second supporting assembly part of the ray source mechanism of the exemplary embodiment shown in FIG. 4; and

[0038] Figure 8is a perspective view of a static computed tomography apparatus according to an exemplary embodiment of the present application, wherein the radiation source mechanism is in an open state.

[0039] In the above drawings, the meaning of the reference numerals is as follows:

[0040] 1. a frame;

[0041] 11. a first protrusion;

[0042] 12. a second protrusion;

[0043] 13. a detection passage;

[0044] 2. a radiation source mechanism;

[0045] 21. a pulling assembly;

[0046] 211. a first hinge base;

[0047] 212. a pull rod;

[0048] 213. a second hinge base;

[0049] 214. a first connecting member;

[0050] 215. a first bolt;

[0051] 216. a second bolt;

[0052] 22. a body;

[0053] 23. a first supporting assembly;

[0054] 231. a plate-shaped member;

[0055] 232. an extension part;

[0056] 2321. a first screw;

[0057] 2322. a universal ball;

[0058] 2323. a base;

[0059] 2324. a screw rod;

[0060] 2325. a universal ball seat;

[0061] 233. an arc-shaped groove;

[0062] 234. a third screw;

[0063] 235. a second connecting member;

[0064] 236. an auxiliary arc-shaped groove;

[0065] 24. a second supporting assembly;

[0066] 241. A universal wheel; and

[0067] 3. A detector mechanism. DETAILED DESCRIPTION

[0068] In order to make the objectives, technical solutions, and advantages of the present application clearer, the present application will be described in further detail below with reference to specific embodiments and with reference to the drawings. The terms used herein are merely used to describe specific embodiments, and are not intended to limit the present application.

[0069] The terms "comprise", "contain", and the like herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components. All terms used herein, including technical and scientific terms, have meanings commonly understood by one of ordinary skill in the art, unless otherwise defined. It should be noted that the terms used herein should be interpreted as having meanings consistent with the context of the present specification, and should not be interpreted in an idealized or overly formal manner.

[0070] In this document, unless otherwise specifically stated, directional terms such as "upper", "lower", "left", "right", "inner", "outer" and the like are used with reference to the orientation or position shown in the drawings, and are used only to facilitate the description of the present application, and do not indicate or imply that the referred objects must have a particular orientation, be constructed or operated in a particular orientation. It should be understood that when the absolute position of the described object changes, the relative positional relationship they represent may also change accordingly. Therefore, these directional terms should not be understood as limiting the present application.

[0071] In the case of using expressions similar to "at least one of A, B, and C, etc.", it should be generally interpreted that the meaning of the expression is the same as that of "at least one of A or B; at least one of A or C; at least one of B or C; at least one of A, B, and C; etc." in terms of a logical interpretation of a set of the elements. In the case of using expressions similar to "at least one of A, B, or C, etc.", it should be generally interpreted that the meaning of the expression is the same as that of "at least one of A or B; at least one of A or C; at least one of B or C; at least one of A, B, and C; etc." in terms of a logical interpretation of a set of the elements.

[0072] According to one general inventive concept of the present disclosure, a radiation source mechanism and a static computed tomography apparatus are provided.

[0073] Figure 1is a perspective view of a static computed tomography apparatus according to an illustrative embodiment of the present invention.

[0074] As shown in Figure 1 According to an illustrative embodiment of the present disclosure, a static computed tomography apparatus is provided, which includes a gantry 1 on which a radiation source mechanism is mounted.

[0075] Figure 2 is a perspective view of a radiation source mechanism according to an illustrative embodiment of the present invention.

[0076] An illustrative embodiment of the present invention provides a radiation source mechanism 2, as shown in Figure 2 which includes a body 22, a pulling assembly 21, and a first support assembly 23. The body 22 is adapted to output radiation. The pulling assembly 21 is adapted to restrict the position of the body 22 relative to the gantry 1 and allow the body 22 to rotate about a first axis of the pulling assembly 21 between a closed position close to the gantry 1 and an open position away from the gantry 1. The first support assembly 23 is mounted at a lower end of the body 22 to support smooth rotation of the lower end of the body 22 about the first axis relative to a first working surface located below the first support assembly 23. A portion of the first support assembly 23 has a disengaged state disengaged from the first working surface and a contact state in contact with the first working surface during disengagement of the body 22 from the closed position, to adjust the contact area of the first support assembly 23 with the first working surface.

[0077] In an illustrative embodiment, the body 22 includes, but is not limited to, an X-ray source. It should be noted here that the body 22 is not the focus of protection of the present disclosure, and any radiation source suitable for a static computed tomography apparatus in the field can be selected for use, without being specifically expanded.

[0078] In an illustrative embodiment, the pulling assembly 21 is mounted between the body 22 and the gantry 1.

[0079] In detail, the pulling assembly 21 includes, but is not limited to, connection with at least one of the upper and side portions of the body 22.

[0080] In an illustrative embodiment, the pulling assembly 21 includes at least one pivot, with the axis of one of the pivots extending substantially in the vertical direction as the first axis.

[0081] In an illustrative embodiment, the first support assembly 23 is provided at the lower end surface of the gantry 1.

[0082] In detail, the first support assembly 23 at least partially coincides with the lower end surface of the gantry 1 in a projection in the vertical direction. It should be understood that embodiments of the present disclosure are not limited thereto.

[0083] For example, the first support assembly 23 is configured as a frame structure that surrounds the outer edge of the lower end surface of the body 22 to cover the lower end of the body 22.

[0084] In one exemplary embodiment, the first work surface includes, but is not limited to, any one of an end surface formed on the rack, a ground surface, and an end surface of a space in which the static computed tomography device is placed (e.g., a floor).

[0085] In another exemplary embodiment, the pulling assembly 21 is mounted on another frame (not shown in the figures) outside the body 22 and the rack 1.

[0086] In detail, a frame is provided outside the rack 1 and faces the body 22, and the pulling assembly 21 is arranged between the frame and the body 22.

[0087] Further, the frame includes, but is not limited to, any one of a door type, an arch type, a beam type, a girder type, and other structural frames suitable for connecting the pulling assembly 21.

[0088] In such an embodiment, the pulling assembly 21 is suitable for establishing a connection between the upper portion of the body 22 and the rack 1 and pulling the body 22 during rotation of the body 22 between the closed position and the open position to prevent the body from falling. The first support assembly 23 is arranged between the body 22 and the first work surface, and in the state that the body is in the closed position, a portion of the first support assembly is in a disengaged state that is disengaged from the first work surface, so that at least another portion of the first support assembly 23 is in surface contact with the first work surface to maintain the relative position of the body 22 and the first work surface by the frictional force between the first support assembly 23, the body 22, and the first work surface, which is beneficial to maintaining the stability of the body. In the state that the body 22 is disengaged from the closed position and moved to the open position, a portion of the first support assembly is in a contact state of line contact or point contact with the first work surface, so that the frictional force required to change the position of the body 22 relative to the first work surface is small. In this way, the operator can move the body to the open position without using a hoist, so that the detector mechanism is at least partially exposed outside the radiation source mechanism for installation, maintenance, or replacement.

[0089] According to the embodiment of the present disclosure, as shown in Figure 1 and Figure 2 the first support assembly 23 is in a contact state, and the first support assembly 23 forms rolling friction with the first work surface.

[0090] In such an embodiment, in the state that the body is separated from the closed position and moved to the open position, a portion of the first supporting assembly 23 is in a contact state with the first working surface to form a rolling friction between the first supporting assembly 23 and the first working surface, so that the operator can move the body 22 to the open position without using the lifting device, to expose the detector mechanism 3 at least partially outside the radiation source mechanism, for installation, maintenance or replacement.

[0091] Figure 3 is Figure 2 an enlarged view of the A portion (including the pulling assembly portion) shown in

[0092] According to an embodiment of the present disclosure, as shown in Figure 1 and Figure 2 the pulling assembly 21 comprises a first connecting member 214 and a pivoting portion. The first connecting member 214 is mounted on the body 22. The pivoting portion is pivotally arranged between the first connecting member 214 and the rack 1 to support the body to rotate between the closed position and the open position.

[0093] In an illustrative embodiment, the first connecting member 214 is arranged on the upper end surface of the body 22.

[0094] Further, the pivoting portion is arranged between the first connecting member 214 and the side wall of the rack 1.

[0095] In such an embodiment, mounting the first connecting member 214 on the upper end surface of the body 22 can make the side end surface of the body 22 facing the detector mechanism 3 not be blocked. The pivoting portion is suitable for connecting the first connecting member 214 to the rack 1 and providing the first connecting member 214 with the degree of freedom of rotation around the first axis.

[0096] According to an embodiment of the present disclosure, as shown in Figure 1 and Figure 2 the pulling assembly 21 further comprises a first locking member suitable for limiting the movement of the first connecting member 214 relative to the rack 1 in the state that the pivoting portion is in the closed position.

[0097] In an illustrative embodiment, the first locking member is arranged between the first connecting member 214 and the rack 1, and is suitable for fixing the first connecting member 214 to the rack 1, and is suitable for keeping the first connecting member 214 and the rack 1 in abutment with each other to limit the relative movement of the body 22 and the rack 1.

[0098] In another illustrative embodiment, the first locking member is arranged on the pivoting portion.

[0099] In detail, the first locking member is arranged on the pivot shaft of the pivoting portion, and the body is kept in the closed position by limiting the rotation of the pivot shaft.

[0100] Further, the axis of the pivot is defined as the first axis.

[0101] In a specific embodiment, the pivot is rotatably arranged in the hinge base, one end of the pivot is connected with the output shaft of the motor, the torque output by the motor drives the rotation of the pivot, and the rotation of the pivot is limited in the state that the motor is turned off.

[0102] Further, the outer side of the pivot is sleeved with a tubular member, a deep groove bearing is arranged between the tubular member and the pivot, the deep groove bearing is filled with magnetorheological grease, a coil is arranged in the tubular member, and in the state that the coil is electrified, the magnetorheological grease in the bearing forms a Bingham fluid, so that the inner ring and the outer ring of the bearing are in a locked state, and the rotation of the pivot relative to the tubular member is limited.

[0103] In such an embodiment, the first locking member is used to limit the relative position of the body 22 and the rack 1, so that the body 22 is kept in the closed position covering the detector mechanism 3.

[0104] According to an embodiment of the present disclosure, the first connecting member 214 is configured to include but is not limited to a block structure arranged on the body 22 and suitable for being connected with the pulling assembly 21.

[0105] In detail, the block structure includes but is not limited to a column mechanism configured to be a substantially cubic body, a cylindrical body, an elliptical cylindrical body and other polygonal bodies, so as to facilitate the effective and stable connection of the first connecting member 214 with the body 22.

[0106] According to an embodiment of the present disclosure, as shown in Figures 1 to 3 , the first connecting member 214 is configured to include but is not limited to a frame structure, and the first connecting member 214 includes a bottom plate, a side plate and a longitudinal plate. The bottom plate is arranged at the upper end of the body 22. The side plate is orthogonal to the bottom plate and is attached to the mounting surface of the rack 1 through the first locking member. The longitudinal plate is orthogonal to the bottom plate and the side plate and is suitable for being connected with one end of the pivoting part.

[0107] In an illustrative embodiment, the first connecting member 214 includes but is not limited to at least one bottom plate, at least one side plate and two longitudinal plates.

[0108] In detail, the bottom plate is configured to be the bottom surface of a cubic structure, and the side plate is arranged at the end of the bottom plate facing the rack 1. The longitudinal plates are respectively arranged at the left end and the right end of the side plate, as shown in Figure 3 .

[0109] Further, the bottom plate is fixed to the upper end surface of the body 22 through the second bolt 216.

[0110] Furthermore, the base plate, side plates, and longitudinal plates are connected by, but not limited to, any one of the following connection methods: welding, riveting, bolting, and integral molding. It should be understood that the embodiments of this disclosure are not limited thereto.

[0111] For example, the first connector 214 includes, but is not limited to, a keel structure and any other structure suitable for assembly with the body 22, which can simultaneously abut against a certain surface of the frame 1.

[0112] In this embodiment, the base plate is suitable for fixing to the body 22, the side plate is suitable for connecting to the frame 1 through the first locking member, and the longitudinal plate is disposed between the base plate and the side plate to enhance the structural strength of the first connecting member 214, which can effectively prevent the body 22 from overturning when connected to the frame 1.

[0113] According to embodiments of this disclosure, such as Figures 1 to 3 As shown, the first locking element includes, but is not limited to, the first bolt 215, which is detachably disposed between the side plate and the frame 1, and is suitable for holding the first connector 214 in contact with the frame 1.

[0114] In one illustrative embodiment, when the body is in the closed position, at least a portion of the frame 1 covered by the side plate is provided with screw holes, and a through hole is formed on the side plate at a position corresponding to the orthographic projection direction of the screw holes in the horizontal direction to accommodate the first bolt 215 passing through and being fixed to the frame 1.

[0115] In this implementation, when the first bolt 215 is engaged with the screw hole, the threaded engagement provides greater tensile strength to the body, thereby maintaining the stability of the body in the closed state.

[0116] In another illustrative embodiment, a groove (not shown) is provided on one of the frame 1 and the side plate, and an insert (not shown) corresponding to the shape and size of the groove is provided on the other of the frame 1 and the side plate. When the pivot is in the third position, the insert is fitted into the groove. A pin hole is provided at one end of the groove. A pin passes through the pin hole and is inserted into the insert along a line perpendicular to the extension direction of the groove, so as to keep the insert in the position within the groove.

[0117] In this implementation, the combination of slots, inserts, and pins can be used for quick connection between the frame 1 and the side plate.

[0118] According to embodiments of this disclosure, such as Figures 1 to 3 As shown, the pivot part includes a first hinge seat 211 and a pull rod 212. One end of the pull rod 212 (as shown) Figure 2 The left end (as shown) is pivotally mounted on the first hinge seat 211, and the other end of the pull rod 212 (as shown) is...Figure 2 The right end shown) is adapted to be connected with the first connecting piece 214; the axis around which the pull rod 212 rotates the first hinge base 211 defines the first axis.

[0119] According to embodiments of the present disclosure, as Figures 1 to 3 shown, the pivoting part further comprises a second hinge base 213 mounted on the end surface of the first connecting piece 214 facing the pull rod, and the other end of the pull rod 212 is pivotally mounted on the second hinge base 213, so that the pull rod 212 has the freedom to rotate around the second axis of the second hinge base 213.

[0120] In an illustrative embodiment, the second hinge base 213 is provided on the longitudinal plate.

[0121] In detail, the two ends of the pull rod 212 are respectively pivotally provided on the first hinge base 211 and the second hinge base 213.

[0122] In an illustrative embodiment, the first hinge base 211 and the second hinge base 213 are both configured to rotate around their respective hinge axes in the horizontal direction.

[0123] In detail, the axis of the hinge axis of the end of the first hinge base 211 connected with the pull rod 212 defines the first axis.

[0124] Further, the first axis is located outside the vertical projection of the body 22.

[0125] In such an embodiment, the first hinge base 211 and the installed hinge axis provide the body 22 with the freedom to rotate around the first axis.

[0126] In another illustrative embodiment, the first hinge base 211 and the second hinge base 213 are both configured to rotate around their respective hinge axes in the horizontal direction.

[0127] In detail, the axis of the hinge axis of the end of the second hinge base 213 connected with the pull rod 212 defines the second axis.

[0128] Further, the second axis is located inside the vertical projection of the body 22.

[0129] In such an embodiment, the second hinge base 213 and the installed hinge shaft provide the body 22 with a degree of freedom of rotation about the second axis. On one hand, the second hinge base 213 is adapted to compensate for the difference in fit due to machining precision and assembly error of the first hinge base 211, the pull rod 212 and the first connecting member 214, so that the pull rod 212 can rotate about the first hinge base 211 by the largest possible angle to meet the sufficient movement of the body 22 between the closed position and the open position; on the other hand, if a guide groove is provided between the first supporting assembly 23 and the first working surface, the body 22 can be rotated about the second hinge shaft in a state of being rotated about the first hinge shaft to a certain position to adjust the relative position of the body 22 and the rack 1 and / or the detector mechanism 3. It should be noted here that the cooperation relationship between the guide groove and the body 22 and / or the first supporting assembly 23 is not the protection point of the present disclosure, and any columnar slider capable of cooperating with the guide groove can be selected as appropriate, and will not be expanded in detail.

[0130] Figure 4 is a partial enlarged view of the first supporting assembly part of the ray source mechanism of the schematic embodiment shown in Figure 2 Figure 5 is a partial cross-sectional view of the telescopic part of the first supporting assembly of the schematic embodiment shown in Figure 4

[0131] According to the embodiment of the present disclosure, as shown in Figure 1 , Figure 2 , Figure 4 and Figure 5 , the upper end surface of the first working surface is provided with at least one arc-shaped groove, the center of the arc of the arc-shaped groove is located on the first axis, and the first supporting assembly 23 comprises a plate-shaped member 231 and a telescopic part 232. The plate-shaped member 231 is arranged in the horizontal direction, and the plate-shaped member 231 is adapted to support the body 22. At least a portion of the plate-shaped member 231 is provided with a through hole at a position corresponding to each arc-shaped groove. The telescopic part 232 is arranged at a position corresponding to at least a portion of the through hole of the plate-shaped member 231.

[0132] According to the embodiment of the present disclosure, as shown in Figure 5 , the telescopic part 232 comprises a universal ball 2322 arranged at the end of the telescopic part 232 facing the first working surface. The universal ball 2322 is configured to move between a contact position in contact with the first working surface and a disengagement position disengaged from the first working surface. In the disengaged state of the first supporting assembly 23, the universal ball 2322 is located in the through hole in the disengaged position disengaged from the arc-shaped groove. In the contact state of the first supporting assembly 23, at least a portion of the universal ball 2322 protrudes from the through hole to abut against the groove bottom of the arc-shaped groove, and the universal ball 2322 rolls along the arc-shaped groove with the rotation of the body.

[0133] ​​In an exemplary embodiment, the first working surface is provided with two arc-shaped grooves, but not limited to.

[0134] In detail, the two arc-shaped grooves are symmetrically arranged with the first axis projection in the vertical direction as the center.

[0135] Further, the projection of the through hole formed on the plate-shaped member 231 in the vertical direction is covered by the arc-shaped groove. It should be understood that the embodiments of the present disclosure are not limited thereto.

[0136] For example, the first working surface is provided with one, three, four, five, and any other number of arc-shaped grooves.

[0137] In an exemplary embodiment, the plate-shaped member 231 is provided with a plurality of expansion and contraction portions 232 greater than or equal to the number of arc-shaped grooves, so that in the state that each universal ball 2322 of each expansion and contraction portion 232 is in the contact position, at least one universal ball 2322 can be accommodated in each arc-shaped groove.

[0138] In such an implementation, the universal ball 2322 moves between the disengagement position away from the arc-shaped groove and the contact position abutting against the groove bottom of the arc-shaped groove under the action of the expansion and contraction portion 232. The extension direction of the arc-shaped groove defines at least a part of the translation direction of the ray source mechanism 2 to guide the movement of the ray source mechanism 2. In the state that the universal ball 2322 is in the disengagement position, the lower end surface of the plate-shaped member 231 is in surface contact with the first working surface. In the state that the body is subjected to pressure moving in the horizontal direction, sliding friction is formed between the plate-shaped member 231 and the working surface, which can more effectively maintain the stability of the ray source mechanism 2. In the state that the universal ball 2322 is in the contact position, point contact is formed between the universal ball and the arc-shaped groove, so that the body 22 and the first working surface form rolling friction, and in this state, the frictional force that needs to be overcome by the translation of the ray source mechanism 2 is smaller, and the operator does not need to cooperate with the hoist, and can manually push (including the operator applying pressure through the human body or applying pressure through mechanical equipment) the ray source mechanism 2 to translate.

[0139] According to the embodiments of the present disclosure, as Figure 5 shown, the expansion and contraction portion 232 includes a base 2323, a screw rod 2324, and a universal ball seat 2325. The base 2323 is arranged on the plate-shaped member 231. The screw rod 2324 is sleeved in the base 2323 and threadedly cooperates with the base 2323. The universal ball seat 2325 is arranged at the lower end of the screw rod 2324. The universal ball seat 2325 is provided with a universal ball 2322. It should be understood that the embodiments of the present disclosure are not limited thereto.

[0140] For example, the screw rod 2324 can be replaced by a mechanism including but not limited to a pneumatic cylinder, a lead screw, and other mechanisms with expansion and contraction functions.

[0141] In an exemplary embodiment, the base 2323 is fixed to the plate-shaped member 231.

[0142] In detail, the base 2323 is fixed to the plate-shaped member 231 by the first screw 2321.

[0143] Further, the universal ball seat 2325 (containing the universal ball 2322) is coaxially fixed to the lower end of the screw rod 2324 as shown in Figure 5 It should be understood that embodiments of the present disclosure are not limited thereto.

[0144] For example, the base 2323 can be fixed to the plate-shaped member 231 by any one of, but not limited to, bolting, riveting, welding.

[0145] In such an embodiment, the screw thread cooperation between the screw rod 2324 and the base 2323 can provide a greater torsion to push the universal ball 2322 out from below the through hole to abut against the arc-shaped groove.

[0146] According to an embodiment of the present disclosure, as shown in Figure 3 The first support assembly 23 further comprises a second connecting member 235, which is adapted to restrict the body 22 to the plate-shaped member 231.

[0147] According to an embodiment of the present disclosure, as shown in Figure 3 The end of the second connecting member 235 facing the body 22 is protruded from the upper end face of the plate-shaped member 231 and extends into the body 22 to restrict the body 22 to the plate-shaped member 231.

[0148] In an exemplary embodiment, the second connecting member 235 is configured to include, but not limited to, a cylindrical structure, one end of which is upwardly protruded from the lower end face of the plate-shaped member 231, and the other end of which extends radially outwardly to form a flange to abut against the end face of the plate-shaped member 231 facing the flange.

[0149] Further, the position of the lower end face of the body 22 facing the cylindrical structure protruding from the plate-shaped member 231 is provided with a receiving groove accommodating the cylindrical structure.

[0150] In such an embodiment, the second connecting member 235 is embedded with the body 22, which can effectively restrict the relative displacement of the body 22 and the plate-shaped member 231 in the horizontal direction to integrally fix the plate-shaped member 231 and the body 22.

[0151] In another illustrative embodiment, the second connecting member 235 further comprises a plurality of second screws, which are threaded upwardly from the lower end surface of the plate-shaped member 231 and arranged around the cylindrical structure to fix the second connecting member 235 with the plate-shaped member 231 and the body 22. It should be understood that the embodiments of the present disclosure are not limited thereto. For example, the body 22 can be fixed to the plate-shaped member 231 by welding, riveting, mortising or any other means.

[0152] According to an embodiment of the present disclosure, as shown in Figure 4 the first supporting assembly 23 further comprises a second locking member, which is detachably arranged between the plate-shaped member 231 and the first working surface to limit the relative position of the plate-shaped member 231 and the first working surface.

[0153] In an illustrative embodiment, the second locking member comprises but is not limited to a third screw 234.

[0154] In detail, the plate-shaped member 231 is provided with a through hole, and the first working surface is provided with a positioning hole corresponding to the position of the through hole. In the state that the through hole is aligned with the positioning hole, the third screw 234 can be threaded into the positioning hole to limit the relative position of the plate-shaped member 231 and the working surface.

[0155] Figure 6 is Figure 2 a perspective view of the illustrative embodiment of the ray source mechanism when it is turned to the open state.

[0156] According to an embodiment of the present disclosure, as shown in Figure 6 the first working surface is further provided with at least one auxiliary arc-shaped groove 236. The arc-shaped groove 233 and the auxiliary arc-shaped groove 236 have the same center of curvature, and the radius of the auxiliary arc-shaped groove 236 is greater than that of the arc-shaped groove 233.

[0157] According to an embodiment of the present disclosure, as shown in Figure 5 and Figure 6 At least a portion of the plate-shaped member 231 corresponding to each auxiliary arc-shaped groove is provided with a through hole. The telescopic part 232 is arranged at a position corresponding to at least a portion of the through hole of the plate-shaped member 231.

[0158] In an illustrative embodiment, the first working surface is provided with two arc-shaped grooves 233, including but not limited to.

[0159] In detail, the two arc-shaped grooves 233 are symmetrically arranged with the first axis in the vertical direction as the center to form a substantially annular structure.

[0160] Further, the first working surface is provided with one auxiliary arc-shaped groove 236, including but not limited to.

[0161] In an exemplary embodiment, the four corners of the plate-shaped member 231 are respectively provided with four retractable portions 232 including but not limited to, two retractable portions 232 whose universal ball 2322 are in contact with the bottom and / or the wall of the arc-shaped slot 233, and the other two retractable portions 232 whose universal ball 2322 are in contact with the bottom and / or the wall of the auxiliary arc-shaped slot 236.

[0162] In such an embodiment, the arc-shaped slot 233, the arc-shaped slot 236 and the plurality of retractable portions 232 are adapted to disperse the pressure applied by the body 22 to the plate-shaped member 231, so as to make the stress of the radiation source mechanism 2 uniform during the translation, i.e. to prevent the body 22 from overturning due to uneven stress, and to improve the smoothness of the body 22 during the translation.

[0163] According to an embodiment of the present disclosure, as shown in Figure 6 , the radiation source mechanism 2 further comprises a second supporting assembly 24 arranged at the lower end surface of the plate-shaped member 231, in a state where a part of the plate-shaped member 231 is rotated to be separated from the first working surface, the second supporting assembly 24 is arranged between the plate-shaped member 231 and a second working surface parallel to the first working surface, so as to support the part of the plate-shaped member 231 protruding from the first working surface relative to the second working surface.

[0164] In an exemplary embodiment, the first working surface is characterized as a plane formed by the upper end surface of the second protruding portion 12 of the bracket.

[0165] Further, the second working surface is characterized as a plane formed by the ground below the bracket.

[0166] In such an embodiment, the plate-shaped member 231 is rotated to a position as shown in Figure 5 , a part of the plate-shaped member 231 (e.g. the right end as shown in Figure 6 ) is separated from the first working surface and is in a state of hanging over the first working surface. The second supporting assembly 24 extends longitudinally, and the two ends of the second supporting assembly 24 are respectively arranged on the lower end surface of the plate-shaped member 231 and the second working surface, so as to support the plate-shaped member 231 and the body 22, which can effectively prevent the body 22 from overturning due to the center deviation caused by the plate-shaped member 231 hanging.

[0167] According to an embodiment of the present disclosure, as shown in Figure 6 , the second supporting mechanism comprises but is not limited to a wheel-shaped member, in a state where a part of the plate-shaped member 231 is rotated to be separated from the first working surface, the wheel-shaped member is arranged on the second working surface, so as to support the plate-shaped member 231 and guide the rotation of the plate-shaped member 231 along the second working surface.

[0168] In an exemplary embodiment, the wheel-shaped member comprises but is not limited to a universal wheel 241.

[0169] Specifically, the caster wheel 241 is disposed on the lower end surface of the plate-shaped member 231, so as to be at one end of the plate-shaped member 231 (e.g., Figure 6 The plate-shaped part 231 and the body 22 are supported when the right end (shown) is rotated to a state where it is detached from the first working surface.

[0170] This implementation can be applied to scenarios where the size of the frame 1 is limited. When the frame 1 cannot accommodate the plate-shaped component 231 rotating to its full stroke, the caster wheel 241 can support and guide the plate-shaped component 231 after it detaches from the first working surface. This improves the stability of the radiation source mechanism 2 and expands its application scenarios. It should be understood that the embodiments of this disclosure are not limited thereto.

[0171] For example, the second support mechanism may include pads, supports, and other structures that can fill the gap formed in the vertical direction between the first working surface and the second working surface.

[0172] According to embodiments of this disclosure, such as Figure 6 As shown, the second support assembly 24 is detachably disposed on the lower end face of the plate-shaped member 231.

[0173] In one illustrative embodiment, the plate-shaped component 231 is provided with a plurality of mounting holes. When the plate-shaped component 231 is moved to a position where the mounting holes are provided, and is disengaged from the first working surface, the operator can place the second support component 24 between the lower end face of the plate-shaped component 231 and the second working surface, and fix the second support component 24 in the mounting holes.

[0174] In this implementation, the second support assembly 24 offers high flexibility, allowing operators to select a suitable size and strength based on the actual usage scenario. Furthermore, the second support assembly 24 is widely adaptable. For example, in scenarios where the second working surface is relatively flat, the second support assembly 24 can utilize casters 241. Conversely, in scenarios where the second working surface has locally protruding uneven surfaces, the second support assembly 24 can employ support rods, pads, or other supports capable of supporting the body 22 using at least one of the plate-shaped components 231.

[0175] Figure 7 yes Figure 2 A schematic diagram of a second support component portion of a radiation source mechanism according to an illustrative embodiment.

[0176] According to embodiments of this disclosure, such as Figure 7 As shown, the second support assembly 24 is telescopically disposed on the lower end face of the plate-shaped member 231 and is configured to move between a retracted position away from the second working surface and an extended position abutting against the second working surface.

[0177] In one illustrative embodiment, the second support assembly 24 includes, but is not limited to, any one of a retractable air cylinder, an electric push rod, a screw rod, and other structures having retracting and jacking functions.

[0178] In detail, the plate-shaped member 231 and / or the gantry 1 is provided with a recess, and the second support assembly 24 is located in the recess in the retracted state and is extended out of the recess and supported between the plate-shaped member 231 and the second working surface in the extended state.

[0179] In another illustrative embodiment, the second support assembly 24 includes, but is not limited to, a retractable universal wheel 241.

[0180] In detail, the retracting mode of the universal wheel 241 includes, but is not limited to, retracting in the vertical direction, folding in the horizontal direction, and other universal wheels 241 and universal wheel frame mechanisms having retracting functions. It should be noted that the specific method of retracting the universal wheel 241 is not the focus of protection of the present disclosure, and any retractable universal wheel 241 known in the art can be selected and applied, and will not be expanded in detail.

[0181] Figure 8 is a perspective view of a static computed tomography apparatus according to an illustrative embodiment of the present disclosure, in which a radiation source mechanism is in an open position.

[0182] An illustrative embodiment of the present disclosure also provides a static computed tomography apparatus, as shown in Figure 1 and Figure 8 , including a gantry 1, at least one detector mechanism 3, and at least one radiation source mechanism 2. The gantry 1 defines a detection channel 13 suitable for placing a detected object. The detector mechanism 3 is arranged on the side wall of the gantry 1, and each detector mechanism 3 includes a plurality of detector arrays. The detector arrays 3 are arranged between the radiation source mechanism 2 and the gantry 1, respectively. The radiation source mechanism 2 is configured to move between a closed position in which the detector mechanism 3 is shielded and an open position in which the detector mechanism 3 is opened.

[0183] In such an embodiment, the radiation source mechanism 2 is pivotally arranged on the gantry 1, and in the open position, the radiation source mechanism 2 opens the detector mechanism 3 so that an operator can maintain and / or repair the detector mechanism 3. In the closed position, the radiation source mechanism 2 is reset to a position in which the detector mechanism 3 is shielded, so that the static computed tomography apparatus can perform tomographic scanning.

[0184] According to an embodiment of the present disclosure, as shown in Figure 8As shown, the upper end of the frame 1 extends outward in the horizontal direction to form a first protrusion 11, and the lower end of the frame 1 forms a second protrusion 12 parallel to the first protrusion 11. The detector mechanism 3 is disposed between the first protrusion 11 and the second protrusion 12, and the first working surface is formed on the upper side of the second protrusion 12.

[0185] In this embodiment, the X-ray source mechanism 2 is mounted on the frame 1 so that the X-ray source mechanism 2 and the detector mechanism 3 have a high degree of integration, which facilitates the overall installation, maintenance and transportation of the static computed tomography equipment.

[0186] According to embodiments of this disclosure, such as Figure 8 As shown, the static computed tomography (CT) scanner includes two detector mechanisms 3 respectively disposed on the outer sides of two opposite side walls of the frame 1, and two radiation source mechanisms 2 respectively disposed on the outer sides of the two detector mechanisms 3. Each detector mechanism 3 is adapted to receive radiation from the radiation source mechanism 2 located away from the detector mechanism 3 and to penetrate the target being detected.

[0187] In this embodiment, the detector mechanism 3 is adapted to receive rays that pass through the target being detected, output by the opposing ray source mechanism 2.

[0188] According to embodiments of this disclosure, such as Figure 8 As shown, the detector mechanism 3 is adapted to receive scattered rays from the target being detected based on rays from the detector mechanism 3.

[0189] In this embodiment, the pulling component 21 is disposed on the first protrusion 11, and the first support component 23 is disposed between the second protrusion 12 and the body 22. When the body is in the closed position, the first support component 23 is in the contact position, so that the first support component 23 forms sliding friction extending along the first working surface under the action of the body and its own weight, which helps to maintain the stability of the body in the closed position. When the body is disengaged from the closed position and moved to the open position, a portion of the first support component 23 is in contact with the first working surface, so that rolling friction is formed between the first support component 23 and the first working surface, allowing the operator to move the body 22 to the open position without using a lifting device, so that the detector mechanism 3 is at least partially exposed outside the radiation source mechanism for installation, maintenance, or replacement.

[0190] Those skilled in the art can understand that the features recited in various embodiments of the present disclosure and / or claims can be combined or / and integrated in several combinations, even if such combinations are not explicitly recited in the present disclosure. In particular, the features recited in various embodiments of the present disclosure and / or claims can be combined and / or integrated in several combinations without departing from the spirit and teachings of the present disclosure. All such combinations and / or integrations fall within the scope of the present disclosure.

[0191] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above description is only a specific embodiment of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A computed tomography apparatus, characterized by, The application relates to a radiation source mechanism (2) for a radiation detector, comprising: a body (22) adapted to output radiation; a pulling assembly (21) adapted to limit the position of the body (22) relative to a rack (1) and allow the body (22) to rotate around a first axis of the pulling assembly (21) between a closed position close to the rack (1) and an open position away from the rack (1); and a first supporting assembly (23) mounted at the lower end of the body (22) to support the lower end of the body (22) to smoothly rotate around the first axis relative to a first working surface below the first supporting assembly (23); a part of the first supporting assembly (23) has a disengaged state disengaged from the first working surface and a contact state in contact with the first working surface during the disengagement of the body (22) from the closed position to adjust the contact area of the first supporting assembly (23) and the first working surface; wherein the radiation source mechanism (2) is configured to move between a closed position shielding the detector mechanism (3) and an open position opening the detector mechanism (3). The first supporting assembly (23) is in the contact state, and the first supporting assembly (23) and the first working surface form rolling friction. The pulling assembly (21) comprises: a first connecting piece (214) mounted on the body (22); and a pivot part pivotably arranged between the first connecting piece (214) and the rack (1) to support the body to rotate between the closed position and the open position. The pulling assembly (21) further comprises a first locking piece adapted to limit the movement of the first connecting piece (214) relative to the rack (1) when the pivot part is in the closed position. The first connecting piece (214) is configured to comprise a block structure arranged on the body (22) and adapted to be connected with the pulling assembly (21). The first connecting piece (214) is configured to comprise a frame structure, and the first connecting piece (214) comprises: a bottom plate mounted on the upper end of the body (22); a side plate orthogonal to the bottom plate and attached to the mounting surface of the rack (1) through the first locking piece; and a longitudinal plate orthogonal to the bottom plate and the side plate and adapted to be connected with one end of the pivot part. The first locking piece comprises a first bolt detachably arranged between the side plate and the rack (1) and adapted to keep the first connecting piece (214) in contact with the rack (1). The pivot part comprises: a first hinge seat (211) arranged on the rack (1); and ​ ​ 2. The apparatus of claim 1, wherein, ​ 3. The apparatus of claim 1 or 2, wherein, ​ ​ ​ 4. The apparatus of claim 3, wherein, ​ 5. The apparatus of claim 4, wherein, ​ 6. The apparatus of claim 4, wherein, ​ ​ ​ ​ 7. The apparatus of claim 6, wherein, ​ 8. The apparatus of claim 3, wherein, ​ ​ a pull rod (212) having one end pivotally arranged on the first hinge base (211) and the other end adapted to be connected with the first connecting member (214); wherein the first axis is defined by the axis of rotation of the pull rod (212) around the first hinge base (211).

9. The apparatus of claim 8, wherein, The pivot part further comprises a second hinge base (213) mounted on the end face of the first connecting member (214) facing the pull rod, and the other end of the pull rod (212) is pivotally arranged on the second hinge base (213) so that the pull rod (212) has the freedom of rotation around the second axis of the second hinge base (213).

10. The apparatus of claim 1, wherein, The upper end face of the first working surface is provided with at least one arc-shaped groove, the center of the arc of the arc-shaped groove is located on the first axis, and the first supporting assembly (23) comprises: a plate-shaped member (231) adapted to arrange the supporting body (22), at least a part of the plate-shaped member (231) is provided with a through hole at a position corresponding to each arc-shaped groove; and a telescopic part (232) arranged at a position of the plate-shaped member (231) corresponding to at least a part of the through hole.

11. The apparatus of claim 10, wherein, The telescopic part (232) comprises a universal ball (2322) arranged at the end of the telescopic part (232) facing the first working surface, and the universal ball (2322) is configured to move between a contact position in contact with the first working surface and a disengagement position disengaged from the first working surface; wherein, when the first supporting assembly (23) is in the disengaged state, the universal ball (2322) is located in the through hole and in the disengaged position disengaged from the arc-shaped groove, and when the first supporting assembly (23) is in the contact state, at least a part of the universal ball (2322) is protruded from the through hole to abut against the groove bottom of the arc-shaped groove and roll along the arc-shaped groove with the rotation of the body.

12. The apparatus of claim 11, wherein, The telescopic part (232) further comprises: a base (2323) arranged on the plate-shaped member (231); a screw rod (2324) sleeved in the base (2323) and threadedly matched with the base (2323); and a universal ball seat (2325) arranged at the lower end of the screw rod (2324); wherein the universal ball (2322) is arranged in the universal ball seat (2325).

13. The apparatus of claim 10, wherein, The first supporting assembly (23) further comprises a second connecting member (235) adapted to limit the body (22) on the plate-shaped member (231).

14. The apparatus of claim 13, wherein, The end of the second connecting member (235) facing the body (22) is protruded from the upper end face of the plate-shaped member (231) and extends into the body (22) to limit the body (22) on the plate-shaped member (231).

15. The apparatus of claim 10, wherein, The first supporting assembly (23) further comprises a second locking member detachably arranged between the plate-shaped member (231) and the first working surface to limit the relative position of the plate-shaped member (231) and the first working surface.

16. The apparatus of any one of claims 10 to 15, wherein, The first working surface is further provided with at least one auxiliary arc-shaped groove (236), the arc-shaped groove (233) and the auxiliary arc-shaped groove (236) have the same arc center, and the radius of the auxiliary arc-shaped groove (236) is greater than the radius of the arc-shaped groove (233).

17. The apparatus of claim 16, wherein, At least a portion of the plate-shaped member (231) is provided with a through hole corresponding to each of the auxiliary arc-shaped grooves. The telescopic part (232) is arranged at a position of the plate-shaped member (231) corresponding to at least a portion of the through hole.

18. The apparatus of claim 10, wherein, The second supporting assembly (24) is arranged at the lower end surface of the plate-shaped member (231), and in the state that a portion of the plate-shaped member (231) is rotated to be separated from the first working surface, the second supporting assembly (24) is abutted between the plate-shaped member (231) and a second working surface parallel to the first working surface, so as to support the portion of the plate-shaped member (231) protruding from the first working surface relative to the second working surface.

19. The apparatus of claim 18, wherein, The second supporting assembly (24) comprises a wheel-shaped member, and in the state that a portion of the plate-shaped member (231) is rotated to be separated from the first working surface, the wheel-shaped member is abutted on the second working surface, so as to support the plate-shaped member (231) and guide the plate-shaped member (231) to rotate along the second working surface.

20. The apparatus of claim 18 or 19, wherein, The second supporting assembly (24) is detachably arranged at the lower end surface of the plate-shaped member (231).

21. The apparatus of claim 18 or 19, wherein, The second supporting assembly (24) is telescopically arranged at the lower end surface of the plate-shaped member (231) and is configured to move between a retracted position separated from the second working surface and an extended position abutted on the second working surface.

22. The apparatus of claim 21, wherein, The upper end of the rack (1) extends outward in the horizontal direction to form a first protruding part (11), the lower end of the rack (1) forms a second protruding part (12) parallel to the first protruding part (11), the detector mechanism (3) is arranged between the first protruding part (11) and the second protruding part (12), and the first working surface is formed on the upper side of the second protruding part (12).

23. The apparatus of claim 22, wherein, The rack (1) comprises two detector mechanisms (3) arranged respectively outside two opposite side walls of the rack (1), and two radiation source mechanisms (2) arranged respectively outside the two detector mechanisms (3), and each detector mechanism (3) is adapted to receive radiation penetrating the detected target from the radiation source mechanism (2) away from the detector mechanism (3).

24. The apparatus of claim 22, wherein, The detector mechanism (3) is adapted to receive scattered radiation scattered from the detected target based on radiation from the detector mechanism (3). The detector mechanism (3) is adapted to receive scattered radiation scattered from the detected target based on radiation from the detector mechanism (3).

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