CT device

Abstract

The present disclosure provides a CT device, and relates to the technical field of radiation scanning. The CT device comprises a rack, a support wheel set device, a bearing gland assembly, a rotatable part, a scanning device and a lifting device. The support wheel set device comprises a plurality of support wheels and is arranged on the rack through a hinge shaft bearing seat. The bearing gland assembly is arranged above the hinge shaft bearing seat and is detachably connected with the rack. The rotatable part can rotate around a rotation axis and is supported by the plurality of support wheel set devices during rotation. The scanning device is arranged on the rotatable part and is used for scanning an object. The lifting device is arranged on the rack and is used for lifting the rotatable part to separate the rotatable part from the support wheel set device. The bearing gland assembly can be detached from the rack, so that at least part of the hinge shaft bearing seat is exposed, and the support wheel set device can be integrally disassembled.

Description

Technical Field

[0001] This disclosure relates to the field of radiation inspection technology, and more specifically, to a CT device. Background Technology

[0002] CT technology plays a vital role in security inspections because it can eliminate the effects of overlapping objects. CT equipment is also widely used in technical fields such as item inspection; it can inspect not only smaller items such as baggage and flight cases, but also larger items such as containers and vehicles.

[0003] In related technologies, CT equipment uses a slip ring device to acquire projection data from different angles by rotating the X-ray machine and detector. This data is then reconstructed to obtain tomographic images, thus revealing internal information about the baggage being inspected. Combined with dual-energy or multi-energy imaging technology, current baggage inspection equipment can reconstruct the atomic number and electron density of the inspected substances, thereby identifying the types of materials. This has proven highly effective in detecting explosives, dangerous goods, and other hazardous materials.

[0004] For example, in existing distributed bearing CTs, the hinge bearing housing of the radial support wheel assembly uses an integral structure; the bracket of the radial support wheel assembly also uses an integral structure. The support wheels of the support wheel assembly in a distributed bearing CT are consumable parts and need to be replaced when they wear down to a certain extent. Existing technologies require highly skilled operators, have long replacement cycles, and result in long equipment downtime.

[0005] The information disclosed in this section is only for understanding the background of the disclosed concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0006] In view of at least one of the above-mentioned technical problems, this disclosure provides a CT device.

[0007] One aspect of this disclosure provides a CT device, comprising: a gantry; a support wheel assembly including a plurality of support wheels, the support wheel assembly being mounted on the gantry via a hinge bearing housing; a bearing cap assembly disposed above the hinge bearing housing and covering at least a portion of the hinge bearing housing, the bearing cap assembly being detachably connected to the gantry; a rotatable portion capable of rotating about a rotation axis, the rotatable portion being supported by the plurality of support wheel assemblies during rotation; a scanning device disposed on the rotatable portion for scanning an object to be examined; and a lifting device disposed on the gantry for lifting the rotatable portion and raising it to detach from the support wheel assemblies; wherein the bearing cap assembly is detachable from the gantry, exposing at least a portion of the hinge bearing housing, so that the support wheel assembly can be disassembled and reassembled as a whole.

[0008] In some exemplary embodiments of this disclosure, the support wheel assembly can be assembled and disassembled as a whole along a first direction, which is perpendicular to the direction of the rotation axis.

[0009] In some exemplary embodiments of this disclosure, the bearing cap assembly is disposed above the hinge bearing housing on one side of the supporting wheel assembly. For example, the bearing cap assembly is disposed above the hinge bearing housing on the side away from the supporting wheel assembly along a first direction.

[0010] In some exemplary embodiments of this disclosure, the bearing cap assembly includes a bearing cap and a handle, the bearing cap being detachably connected to the frame, and the handle being disposed on the surface of the bearing cap away from the hinge bearing seat.

[0011] In some exemplary embodiments of this disclosure, the CT device includes m support wheel assembly units and m bearing cover assemblies, where m is a positive integer greater than or equal to 2; the m bearing cover assemblies and m support wheel assembly units are arranged in a one-to-one correspondence.

[0012] In some exemplary embodiments of this disclosure, each of the m support wheel assembly devices is mounted on the frame via a hinge bearing seat, and the m support wheel assembly devices are arranged symmetrically along the rotation axis.

[0013] In some exemplary embodiments of this disclosure, the wheel assembly support device includes a wheel assembly bracket, wherein the wheel assembly bracket has a triangular structure; the wheel assembly bracket is connected to the frame via a hinge bearing along the rotation axis.

[0014] In some exemplary embodiments of this disclosure, the supporting wheel assembly device further includes two supporting wheels, wherein the two supporting wheels are symmetrically arranged on the long side of the wheel assembly bracket; each supporting wheel forms an integral structure with the wheel axle through a bearing and is located at a preset position on the long side of the wheel assembly bracket.

[0015] In some exemplary embodiments of this disclosure, the wheel assembly support device further includes a wheel assembly cover, which is connected to the wheel assembly bracket by a plurality of bolts.

[0016] In some exemplary embodiments of this disclosure, multiple sets of lifting devices are provided, and the multiple sets of lifting devices are arranged at intervals along the rotation axis direction.

[0017] In some exemplary embodiments of this disclosure, the CT device further includes a ranging device mounted on the frame, which is used to measure the lifting height of the rotatable part.

[0018] The second aspect of this disclosure provides a method for quick assembly and disassembly of support wheels for a CT scanner, comprising: using a lifting device to elevate a rotatable part to a position detached from the support wheel assembly; disassembling the connector between the frame supporting the support wheel assembly and the bearing cap assembly, and removing the bearing cap assembly from the frame to expose at least a portion of the hinge bearing seat; removing the support wheel assembly from the frame; disassembling the connector between the wheel assembly bracket and the wheel assembly cap in the support wheel assembly, and removing the wheel assembly cap; and removing the support wheel and axle from the wheel assembly bracket as a whole, and replacing the support wheel.

[0019] In some exemplary embodiments of this disclosure, removing the bearing cap assembly from the frame includes: lifting the bearing cap assembly using the handle of the bearing cap assembly. For example, removing the support wheel assembly from the frame includes: pulling the support wheel assembly out along a first direction, wherein the first direction is perpendicular to the direction of the rotation axis.

[0020] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0021] To better understand this disclosure, it will be described in detail with reference to the following figures:

[0022] Figure 1 This is a front view of a CT device according to some exemplary embodiments of the present disclosure;

[0023] Figure 2 This is a side view of a CT device according to some exemplary embodiments of the present disclosure;

[0024] Figure 3A This is a front view of a rotatable portion of a CT device according to some exemplary embodiments of the present disclosure;

[0025] Figure 3B This is a side view of a rotatable portion of a CT device according to some exemplary embodiments of the present disclosure;

[0026] Figure 4A This is a schematic diagram of the arrangement of the support device for a CT device according to some exemplary embodiments of the present disclosure;

[0027] Figure 4B This is a diagram illustrating one arrangement of a lifting device for a CT scanner according to some exemplary embodiments of the present disclosure;

[0028] Figure 4C This is a schematic diagram of the structure of the drive assembly in the lifting device of a CT device according to some exemplary embodiments of the present disclosure;

[0029] Figure 5A This is a side view schematic diagram of the structure of the bearing cover assembly of a CT device according to some exemplary embodiments of the present disclosure;

[0030] Figure 5B This is a three-dimensional structural schematic diagram of a bearing cover assembly of a CT device according to some exemplary embodiments of the present disclosure;

[0031] Figure 6 This is a structural schematic diagram of a support wheel assembly for a CT device according to some exemplary embodiments of the present disclosure;

[0032] Figure 7 This is a flowchart of a method for quickly assembling and disassembling support wheels of a CT device according to some exemplary embodiments of the present disclosure. Detailed Implementation

[0033] Specific embodiments of this disclosure will now be described in detail. It should be noted that the embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this disclosure. In the following description, numerous specific details are set forth in order to provide a thorough understanding of this disclosure. However, it will be apparent to those skilled in the art that these specific details are not necessary to implement this disclosure. In other instances, well-known structures, materials, or methods have not been specifically described to avoid obscuring this disclosure.

[0034] Throughout this specification, references to "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in connection with that embodiment or example is included in at least one embodiment of this disclosure. Therefore, the phrases "in an embodiment," "in an embodiment," "an example," or "an example" appearing in various places throughout the specification do not necessarily refer to the same embodiment or example. Furthermore, specific features, structures, or characteristics can be combined in one or more embodiments or examples in any suitable combination and / or sub-combination. Moreover, those skilled in the art will understand that the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. The terms “comprising,” “including,” etc., as used herein indicate the presence of features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0036] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0037] In existing distributed bearing CT systems, the hinge bearing housing of the radial support wheel assembly uses an integral structure; the bracket of the radial support wheel assembly also uses an integral structure. The support wheels of the support wheel assembly in the distributed bearing CT are consumable parts and need to be replaced when they wear down to a certain extent. Current technology requires specialized tools to press the bearings in and out at the user's site when replacing the wheels, which demands high operator skill, results in long replacement cycles, and significant equipment downtime.

[0038] In view of this, to solve such problems, embodiments of this disclosure provide a CT device, wherein the device includes: a frame; a support wheel assembly including a plurality of support wheels, the support wheel assembly being mounted on the frame via a hinge bearing seat; a bearing cover assembly disposed above the hinge bearing seat and covering at least a portion of the hinge bearing seat, the bearing cover assembly being detachably connected to the frame; a rotatable part capable of rotating about a rotation axis, the rotatable part being supported by the plurality of support wheel assemblies during rotation; a scanning device disposed on the rotatable part, the scanning device being used to scan an object to be inspected; and a lifting device disposed on the frame, the lifting device being used to lift the rotatable part, raising the rotatable part to detach from the support wheel assembly; wherein the bearing cover assembly can be detached from the frame, exposing at least a portion of the hinge bearing seat, so that the support wheel assembly can be disassembled and reassembled as a whole along a first direction, the first direction being perpendicular to the rotation axis direction.

[0039] In this equipment, both the hinge shaft bearing housing and the wheel assembly bracket of the supporting wheel assembly adopt a separate design and integral machining method. This allows the supporting wheel assembly to be pulled out directly after the bearing cover assembly above the hinge shaft bearing housing is disassembled. Then, the wheel assembly cover can be removed, and the supporting wheel and axle on the wheel assembly bracket can be taken out as a whole for replacement. Therefore, by using this equipment, the mechanism can be quickly disassembled and assembled, ensuring machining accuracy and enabling rapid replacement of the supporting wheel. Wheels can be easily and quickly replaced on-site, requiring low operator skill and resulting in low cost.

[0040] The following is combined with Figures 1 to 6 An embodiment of the quick-assembly and disassembly structure of the CT device according to the present disclosure will be described in detail.

[0041] Figure 1 This is a front view of a CT device according to some exemplary embodiments of the present disclosure. Figure 2 This is a side view of a CT device according to some exemplary embodiments of the present disclosure. Figure 3A This is a front view of a rotatable portion of a CT device according to some exemplary embodiments of the present disclosure. Figure 3B This is a side view of a rotatable portion of a CT device according to some exemplary embodiments of the present disclosure.

[0042] like Figures 1 to 3B As shown, the CT equipment 100 includes a frame 110, a support wheel assembly 1, a rotatable part 2, a scanning device 3, a lifting device 4, and a bearing cover assembly 5.

[0043] The frame 110 serves as a base supporting other components of the CT equipment 100. The support wheel assembly 1 is secured to the frame 110 via a hinge bearing seat 8, and the support wheel assembly 1 supports the rotatable part 2. Multiple support wheel assemblies 1 can be configured, and the multiple support wheel assemblies 1 are symmetrically arranged on both sides of the rotatable part 2 along the direction of the rotation axis AX1.

[0044] The support wheel assembly 1 includes a plurality of support wheels 11, wherein at least one support wheel 11 of at least one support wheel assembly 1 serves as a drive wheel. For example, as Figure 2 One of the support wheels 11 in the support wheel assembly 1 is connected to the drive motor, and the support wheel 11 serves as the drive wheel.

[0045] The rotatable part 2 can rotate around the rotation axis AX1 under the drive of the drive wheel. During the rotation of the rotatable part 2, the rotatable part 2 is supported by multiple support wheel sets 1.

[0046] like Figure 2 As shown, the rotatable part 2 is in the direction parallel to the rotation axis AX1, the rotatable body 22 is sandwiched between two rotatable tracks 21, and the scanning device 3 is mounted on the rotatable body 22.

[0047] like Figure 3A and Figure 3B As shown, the scanning device 3 includes a radiation source 31 and a detector 32. Both the radiation source 31 and the detector 32 are mounted on the rotatable part 2 and are arranged opposite each other along the radial direction of the rotatable part 2. For example, the radiation source 31 is located on one side of the rotatable part, and the detector 32 is located on the second side opposite to the first side. The center of gravity of the radiation source 31 and the detector 32 is located on the rotation axis AX1, thereby ensuring that no vibration occurs when the rotatable part drives the radiation source 31 and the detector 32 to rotate.

[0048] The lifting device 4 is mounted on the frame 110. The lifting device 4 is used to lift the rotatable part 2. The lifting device 4 lifts the rotatable part 2 and moves it along the second direction D2 (i.e., rises), so that the rotatable part 2 is disengaged from the support of the support wheel assembly 1.

[0049] The bearing cap assembly 5 is located above the hinge shaft bearing seat 8, and is connected to the frame 110 by bolts 52. Multiple bearing cap assemblies 5 can be provided, corresponding one-to-one with multiple support wheel assembly devices 1.

[0050] Specifically, the rotatable part 2 is raised to detach from the support wheel assembly 1 by the lifting device 4, the bearing cover assembly 5 above the hinge bearing seat 8 is disassembled, the support wheel assembly 1 is then pulled out along the first direction D1, which is perpendicular to the rotation axis AX1, and the bolts of the wheel bracket 611 and the wheel cover 612 in the support wheel assembly 1 are then removed, and the wheel cover 612 is taken away; the support wheel 11 and the axle 615 on the wheel bracket 611 are taken out as a whole, and the support wheel 11 is replaced.

[0051] The following is combined with Figures 4A to 7 The embodiments of the rapid disassembly of the CT equipment in this disclosure will be described in detail.

[0052] A lifting device 4 is mounted on the frame 110. The lifting device 4 is used to lift the rotatable part 2. The lifting device 4 lifts the rotatable part 2 and moves it along the second direction D2 (i.e., rises), causing the rotatable part 2 to detach from the support of the support wheel assembly 1. Specifically, the rotatable part 2 includes a rotatable track 21 and a rotatable body 22, and has a relatively large weight; furthermore, the rotatable part 2 is equipped with a radiation source 31 and a detector 32, making the overall weight of the rotatable part 2 relatively large. The lifting device 4 is positioned below the rotatable part 2 and applies an upward thrust to it. When the thrust exceeds the weight of the rotatable part 2 (including the components mounted thereon), the rotatable part 2 (including the components mounted thereon) can move along the second direction D2 (i.e., rises), thereby allowing the rotatable part 2 to detach from the support of the support wheel assembly 1. This reduces the risk of the heavy rotatable part damaging the supporting device below before product transportation or when the product is not in operation for an extended period. Furthermore, when the support wheel assembly 1 is damaged, the rotatable part can be lifted upwards, making maintenance of the support wheel assembly 1 easier. For example, when the support wheel assembly of the support wheel assembly 1 is worn and needs to be replaced, the rotatable part can be lifted using the lifting device 4 to perform wheel replacement work.

[0053] Figure 4A This is a schematic diagram of the arrangement of the support device for a CT device according to some exemplary embodiments of the present disclosure. Figure 4B This is a diagram illustrating one arrangement of a lifting device for a CT scanner according to some exemplary embodiments of the present disclosure; Figure 4C This is a schematic diagram of the structure of the drive assembly in the lifting device of a CT device according to some exemplary embodiments of the present disclosure.

[0054] In some exemplary embodiments of this disclosure, such as Figure 4A As shown, the lifting device 4 is located between the rotatable part 2 and the frame 110. Two sets of lifting devices 4 are provided, each set positioned below one of the two rotatable tracks 21. The two sets of lifting devices 4 operate synchronously to lift the rotatable part 2.

[0055] like Figure 4B As shown, each lifting device 4 includes: a mounting block 7, a support part 41, multiple connecting rod groups 42, and a drive assembly 43.

[0056] The support portion 41 is used to abut against the rotatable track 21. The support portion 41 includes a support plate 411a and a roller assembly 412a. The length direction of the support plate 411a is perpendicular to the rotation axis AX1, and the side of the support plate 411a near the rotatable portion 2 is curved. The roller assembly 412a is located on the side of the support plate 411a near the rotatable portion 2. The roller assembly 412a includes a first roller and a second roller, which are respectively located on both sides of the support plate 411a along its length. The first roller and the second roller are symmetrically arranged about the center of the rotatable portion 2. The rollers are rotatably mounted on the support plate 411a and their rotation axis is parallel to the rotation axis AX1. When the lifting device 4 lifts the rotatable portion 2 upward, the rollers abut against the rotatable track 21.

[0057] Continue to refer to Figure 4B Each connecting rod assembly 42 includes a first connecting rod 421 and a second connecting rod 422. The first end 4211 of the first connecting rod 421 is hinged to the frame 110, and the hinge axis is parallel to the rotation axis AX1. The second end 4212 of the first connecting rod 421 and the first end 4221 of the second connecting rod 422 are hinged to each other, and the hinge axis is parallel to the rotation axis AX1. The support plate 411a is hinged to the mounting block 7, and the hinge axis is parallel to the rotation axis AX1. The second end 4222 of the second connecting rod 422 is hinged to the mounting block 7, and the hinge axis is parallel to the rotation axis AX1. The hinge point between the support plate 411a and the mounting block 7 is collinear with the center of the rotatable part 2.

[0058] In other embodiments, the support plate 411a may be fixedly connected to the mounting block 7.

[0059] For example, the number of connecting rod groups 42 can be set to two, three, or four, etc. When the number of connecting rod groups 42 is three, the three connecting rod groups 42 can be evenly spaced along a direction perpendicular to the rotation axis AX1 (i.e., the length arrangement direction of the support plate 411a). The multiple connecting rod groups 42 spaced apart can enhance the stability of the lifting device 4 in lifting the rotatable track 21.

[0060] It should be noted that since the distance between the rotatable part 2 and the support wheel assembly 1 does not need to be large when lifting, only one set of connecting rod assemblies 42 is provided along the second direction D2 in this embodiment. However, the number of connecting rod assemblies 42 along the second direction D2 can be adjusted according to the actual lifting height requirement. When multiple connecting rod assemblies 42 are provided along the second direction D2, the multiple connecting rod assemblies 42 can be hinged to each other to form a scissor structure. Therefore, a scissor mechanism and a supporting part 41 can also be used to lift the rotatable part 2.

[0061] In some other embodiments, the lifting device 4 may include a support portion 41 and a hydraulic jack. The output end of the hydraulic jack is hinged to the support portion 41, and the fixed end of the hydraulic jack is fixed to the frame 110.

[0062] Reference Figure 4B and 4C The drive assembly 43 is used to drive multiple connecting rod assemblies 42 to open and close synchronously, thereby raising and lowering the support part 41. The drive assembly 43 includes: a lead screw 431, two sliders 433, and a drive element 432.

[0063] The lead screw 431 is arranged perpendicular to the rotation axis AX1 (i.e., the length direction of the support plate 411a). The two sliders 433 are the first slider 4331 and the second slider 4332, respectively. The two connecting rod groups 42 are divided into a first connecting rod group 42a and a second connecting rod group 42b. The first connecting rod group 42a is located on the first side of the frame 110, and the second connecting rod group 42b is located on the second side of the frame 110. The first connecting rod group 42a and the second connecting rod group 42b are arranged symmetrically about the center of the rotatable part 2. The first slider 4331 corresponds to the first connecting rod group 42a, and the second slider 4332 corresponds to the second connecting rod group 42b. In the first connecting rod group 42a, the second end 4212 of the first connecting rod 421 and the first end 4221 of the second connecting rod 422 are both hinged to the first slider 4331; in the second connecting rod group 42b, the second end 4212 of the first connecting rod 421 and the first end 4221 of the second connecting rod 422 are both hinged to the second slider 4332; the first slider 4331 and the second slider 4332 are both threaded onto the lead screw 431. The driving component 432 is a servo motor, and the output end of the servo motor is fixedly connected to one end of the lead screw 431. The servo motor drives the lead screw 431 to rotate, so that the multiple connecting rod groups 42 open and close synchronously.

[0064] In some other embodiments, the drive element 432 may also be a handle, which is fixedly connected to one end of the lead screw 431. Shaking the handle rotates the lead screw 431, thereby causing the multiple connecting rod groups 42 to open and close synchronously.

[0065] In some embodiments of this disclosure, the CT device further includes a ranging device 6, which is mounted on the frame 110 and is used to measure the lifting height of the rotatable part 2.

[0066] Specifically, the ranging device 6 includes a laser displacement sensor 61, which is mounted on the frame 110.

[0067] Understandably, the laser displacement sensor 61 includes a laser, a laser detector, and a measurement circuit. The laser emitter projects a visible red laser beam onto the surface of the rotatable part 2 through a lens. The laser beam reflected from the surface of the rotatable part 2 passes through the receiver lens and is received by an internal CCD linear camera. Depending on the distance, the CCD linear camera can receive the reflected light at different angles. Based on this angle and the known distance between the laser and the camera, the digital signal processor can calculate the distance between the sensor and the object being measured.

[0068] It should be noted that the present disclosure does not specifically limit the type of ranging device 6. For example, the ranging device 6 can also be a linear displacement sensor, a drawstring displacement sensor, or a magnetostrictive displacement sensor, etc. An appropriate type of ranging device 6 can be selected according to actual usage requirements.

[0069] In some exemplary embodiments of this disclosure, two sets of lifting devices 4 are provided, and the two sets of lifting devices 4 are evenly spaced along the rotation axis AX1. The two sets of lifting devices 4 are symmetrically arranged on opposite sides of the rotatable body 22, and both sets of lifting devices 4 are located between two rotatable tracks 21.

[0070] Figure 5A This is a side view schematic diagram of the structure of a bearing cover assembly of a CT device according to some exemplary embodiments of the present disclosure.

[0071] Figure 5B This is a three-dimensional structural schematic diagram of a bearing cover assembly of a CT device according to some exemplary embodiments of the present disclosure.

[0072] For details, please refer to Figure 1 , Figure 2 , Figure 5A and Figure 5B As shown, the bearing cap assembly 5 is disposed above the hinge bearing seat on the side away from the support wheel assembly 1 along the first direction D1, and the first direction D1 is perpendicular to the rotation axis AX1 direction.

[0073] In some embodiments of this disclosure, multiple support wheel assembly devices 1 are symmetrically arranged on both sides of the rotatable part 2 along the rotation axis AX1. Each support wheel assembly device 1 is mounted on the frame 110 via a hinge bearing seat. Therefore, the bearing cap assembly 5 is also symmetrically arranged on both sides of the rotatable part 2 along the rotation axis AX1.

[0074] Please refer to Figure 1 , Figure 5A and Figure 5B As shown, the bearing cap assembly 5 includes a bearing cap 53 and a handle 51. The bearing cap 53 is detachably connected to the frame 110, and the handle 51 is disposed on the surface of the bearing cap 53 away from the hinge bearing seat 8. For example, a set of handles 51 is provided above each bearing cap 53 and symmetrically arranged along the first direction D1; each set of handles 51 is fixedly connected to the bearing cap 53 by bolts 54, and the bearing cap 53 is connected to the frame 110 by bolts 52.

[0075] Specifically, by lifting the rotatable part 2 with the lifting device 4 to detach it from the support wheel assembly device 1, the bolts 52 of the bearing cover 53 above the hinge shaft bearing seat 8 are removed, the bearing cover 53 is lifted with the handle 51, and then the support wheel assembly device 1 is pulled out as a whole along the first direction D1, thus achieving quick disassembly and assembly.

[0076] Figure 6 This is a structural schematic diagram of a support wheel assembly for a CT device according to some exemplary embodiments of the present disclosure.

[0077] like Figure 6 As shown, the wheel support device 1 includes a wheel support bracket 611, which has a triangular structure; along the rotation axis AX1, the wheel support bracket 611 is connected to the frame 110 via a hinge bearing 9.

[0078] Continue to refer to Figure 6 The wheel support device 1 also includes two support wheels 11, which are symmetrically arranged on the long side of the wheel support bracket 611. Each support wheel 11 forms an integral structure with the wheel axle 615 through the bearing 614 and is located at a preset position on the long side of the wheel support bracket 611.

[0079] Continue to refer to Figure 6 Each wheel assembly 1 also includes a wheel assembly cover 612, which is connected to the wheel assembly bracket 611 by a plurality of bolts 613.

[0080] Specifically, by pulling out the support wheel assembly 1 as a whole along the first direction D1, the wheel assembly cover 612 is removed, and the support wheel 11 and axle 615 on the wheel assembly bracket 611 are taken out as a whole, allowing for quick replacement of the support wheel 11. Removing the support wheel 11 and axle 615 as a whole on-site avoids damage to the support wheel assembly 1 caused by pressing the bearing 614 in or out with tools. Simultaneously, this quick-release structure avoids requiring highly skilled operators, long replacement cycles, and extended equipment downtime.

[0081] Figure 7This is a flowchart of a method for quickly assembling and disassembling support wheels of a CT device according to some exemplary embodiments of the present disclosure.

[0082] Specifically, a method for quick assembly and disassembly of support wheels for CT equipment includes steps S710 to S750.

[0083] During operation S710, the rotatable part 2 is lifted by the lifting device 4, so that the rotatable part 2 rises to the position where it is detached from the support wheel assembly device 1.

[0084] In operation S720, the connecting piece between the frame 110 supporting the support wheel assembly 1 and the bearing cover assembly 5 is removed, and the bearing cover assembly 5 is removed from the frame 110 to expose at least a portion of the hinge shaft bearing seat 8.

[0085] In operation S730, the support wheel assembly 1 is removed from frame 110;

[0086] In operation S740, the connecting piece between the wheel set bracket 611 and the wheel set cover 612 in the wheel set support assembly 1 is disassembled, and the wheel set cover 612 is removed; and

[0087] During operation S750, the support wheel 11 and axle 615 on the wheel set bracket 611 are removed as a whole, and the support wheel 11 is replaced.

[0088] The process of removing the bearing cap assembly 5 from the frame 110 includes: lifting the bearing cap assembly 5 using the handle 51 of the bearing cap assembly 5; and removing the support wheel assembly 1 from the frame 110 includes: pulling out the support wheel assembly 1 along a first direction D1, wherein the first direction D1 is perpendicular to the direction of the rotation axis AX1.

[0089] Through the embodiments of this disclosure, the quick disassembly and assembly method enables convenient and rapid wheel replacement at the disassembly and assembly site, requiring low technical skills from operators and incurring low costs.

[0090] In some embodiments of this disclosure, the CT device further includes a magnetic device disposed on the gantry for providing magnetic attraction to the rotatable part when the rotatable part rotates, thereby applying an attractive force to the rotatable part toward the gantry.

[0091] For example, the magnetic device includes a plurality of permanent magnets or electromagnets, which are arranged on the frame at intervals from each other along the rotation direction of the rotatable part.

[0092] For example, multiple permanent magnets or electromagnets are arranged at uniform intervals on the frame along the rotation direction of the rotatable part. For instance, multiple permanent magnets are arranged on the frame along the outer circumference of the rotating part, and can be arranged in the lower region of the frame or in other regions of the frame.

[0093] like Figure 3A and Figure 3B As shown, the rotatable part 2 includes a rotatable body 22 and two rotatable tracks. The scanning device 3 is disposed on the rotatable body 22. In some embodiments, the rotatable tracks include a magnetic material. In some optional embodiments, a magnetic part made of magnetic material is mounted on the outer peripheral surface of the rotatable tracks. This magnetic part can attract each other with the magnetic device, thereby applying an attractive force to the rotatable part 2 toward the frame 110.

[0094] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0095] Although embodiments of the present disclosure have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present disclosure, the scope of which is defined by the claims and their equivalents. Those skilled in the art will understand that the features recited in the various embodiments and / or claims of the present disclosure can be combined or combined in various ways, even if such combinations or combinations are not expressly stated in the present disclosure. In particular, the features recited in the various embodiments and / or claims of the present disclosure can be combined and / or combined in various ways without departing from the spirit and teachings of the present disclosure. All such combinations and / or combinations fall within the scope of the present disclosure.

Claims

1. A CT scanner, characterized in that, include: frame; A wheel assembly support device includes a wheel assembly cover, a wheel assembly bracket, and multiple support wheels. The wheel assembly support device is mounted on the frame via a hinge shaft bearing seat, and the wheel assembly cover is connected to the wheel assembly bracket via multiple bolts. A bearing cap assembly is disposed above the hinge shaft bearing housing and covers at least a portion of the hinge shaft bearing housing, and the bearing cap assembly is detachably connected to the frame; The rotatable part is capable of rotating around a rotation axis, and during the rotation of the rotatable part, the rotatable part is supported by a plurality of the support wheel assembly devices; A scanning device is disposed on the rotatable part, and the scanning device is used to scan the item to be inspected; as well as A lifting device is provided on the frame. The lifting device is used to lift the rotatable part and raise the rotatable part to the point of being detached from the support wheel assembly. The bearing cap assembly can be removed from the frame, exposing at least a portion of the hinge bearing seat, so that the support wheel assembly can be disassembled as a whole.

2. The CT equipment according to claim 1, characterized in that, The support wheel assembly can be assembled and disassembled as a whole along a first direction, which is perpendicular to the direction of the rotation axis.

3. The CT equipment according to claim 2, characterized in that, The bearing cap assembly is disposed on one side of the support wheel assembly above the hinge bearing seat.

4. The CT device according to claim 1 or 3, characterized in that, The bearing cap assembly includes a bearing cap and a handle. The bearing cap is detachably connected to the frame, and the handle is disposed on the surface of the bearing cap away from the hinge bearing seat.

5. The CT device according to claim 1 or 3, characterized in that, The CT device includes m support wheel assembly units and m bearing cover assemblies, where m is a positive integer greater than or equal to 2; the m bearing cover assemblies and the m support wheel assembly units are arranged in a one-to-one correspondence.

6. The CT device according to claim 5, characterized in that, Each of the m support wheel assembly devices is mounted on the frame via the hinge bearing seat, and the m support wheel assembly devices are arranged symmetrically along the direction of the rotation axis.

7. The CT device according to claim 1 or 3, characterized in that, in, The wheel assembly bracket has a triangular structure; along the rotation axis, the wheel assembly bracket is connected to the frame via a hinge bearing.

8. The CT device according to claim 7, characterized in that, The support wheel assembly also includes two support wheels. The two support wheels are symmetrically arranged on the long side of the wheel assembly bracket; Each of the support wheels forms an integral structure with the wheel axle through a bearing and is located at a predetermined position on the long side of the wheel set bracket.

9. The CT device according to claim 1 or 3, characterized in that, The lifting device is provided in multiple sets, and the multiple sets of lifting devices are arranged at intervals along the rotation axis.

10. The CT device according to claim 1 or 3, characterized in that, The CT equipment also includes a ranging device, which is mounted on the frame and is used to measure the lifting height of the rotatable part.

11. A method for quick assembly and disassembly of support wheels for a CT scanner, characterized in that, Based on the CT equipment according to any one of claims 1-10, the method comprises: The rotatable part is lifted using a lifting device, so that the rotatable part rises to a position where it is detached from the support wheel assembly. Disassemble the connecting piece between the frame supporting the support wheel assembly and the bearing cap assembly, and remove the bearing cap assembly from the frame to expose at least a portion of the hinge shaft bearing housing; Remove the support wheel assembly from the frame; Disassemble the connecting piece between the wheel assembly bracket and the wheel assembly cover in the supporting wheel assembly device, and remove the wheel assembly cover; and Remove the support wheel and axle from the wheel set bracket as a whole, and replace the support wheel.

12. The method according to claim 11, characterized in that, The step of removing the bearing cap assembly from the frame includes: lifting the bearing cap assembly using the handle of the bearing cap assembly.

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