High-precision rack and machining method thereof, CT equipment and multi-mode scanning device

Abstract

The invention relates to a machining method for a high-precision rack. The machining method comprises the steps that a fixing support is machined; a bed mounting surface and a plate mounting surface are machined on the fixing support at the same time, so that the bed mounting surface is parallel to the plate mounting surface; mounting a fixing plate on the plate mounting surface, and mounting a bed bracket on the bed mounting surface; and mounting a rotary bracket on the fixed plate. After the bed mounting surface is parallel to the plate mounting surface, the fixed plate is mounted on the plate mounting surface, and the bed bracket is mounted on the bed mounting surface, so that the mounting error between the fixed plate and the bed bracket can be further reduced; the error between the rotating support and the animal bin in the axis direction can be reduced, and therefore the scanning precision is improved. And the animal bin is directly arranged on the fixed bracket, so that the position change of the animal bin relative to the rotating bracket does not need to be worried when the rack moves, and the scanning precision is further improved.

Description

Technical Field

[0001] The present application relates to the field of medical device technology, and in particular to a high-precision rack and a processing method thereof, a CT device, and a multi-modal scanning device. Background Art

[0002] Computed Tomography (CT) is a technology that reconstructs cross-sectional images of the human body based on the different degrees of absorption of X-rays by different tissues. Specifically, the CT device includes a rotating mechanism, a tube, and a detector. The tube and the detector are arranged in the rotating mechanism and symmetrically along the axis of rotation of the rotating mechanism. The rotating tube scans around the patient, and each angle will produce a two-dimensional cross-sectional image. The computer will combine these two-dimensional images to form a three-dimensional image, thereby providing more detailed information to help doctors diagnose and treat diseases. Similarly, CT scanning technology can also be used to scan animal bodies. In actual use, the animal body is first placed on the animal chamber, and then the animal chamber drives the animal to slide into the scanning cavity, and finally the animal body is tested.

[0003] During the production and installation of the animal CT rack, it is necessary to ensure that the axis of the animal compartment is parallel to the axis of the rotating rack, so as to avoid the problem of poor scanning accuracy caused by the position change of the animal compartment.

[0004] In the related art, when an animal CT frame is processed, each part of the frame is generally processed separately and then assembled. However, the assembly process easily leads to error accumulation, so that after the entire frame is installed, the axial direction of the animal chamber is greatly different from the axial direction of the rotating frame, resulting in poor scanning accuracy. Summary of the invention

[0005] Based on this, it is necessary to provide a high-precision rack and its processing method, CT equipment, and multi-modal scanning device to address the problem of poor scanning accuracy.

[0006] A method for processing a high-precision frame, the frame comprising a fixed support, a fixed plate, a rotating support and a bed support, the fixed plate is arranged on the fixed support, the rotating support is rotatably arranged on the fixed plate, the rotating support has a scanning cavity, and the bed support is fixedly connected to the fixed support at one end close to the rotating support; the fixed support has a bed mounting surface and a plate mounting surface; the specific steps of the method for processing the high-precision frame include:

[0007] Processing fixed bracket;

[0008] Processing a bed mounting surface and a plate mounting surface on the fixing bracket at the same time so that the bed mounting surface is parallel to the plate mounting surface;

[0009] Install a fixing plate on the plate mounting surface, and install a bed bracket on the bed mounting surface;

[0010] The rotating bracket is installed on the fixing plate.

[0011] In one embodiment, the plate mounting surface includes a first plate mounting surface and a second plate mounting surface that are spaced apart, and the fixed plate is fixedly connected to the first plate mounting surface and the second plate mounting surface at the same time; the specific steps of simultaneously processing the plate mounting surfaces include:

[0012] The first plate mounting surface and the second plate mounting surface are processed simultaneously on the fixing bracket so that the first plate mounting surface and the second plate mounting surface are coplanar.

[0013] In one embodiment, after the step of simultaneously processing the bed mounting surface and the plate mounting surface on the fixed bracket, the step further includes:

[0014] A plate positioning pin hole and a plate mounting hole are provided on the plate mounting surface, wherein the plate positioning pin hole is used to position the fixing plate on the plate mounting surface, and the plate mounting hole is used to fix the fixing plate on the plate mounting surface;

[0015] A bed positioning pin hole and a bed mounting hole are provided on the bed mounting surface. The bed positioning pin hole is used to fix the bed bracket to the bed mounting surface. The bed mounting hole enables the bed bracket to be fixed to the bed mounting surface.

[0016] A high-precision frame processed by the above-mentioned high-precision frame processing method, the frame includes a fixed bracket, a fixed plate, a rotating bracket and a bed bracket, the rotating bracket is rotatably arranged on the fixed bracket through the fixed plate, the rotating bracket has a scanning cavity, and the bed bracket is fixedly connected to the fixed bracket at one end close to the rotating bracket; the fixed bracket has a bed mounting surface and a plate mounting surface, the fixed plate is mounted on the plate mounting surface, and the bed bracket is mounted on the bed mounting surface.

[0017] A CT device comprises: a tube, a detector, an animal chamber and the above-mentioned rack, wherein the tube and the detector are symmetrically arranged on the rotating bracket, and the animal chamber is slidably connected to the bed bracket along the axial direction of the scanning cavity.

[0018] In one of the embodiments, the CT device also includes a shielding assembly, which includes a front shielding panel, a shielding side panel, and a rear shielding panel for forming a closed shielding cavity, the shielding side panel is arranged around the outside of the rotating bracket with the axis of the scanning cavity as the axis, the front shielding panel and the rear shielding panel are respectively arranged on both sides of the shielding side panel along the axis direction of the scanning cavity, the rotating bracket is arranged in the shielding cavity, and the shielding side panel is arranged on the fixed plate.

[0019] In one of the embodiments, the front shielding panel includes a first shielding door, a second shielding door and a fixed door, the first shielding door and the second shielding door are respectively movably connected to the shielding side panels so that the first shielding door and the second shielding door can be opened or closed relative to the shielding side panels, the fixed door is arranged on the fixed bracket, and a through hole connected to the scanning cavity is opened on the fixed door, and any two of the first shielding door, the second shielding door and the fixed door are tightly matched.

[0020] In one of the embodiments, the CT device also includes a fan, which is fixed on the fixed plate and extends into the shielding cavity. An air inlet is provided on the shielding assembly, and external air entering the shielding cavity from the air inlet can be discharged through the suction action of the fan.

[0021] In one of the embodiments, the frame further includes casters and foot cups, the casters are arranged at the bottom of the fixed bracket, the foot cups are movably connected to the bottom of the fixed bracket, and the foot cups are configured to be retractable to support the CT device.

[0022] A multimodal scanning device, comprising a CT device and a PET device, wherein the PET device is arranged on a side of the CT device away from the bed support. The CT device comprises a first docking structure extending toward the PET device, wherein the first docking structure has a first docking surface, and the PET device comprises a second docking structure extending toward the CT device, wherein the second docking structure has a second docking surface, and the first docking surface is used to be flush with the second docking surface to achieve positioning of the PET device.

[0023] The processing method of the above-mentioned high-precision frame is to first process the entire fixed bracket, and then integrally process the bed mounting surface and the plate mounting surface on the fixed bracket so that the bed mounting surface is parallel to the plate mounting surface. At this time, the parallel accuracy of the bed mounting surface and the plate mounting surface can be guaranteed, and then the fixed plate is installed on the plate mounting surface, and the bed bracket is installed on the bed mounting surface, respectively, which can further reduce the installation error between the fixed plate and the bed bracket. When the rotating bracket is installed on the fixed plate and the animal bin is installed on the bed bracket, the error in the axial direction of the rotating bracket and the animal bin can be reduced, thereby improving the scanning accuracy. And because the animal bin is directly installed on the fixed bracket, there is no need to worry about the position change of the animal bin relative to the rotating bracket when the frame moves, thereby further improving the scanning accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure in which a fixed plate is installed on a fixed bracket in one embodiment.

[0025] Figure 2 for Figure 1 Side view of.

[0026] Figure 3 It is a schematic diagram of the structure in which a detector and a tube are installed on a rack in one embodiment.

[0027] Figure 4 FIG. 4 is a schematic diagram of the structure of a CT device in one embodiment.

[0028] Figure 5 for Figure 4 Schematic diagram of the structure without the shielding component.

[0029] Reference numerals: 100, frame; 110, fixed bracket; 111, bed mounting surface; 112, plate mounting surface; 1121, first plate mounting surface; 1122, second plate mounting surface; 120, fixed plate; 130, rotating bracket; 131, scanning chamber; 140, bed bracket; 150, caster; 160, foot cup; 170, linear guide rail;

[0030] 200, ball tube;

[0031] 300, detector;

[0032] 400, shielding assembly; 410, front shielding panel; 411, first shielding door; 412, second shielding door; 413, fixed door; 420, shielding side plate; 430, shielding bracket;

[0033] 500, fan;

[0034] 600. Electrical components;

[0035] 710, rotating shaft; 720, slip ring;

[0036] 800. Animal warehouse. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0038] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0039] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0040] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0041] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0043] See also Figure 1-Figure 3 , a processing method of a high-precision frame 100 provided in an embodiment of the present application, the frame 100 includes a fixed support 110, a fixed plate 120, a rotating support 130 and a bed support 140, the fixed plate 120 is arranged on the fixed support 110, the rotating support 130 is rotatably arranged on the fixed plate 120, the rotating support 130 has a scanning cavity 131, and the bed support 140 is fixedly connected to the fixed support 110 at one end close to the rotating support 130; the fixed support 110 has a bed mounting surface 111 and a plate mounting surface 112; the specific steps of the processing method of the high-precision frame 100 include:

[0044] Processing a fixing bracket 110;

[0045] The bed mounting surface 111 and the plate mounting surface 112 are simultaneously processed on the fixing bracket 110 so that the bed mounting surface 111 is parallel to the plate mounting surface 112;

[0046] Install the fixing plate 120 on the plate mounting surface 112 and install the bed bracket 140 on the bed mounting surface 111;

[0047] The rotating bracket 130 is installed on the fixing plate 120 .

[0048] In this embodiment, after the entire fixed bracket 110 is processed, the bed mounting surface 111 and the plate mounting surface 112 are integrally processed on the fixed bracket 110 so that the bed mounting surface 111 is parallel to the plate mounting surface 112. At this time, the parallel accuracy of the bed mounting surface 111 and the plate mounting surface 112 can be guaranteed, and then the fixed plate 120 is installed on the plate mounting surface 112 and the bed bracket 140 is installed on the bed mounting surface 111, which can further reduce the installation error between the fixed plate 120 and the bed bracket 140. When the rotating bracket 130 is installed on the fixed plate 120 and the animal bin 800 is installed on the bed bracket 140, the coincidence error of the rotating bracket 130 and the animal bin 800 in the axial direction can be reduced, thereby improving the scanning accuracy. And because the animal bin 800 is directly installed on the fixed bracket 110 through the bed bracket 140, there is no need to worry about the position change of the animal bin 800 relative to the rotating bracket 130 when the rack 100 moves, thereby further improving the scanning accuracy.

[0049] In some embodiments, see Figure 1 The board mounting surface 112 includes a first board mounting surface 1121 and a second board mounting surface 1122 which are spaced apart, and the fixed plate 120 is fixedly connected to the first board mounting surface 1121 and the second board mounting surface 1122 at the same time; the specific steps of simultaneously processing the board mounting surface 112 include: simultaneously processing the first board mounting surface 1121 and the second board mounting surface 1122 on the fixed bracket 110 so that the first board mounting surface 1121 and the second board mounting surface 1122 are coplanar.

[0050] In actual processing, the first plate mounting surface 1121 and the second plate mounting surface 1122 can be simultaneously turned on the fixed bracket 110 by turning, so that the first plate mounting surface 1121 and the second plate mounting surface 1122 are in the same plane. When the fixed plate 120 is respectively fixed to the first plate mounting surface 1121 and the second plate mounting surface 1122, it can be ensured that the fixed plate 120 is parallel to the plate mounting surface 112. Since the rotating bracket 130 is rotatably arranged on the fixed plate 120, the fixed plate 120 needs to have a certain stability and supporting strength. The first plate mounting surface 1121 and the second plate mounting surface 1122 are spaced apart from each other, so that the two ends of the fixed plate 120 are respectively fixed to the first plate mounting surface 1121 and the second plate mounting surface 1122, thereby enhancing the installation strength of the fixed plate 120 and enhancing the stability of the entire frame 100.

[0051] In some embodiments, after the step of simultaneously processing the bed mounting surface 111 and the plate mounting surface 112 on the fixed bracket 110, it also includes: opening a plate positioning pin hole and a plate mounting hole on the plate mounting surface 112, the plate positioning pin hole is used to realize the positioning of the fixed plate 120 and the plate mounting surface 112, and the plate mounting hole is used to fix the fixed plate 120 to the plate mounting surface 112; opening a bed positioning pin hole and a bed mounting hole on the bed mounting surface 111, the bed positioning pin hole is used to realize the positioning of the bed bracket 140 and the bed mounting surface 111, and the bed mounting hole fixes the bed bracket 140 to the bed mounting surface 111.

[0052] In this embodiment, after the bed mounting surface 111 and the plate mounting surface 112 are integrally formed, firstly, according to the positional relationship between the fixed plate 120 and the bed support 140, the bed positioning pin holes and the bed mounting holes are punched on the bed mounting surface 111, and the plate positioning pin holes and the plate mounting holes are punched on the plate mounting surface 112. At the same time, the plate positioning pin holes and the plate mounting holes are punched at the corresponding positions of the fixed plate 120, and the bed positioning pin holes and the bed mounting holes are punched at the corresponding positions of the bed support 140. Then, the positioning pins are passed through the plate positioning pin holes on the plate mounting surface 112 and the plate positioning pin holes on the fixed plate 120 to achieve the positioning of the plate mounting surface 112 and the fixed plate 120; and the positioning pins are passed through the bed positioning pin holes on the bed mounting surface 111 and the bed positioning pin holes on the bed support 140 to achieve the positioning of the bed mounting surface 111 and the bed support 140. Finally, screws are passed through the plate mounting holes on the plate mounting surface 112 and the plate mounting holes on the fixed plate 120 to achieve fixation of the plate mounting surface 112 and the fixed plate 120; and screws are passed through the bed mounting holes on the bed mounting surface 111 and the bed mounting holes on the bed support 140 to achieve fixation of the bed mounting surface 111 and the bed support 140.

[0053] Since the plate mounting surface 112 and the bed mounting surface 111 are integrally processed, the relative parallelism of the two can be ensured. At this time, plate locating pin holes and plate mounting holes are punched on the plate mounting surface 112, and bed locating pin holes and bed mounting holes are punched on the bed mounting surface 111 respectively. This can ensure the position accuracy of all locating pin holes and mounting holes, thereby improving the installation accuracy of the fixed plate 120 and the bed support 140. When the rotating bracket 130 is installed on the fixed plate 120 and the animal warehouse 800 is installed on the bed support 140, the overlap error of the axial direction of the rotating bracket 130 and the bed support 140 can be reduced, thereby improving the scanning accuracy.

[0054] Furthermore, the number of the plate positioning pin holes is two, and the two plate positioning pin holes are respectively a round hole and a waist-shaped hole, which can prevent over-positioning interference while ensuring the positioning of the fixed plate 120, thereby achieving complete fixation of the fixed plate 120 and the plate mounting surface 112, and further improving the installation accuracy of the bed support 140. Specifically, a round hole can be provided on one of the first plate mounting surface 1121 and the second plate mounting surface 1122, and a waist-shaped hole can be provided on the other.

[0055] Similarly, there are two bed positioning pin holes, which are a round hole and a waist-shaped hole respectively. The round hole and the waist-shaped hole can ensure the positioning of the bed support 140 while preventing over-positioning interference, thereby achieving complete fixation of the bed support 140 and the bed mounting surface 111, further improving the installation accuracy of the bed support 140.

[0056] See also Figure 1-Figure 3 A high-precision frame 100 is provided in one embodiment of the present application. The frame 100 includes a fixed bracket 110, a fixed plate 120, a rotating bracket 130 and a bed bracket 140. The rotating bracket 130 is rotatably set on the fixed bracket 110 through the fixed plate 120. The rotating bracket 130 has a scanning cavity 131. One end of the bed bracket 140 close to the rotating bracket 130 is fixedly connected to the fixed bracket 110; the fixed bracket 110 has a bed mounting surface 111 and a plate mounting surface 112. The fixed plate 120 is mounted on the plate mounting surface 112, and the bed bracket 140 is mounted on the bed mounting surface 111.

[0057] In this embodiment, the fixed bracket 110 has a bed mounting surface 111 and a plate mounting surface 112, the plate mounting surface 112 is used to mount the fixed plate 120, and the bed mounting surface 111 is used to mount the bed bracket 140. When the high-precision frame 100 is actually processed, the fixed bracket 110 can be first welded with square steel, and then the bed mounting surface 111 and the plate mounting surface 112 can be cut on the fixed bracket 110 at the same time to ensure that the bed mounting surface 111 and the plate mounting surface 112 are parallel, thereby improving the mounting accuracy of the fixed plate 120 and the bed bracket 140. Since the rotating bracket 130 is mounted on the fixed plate 120, the rotating bracket 130 has a scanning cavity 131. After the animal bin 800 is mounted on the bed bracket 140, the mounting accuracy of the animal bin 800 relative to the scanning cavity 131 can be further improved, so as to ultimately improve the scanning accuracy of the scanning device located on the frame 100.

[0058] See also Figure 3 The CT device provided in one embodiment of the present application includes a tube 200 , a detector 300 and the above-mentioned rack 100 , and the tube 200 and the detector 300 are symmetrically arranged on a rotating bracket 130 .

[0059] Specifically, the CT device may be a CT device for detecting small animals. In this case, a linear slide rail 170 along the axial direction of the scanning cavity 131 is provided on the bed support 140, and an animal bin 800 is provided on the linear slide rail 170. In actual use, the operator places the small animal in the animal bin 800, and the animal bin 800 sends the small animal to the scanning cavity 131. The tube 200 emits radiation to scan the small animal. At this time, the detector 300 receives the radiation of the small animal in the scanning cavity 131, processes the information of the radiation and generates an image, which is convenient for the doctor to diagnose.

[0060] The CT device includes the above-mentioned frame 100, which is used to improve the installation accuracy of the animal chamber 800 relative to the scanning cavity 131. When the animal chamber 800 slides into the scanning cavity 131, the problem of poor scanning accuracy caused by the position change of the animal chamber 800 can be avoided.

[0061] Combination Figure 4 In some embodiments, the CT device further includes a shielding assembly 400, which includes a front shielding panel 410, a shielding side panel 420, and a rear shielding panel (not marked) for forming a closed shielding cavity. The shielding side panel 420 is arranged around the outer side of the rotating bracket 130 with the axis of the scanning cavity 131 as the axis. The front shielding panel 410 and the rear shielding panel are respectively arranged on both sides of the shielding side panel 420 along the axis direction of the scanning cavity 131. The rotating bracket 130 is arranged in the shielding cavity, and the shielding side panel 420 is arranged on the fixed plate 120.

[0062] Specific, combined Figure 5 The CT device also includes a shielding bracket 430, which includes a rod member arranged along the axial direction of the scanning cavity 131, one end of the rod member is fixedly connected to the fixed plate 120, and the number of the rod members is multiple, and the multiple rod members are arranged in sequence along the circumference of the fixed plate 120. The shielding side plate 420 is arranged on the outside of the multiple rod members to fix the shielding side plate 420 through the multiple rod members.

[0063] In this embodiment, the front shielding panel 410, the shielding side panel 420 and the rear shielding panel surround the rotating bracket 130, and the ball tube 200 and the detector 300 are symmetrically arranged on the rotating bracket 130, that is, the shielding assembly 400 wraps the ball tube 200 and the detector 300, and the shielding assembly 400 is used to shield the internal radiation from leaking out to prevent the radiation from irradiating into the external environment and causing harm to the operator.

[0064] Further, combined with Figure 4The front shielding panel 410 is arranged on the side of the shielding side plate 420 close to the bed support 140, and the front shielding panel includes a first shielding door 411, a second shielding door 412 and a fixed door 413. The first shielding door 411 and the second shielding door 412 are respectively movably connected to the shielding side plate 420 so that the first shielding door 411 and the second shielding door 412 can be opened or closed relative to the shielding side plate 420, respectively. The fixed door 413 is arranged on the fixed support 110, and a through hole connected to the scanning cavity 131 is opened on the fixed door 413. Any two of the first shielding door 411, the second shielding door 412 and the fixed door 413 are tightly matched.

[0065] In this embodiment, a through hole is provided on the fixed door 413 to facilitate the animal bed to enter and exit the scanning chamber 131. The first shielding door 411 and the second shielding door 412 can be opened or closed relative to the shielding side plate 420. When the tube 200 or the detector 300 and other parts in the shielding assembly 400 are damaged, the first shielding door 411 and the second shielding door 412 can be opened to facilitate the inspection and maintenance of the parts in the shielding assembly 400.

[0066] Combination Figure 5 In some embodiments, the CT device further includes a fan 500, which is fixed on the fixed plate 120 and extends into the shielding cavity. An air inlet is provided on the shielding assembly 400, and external air entering the shielding cavity from the air inlet can be discharged through the suction action of the fan 500.

[0067] In this embodiment, the air inlet is opened on the shielding side panel 420 and is located on the side close to the ground. The fan 500 extends from the upper part of the shielding cavity into the shielding cavity. The fan 500 is used to take away the heat generated by the detector 300 and the tube 200 on the rotating bracket 130 in the shielding cavity.

[0068] In some embodiments, in combination Figure 3 The rack 100 further includes a caster 150 and a foot cup 160. The caster 150 is disposed at the bottom of the fixed bracket 110. The foot cup 160 is movably connected to the bottom of the fixed bracket 110. The foot cup 160 is configured to be retractable to support the CT device.

[0069] In this embodiment, the fixed bracket 110 is a rectangular frame, and the casters 150 and the foot cup 160 are installed at the four corners of the bottom of the fixed bracket 110. The four casters 150 can be four universal wheels or two universal wheels and two fixed wheels. The foot cup 160 can be directly installed on the bottom of the fixed bracket 110 through threads. When the rack 100 needs to be moved, the foot cup 160 is rotated so that the foot cup 160 is raised. At this time, the caster 150 supports the rack 100, and the rack 100 can be easily moved; when the rack 100 is moved to a specified position, the foot cup 160 is rotated in another direction so that the caster 150 is supported on the ground, and the rack 100 can be fixed on the ground. That is, through the setting of the caster 150 and the foot cup 160, the rack 100 can be moved quickly and fixed.

[0070] In some embodiments, in combination Figure 5 The CT device also includes a rotating shaft 710 and a slip ring 720. The rotating shaft 710 is rotatably connected to the fixed plate 120. One end of the rotating shaft 710 passes through the fixed plate 120 and is connected to the rotating bracket 130. The slip ring 720 is arranged at the other end of the rotating shaft 710 that does not pass through the fixed plate 120.

[0071] The CT device further includes an electrical component 600 , which is fixed on the frame 100 . The electrical component 600 includes a driving member for driving the rotating shaft 710 and a board for data transmission.

[0072] An embodiment of the present application further provides a multi-modal scanning device, comprising a PET device and the above-mentioned CT device, wherein the PET device is arranged on a side of the CT device away from the bed support 140;

[0073] The CT device includes a first docking structure extending toward the PET device, the first docking structure having at least a first docking surface; the PET device includes a second docking structure extending toward the CT device, the second docking structure having at least a second docking surface; the first docking surface is used to be flush with the second docking surface to achieve positioning of the PET device.

[0074] In this embodiment, the first docking surface can be the upper surface of the first docking structure, and the second docking surface is also the upper surface of the second docking structure. When the CT device needs to be docked with the PET device, the height of the PET device is first adjusted so that the first docking surface is in contact with the second docking surface, and then a level is placed on the first docking surface and the second docking surface. If the level is level, it means that the positioning of the PET device in the height direction is completed. Similarly, when the first docking surface can be the right surface of the first docking structure, and the second docking surface is also the right surface of the second docking structure, when the first docking surface is used to be flush with the second docking surface, the left-right positioning of the PET device is completed.

[0075] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A method for processing a high-precision frame, characterized in that: The frame (100) comprises a fixed support (110), a fixed plate (120), a rotating support (130) and a bed support (140); the fixed plate (120) is arranged on the fixed support (110); the rotating support (130) is rotatably arranged on the fixed plate (120); the rotating support (130) has a scanning cavity (131); one end of the bed support (140) close to the rotating support (130) is fixedly connected to the fixed support (110); the fixed support (110) has a bed mounting surface (111) and a plate mounting surface (112); the specific steps of the processing method of the high-precision frame (100) include: Processing a fixed bracket (110); Simultaneously processing a bed mounting surface (111) and a plate mounting surface (112) on the fixing bracket (110) so that the bed mounting surface (111) is parallel to the plate mounting surface (112); Installing a fixing plate (120) on the plate installation surface (112), and installing a bed support (140) on the bed installation surface (111); The rotating bracket (130) is installed on the fixed plate (120).

2. The method for processing a high-precision frame according to claim 1, characterized in that: The plate mounting surface (112) comprises a first plate mounting surface (1121) and a second plate mounting surface (1122) which are arranged at an interval, and the fixing plate (120) is fixedly connected to the first plate mounting surface (1121) and the second plate mounting surface (1122) at the same time; the specific steps of simultaneously processing the plate mounting surfaces (112) include: A first plate mounting surface (1121) and a second plate mounting surface (1122) are simultaneously processed on the fixing bracket (110) so that the first plate mounting surface (1121) and the second plate mounting surface (1122) are coplanar.

3. The method for processing a high-precision frame according to claim 1, characterized in that: After the step of simultaneously processing the bed mounting surface (111) and the plate mounting surface (112) on the fixing bracket (110), the method further comprises: A plate positioning pin hole and a plate mounting hole are provided on the plate mounting surface (112), wherein the plate positioning pin hole is used to realize positioning of the fixing plate component (120) and the plate mounting surface (112), and the plate mounting hole is used to fix the fixing plate component (120) to the plate mounting surface (112); A bed positioning pin hole and a bed mounting hole are provided on the bed mounting surface (111); the bed positioning pin hole is used to realize the positioning of the bed support (140) and the bed mounting surface (111); and the bed mounting hole enables the bed support (140) to be fixed to the bed mounting surface (111).

4. A high-precision frame (100) processed by the high-precision frame processing method according to any one of claims 1 to 3, characterized in that: The frame (100) comprises a fixed support (110), a fixed plate (120), a rotating support (130) and a bed support (140); the rotating support (130) is rotatably arranged on the fixed support (110) through the fixed plate (120); the rotating support (130) has a scanning cavity (131); one end of the bed support (140) close to the rotating support (130) is fixedly connected to the fixed support (110); the fixed support (110) has a bed mounting surface (111) and a plate mounting surface (112); the fixed plate (120) is mounted on the plate mounting surface (112); and the bed support (140) is mounted on the bed mounting surface (111).

5. A CT device, characterized in that: include: A tube (200), a detector (300), an animal chamber (800), and a rack (100) as claimed in claim 4, wherein the tube (200) and the detector (300) are symmetrically arranged on the rotating bracket (130), and the animal chamber (800) is slidably connected to the bed bracket (140) along the axial direction of the scanning cavity (131).

6. The CT device according to claim 5, characterized in that: The CT device further comprises a shielding assembly (400), the shielding assembly (400) comprising a front shielding panel (410), a shielding side panel (420) and a rear shielding panel for forming a closed shielding cavity, the shielding side panel (420) being arranged around the outside of the rotating bracket (130) with the axis of the scanning cavity (131) as a rotating axis, the front shielding panel (410) and the rear shielding panel being arranged on both sides of the shielding side panel (420) along the axis direction of the scanning cavity (131), respectively, the rotating bracket (130) being arranged in the shielding cavity, and the shielding side panel (420) being arranged on the fixed plate (120).

7. The CT device according to claim 6, characterized in that: The front shielding panel (410) is arranged on a side of the shielding side plate (420) close to the bed support (140), and the front shielding panel (410) includes a first shielding door (411), a second shielding door (412) and a fixed door (413). The first shielding door (411) and the second shielding door (412) are respectively movably connected to the shielding side plate (420) so that the first shielding door (411) and the second shielding door (412) can be opened or closed relative to the shielding side plate (420), respectively. The fixed door (413) is arranged on the fixed support (110), and a through hole connected to the scanning cavity (131) is opened on the fixed door (413). Any two of the first shielding door (411), the second shielding door (412) and the fixed door (413) are tightly matched.

8. The CT device according to claim 6, characterized in that: The CT device further comprises a fan (500), wherein the fan (500) is fixed on the fixing plate (120), and the fan (500) extends into the shielding cavity. An air inlet is provided on the shielding assembly (400), and external air entering the shielding cavity from the air inlet can be discharged through the suction effect of the fan (500).

9. The CT device according to claim 5, characterized in that: The rack (100) further comprises a caster (150) and a foot cup (160), wherein the caster (150) is arranged at the bottom of the fixed bracket (110), the foot cup (160) is movably connected to the bottom of the fixed bracket (110), and the foot cup (160) is configured to be retractable to support the CT device.

10. A multimodal scanning device, characterized in that: The multimodal scanning device comprises a PET device and a CT device according to any one of claims 5 to 9, wherein the PET device is arranged on a side of the CT device away from the bed support (140); The CT device includes a first docking structure extending toward the PET device, the first docking structure having at least a first docking surface; the PET device includes a second docking structure extending toward the CT device, the second docking structure having at least a second docking surface, and the first docking surface is used to be flush with the second docking surface to achieve positioning of the PET device.

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