Standby assembly of medical imaging system, suspension device and X-ray imaging system

Abstract

The invention provides a standby assembly of a medical imaging system, a suspension device and an X-ray imaging system. The medical imaging system comprises a driving assembly, the driving assembly comprises a rotating shaft, the standby assembly comprises a worm gear part and a worm part, the worm gear part is installed on the rotating shaft, the worm part is installed at a preset distance from the worm gear part, and the worm part is provided with a first adjusting part and a second adjusting part. The first adjusting part can be operated to enable the worm part to be meshed with the worm wheel part, and the second adjusting part can be operated to drive the worm wheel part through the worm part so as to drive the rotating shaft to move.

Description

Technical Field

[0001] The present invention relates to medical imaging technology, and more particularly to a spare component, a suspension device, and an X-ray imaging system of a medical imaging system. Background Art

[0002] In an X-ray imaging system, radiation from an X-ray source is directed at a subject, which is typically a patient in a medical diagnostic application. A portion of the radiation passes through the subject and impinges on a detector, which is divided into a matrix of discrete elements (e.g., pixels). The detector elements are read out to generate an output signal based on the amount or intensity of the radiation impinging on each pixel area. The signal can then be processed to generate a medical image that can be displayed for viewing, and the medical image can be displayed in a display device of the X-ray imaging system.

[0003] X-ray imaging systems include suspended X-ray imaging systems, floor-mounted X-ray imaging systems, and mobile X-ray imaging systems. Particularly for a suspended X-ray imaging system, the suspension device is installed on the ceiling. The suspension device includes a guide rail, a telescopic cylinder, a tube assembly, etc., and the suspension device includes five-axis movement, including three-axis translation and two-axis rotation. For each axis of movement, a corresponding drive component needs to be provided. When any drive component or its internal components fail, the suspension device will immediately stop moving and remain in its current position, requiring on-site engineers to troubleshoot and repair. Especially during the repair process, since components such as the telescopic cylinder and the tube assembly have a certain weight (about 100 kg), a lifting mechanism is required to remove, replace, and reinstall each component. Moreover, during the entire process, the suspension device cannot move anymore and thus cannot take pictures again. The whole process is time-consuming, laborious, and delays the shooting progress of the hospital. Summary of the Invention

[0004] The present invention provides a spare component, a suspension device, and an X-ray imaging system of a medical imaging system.

[0005] An exemplary embodiment of the present invention provides a spare component of a medical imaging system. The medical imaging system includes a drive component, and the drive component includes a rotating shaft. The spare component includes a worm gear portion and a worm portion. The worm gear portion is installed on the rotating shaft, the worm portion is installed at a preset distance from the worm gear portion, and the worm portion has a first adjustment portion and a second adjustment portion. The first adjustment portion can be operated to engage the worm portion with the worm gear portion, and the second adjustment portion can be operated to drive the worm gear portion through the worm portion and then drive the rotating shaft to move.

[0006] Exemplary embodiments of the present invention provide a suspension device. The suspension device includes a set of vertically installed guide rails, a pulley, and a telescopic cylinder. The guide rails are installed on the ceiling, the pulley is installed on the guide rails, the pulley is connected to the telescopic cylinder, and a drive assembly is installed in the pulley for driving the movement of the telescopic cylinder. The drive assembly includes a rotating shaft. The backup assembly includes a worm gear portion and a worm portion. The worm gear portion is installed on the rotating shaft, the worm portion is installed at a preset distance from the worm gear portion, and the worm portion has a first adjustment portion and a second adjustment portion. The first adjustment portion can be operated to engage the worm portion with the worm gear portion, and the second adjustment portion can be operated to drive the worm gear portion through the worm portion and then drive the rotating shaft to move.

[0007] Exemplary embodiments of the present invention provide an X-ray imaging system. The X-ray imaging system includes a suspension device. The suspension device includes a set of vertically installed guide rails, a pulley, and a telescopic cylinder. The guide rails are installed on the ceiling, the pulley is installed on the guide rails, the pulley is connected to the telescopic cylinder, and a drive assembly is installed in the pulley for driving the movement of the telescopic cylinder. The drive assembly includes a rotating shaft. The backup assembly includes a worm gear portion and a worm portion. The worm gear portion is installed on the rotating shaft, the worm portion is installed at a preset distance from the worm gear portion, and the worm portion has a first adjustment portion and a second adjustment portion. The first adjustment portion can be operated to engage the worm portion with the worm gear portion, and the second adjustment portion can be operated to drive the worm gear portion through the worm portion and then drive the rotating shaft to move.

[0008] Other features and aspects will become apparent through the following detailed description, the drawings, and the claims. Description of the Drawings

[0009] The present invention can be better understood by describing exemplary embodiments of the present invention in conjunction with the drawings. In the drawings:

[0010] Figure 1 is a schematic diagram of an X-ray imaging system according to some embodiments of the present application;

[0011] Figure 2 is a schematic diagram of a pulley according to some embodiments of the present application;

[0012] Figure 3 is a schematic diagram of a drive assembly and a backup assembly according to some embodiments of the present application;

[0013] Figure 4 is a schematic diagram of the backup assembly in a first state according to some embodiments of the present application;

[0014] Figure 5 is a schematic diagram of a spare component in a second state according to some embodiments of the present application;

[0015] Figure 6 is a schematic diagram of a drive component according to some embodiments of the present application;

[0016] Figure 7 is a schematic diagram of a wire rope fixing bracket in a first position according to some embodiments of the present application;

[0017] Figure 8 is a schematic diagram of the wire rope fixing bracket in a second position according to some embodiments of the present application; and

[0018] Figure 9 is a cross-sectional schematic diagram of a safety locking mechanism according to some embodiments of the present application. Detailed implementation manners

[0019] The following will describe the detailed implementation manners of the present invention. It should be noted that in the specific description process of these implementation manners, for the sake of concise description, this specification cannot describe all features of the actual implementation manners in detail. It should be understood that in the actual implementation process of any implementation manner, just as in the process of any engineering project or design project, in order to achieve the specific goals of the developer and to meet system-related or business-related restrictions, various specific decisions are often made, and these will also change from one implementation manner to another. In addition, it should also be understood that although the efforts made in this development process may be complex and lengthy, for those of ordinary skill in the art related to the content disclosed in the present invention, some design, manufacturing, or production changes based on the technical content disclosed in this disclosure are only conventional technical means and should not be understood as the content of this disclosure being insufficient.

[0020] Unless otherwise defined, technical terms or scientific terms used in the claims and the specification shall have the ordinary meanings as understood by those of ordinary skill in the technical field to which the present invention pertains. The terms "first", "second" and similar terms used in the specification and claims of this patent application for the invention do not denote any order, quantity or importance, but are merely used to distinguish different components. The terms such as "a" or "an" do not denote a limitation of quantity, but rather denote the presence of at least one. The terms such as "comprising" or "including" mean that the elements or items appearing before "comprising" or "including" cover the elements or items listed after "comprising" or "including" and their equivalent elements, without excluding other elements or items. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, nor are they limited to direct or indirect connections.

[0021] Figure 1 shows an X-ray imaging system 100 according to some embodiments of the present invention, Figure 2 shows a schematic diagram of a pulley of a suspension device according to some embodiments of the present invention. As Figures 1 to 2 shown, the X-ray imaging system 100 includes a suspension device 110, a wall stand device 120, and a detection bed device 130. The suspension device 110 includes a set of vertically installed guide rails, a telescopic cylinder 113, a pulley 114, and a tube assembly 115.

[0022] For the sake of convenience of description, in this application, the x-axis, y-axis and z-axis are defined such that the x-axis and y-axis are located in a horizontal plane and perpendicular to each other, and the z-axis is perpendicular to the horizontal plane. Specifically, the direction in which the longitudinal guide rail 111 is located is defined as the x-axis, the direction in which the transverse guide rail 112 is located is defined as the y-axis direction, and the extending direction of the telescopic cylinder 113 is defined as the z-axis direction, and the z-axis direction is the vertical direction.

[0023] A set of guide rails includes a vertically arranged longitudinal guide rail 111 and a transverse guide rail 112. Among them, the longitudinal guide rail 111 is installed on the ceiling, and the transverse guide rail 112 is installed on the longitudinal guide rail 111. The pulley 114 is arranged between the transverse guide rail 112 and the telescopic cylinder 113, and the telescopic cylinder 113 is used to carry the tube assembly 115. The telescopic cylinder 113 includes a plurality of cylindrical shapes with different inner diameters, and the plurality of cylindrical shapes can be sleeved in the cylindrical shape located above it in sequence from bottom to top to achieve telescoping. The telescopic cylinder 113 can be telescoped (or moved) in the vertical direction, that is, the telescopic cylinder 113 can drive the tube assembly to move along the z-axis direction.

[0024] The tube assembly 115 includes an X-ray tube that can generate X-rays and project the X-rays toward the intended region of interest (ROI) of a patient. Specifically, the X-ray tube can be positioned adjacent to a collimator 117 that is configured to direct the X-rays onto the intended region of interest of the patient. At least a portion of the X-rays can be attenuated by the patient and can impinge on the detectors 121 / 131.

[0025] The suspension device 110 further includes a tube controller 116 that is mounted on the tube assembly. The tube controller 116 includes a display screen and user interfaces such as control buttons for performing pre-shot preparations, such as patient selection, protocol selection, and positioning.

[0026] The column device 120 includes a first detector assembly 121, a column 122, and a connecting portion 123. The connecting portion 123 includes a support arm that is perpendicularly connected to the height direction of the column 122 and a rotating bracket mounted on the support arm. The first detector assembly 121 is mounted on the rotating bracket. The column device 120 further includes a detector driving device disposed between the rotating bracket and the first detector assembly 121. Under the drive of the detector driving device, on the plane supported by the rotating bracket, it moves along a direction parallel to the height direction of the column 122. The first detector assembly 121 can further rotate relative to the support arm and form a certain angle with the column. The first detector assembly 121 has a plate-like structure with a variable orientation so that the X-ray incident surface can be made perpendicular or horizontal according to the incident direction of the X-rays.

[0027] The examination table device 130 includes a second detector assembly 131. The selection or use of the first detector assembly 121 and the second detector assembly 131 can be determined based on the patient's examination site and / or examination protocol, or can be determined based on the position of the object to be detected obtained by camera shooting for performing supine or standing position examination. Figure 1 Only an example diagram of the column and the examination table is shown. Those skilled in the art should understand that columns and / or examination tables in any form or arrangement can be selected, or only columns can be installed. The columns and / or examination tables do not limit the overall solution of this application.

[0028] The X-ray imaging system further includes a control device (not shown in the figure), which can be a main controller located in a control room, a tube controller installed on a suspension device, a movable or portable controller, or any combination of the above. The control device can include a source controller and a detector controller. The source controller is used to command the X-ray source to emit X-rays for image exposure. The detector controller is used to select a suitable detector among multiple detectors and coordinate the control of various detector functions. For example, it automatically selects a corresponding detector according to the position or posture of the object to be detected, or can perform various signal processing and filtering functions. Specifically, it is used for the initial adjustment of the dynamic range, interleaving of digital image data, etc. In some embodiments, the control device can provide power and timing signals for controlling the operation of the X-ray source and the detector.

[0029] In some embodiments, the control device can also be configured to use digital signals to reconstruct one or more desired images and / or determine useful diagnostic information corresponding to the patient. The control device can include one or more dedicated processors, graphics processing units, digital signal processors, microcomputers, microcontrollers, application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other suitable processing devices.

[0030] Of course, the X-ray imaging system can also include other numbers, configurations, or forms of control devices. For example, the control device can be local (e.g., co-located with one or more X-ray imaging systems 100, such as within the same facility and / or the same local network); in other implementations, the control device can be remote and thus can only be accessed via a remote connection (e.g., via the Internet or other available remote access technologies). In a specific implementation, the control device can also be configured in a cloud-like manner and can be accessed and / or used in a manner substantially similar to the way other cloud-based systems are accessed and used.

[0031] In one embodiment, the X-ray imaging system 100 further includes an operator workstation that allows a user to receive and evaluate the reconstructed images and input control instructions (operation signals or control signals). The operator workstation can include a user interface (or user input device), such as a keyboard, a mouse, a voice-activated controller, or some form of an operator interface of any other suitable input device. The operator can input operation signals / control signals to the control device through the user interface.

[0032] The movement of the suspension device 110 includes the movement of the tube assembly along the x-axis, y-axis, and z-axis, as well as the rotation of the tube assembly in the horizontal plane (the rotation axis is parallel or coincident with the z-axis) and in the vertical plane (the rotation axis is parallel to the y-axis). In the above movements, generally, a motor is used to drive a rotating shaft to drive the corresponding components to rotate, thereby realizing the corresponding movement or rotation, and the corresponding control components are generally installed in the trolley 114. The X-ray imaging unit further includes a motion control unit (not shown in the figure), and the motion control unit can control the above movements of the suspension device 110. Further, the motion control unit can receive control signals to control the corresponding components to perform corresponding movements.

[0033] Specifically, the suspension device includes a drive assembly 300. The drive assembly 300 is arranged in the trolley 114. The suspension device further includes a frame structure 310, and the frame structure 310 is used to mount the drive assembly 300. Specifically, the frame structure 310 is formed by bending a processed plate, and the frame structure 310 has a hollow part. The frame structure 310 includes a reinforcement member, and the reinforcement member can divide the hollow part into a first hollow part and a second hollow part.

[0034] The drive assembly 300 may include a rotating shaft 301 arranged in the first hollow part, a drum 302, a motor 303, and components such as synchronous pulleys and synchronous belts. The motor 303 can drive the drum 302 to rotate around the rotating shaft 301 through the synchronous pulleys and synchronous belts, thereby driving the telescopic cylinder 113 to move along the z-axis. The drive assembly 300 may include a balancing device 305 arranged in the second hollow part for counterweighting the telescopic cylinder and / or the tube assembly.

[0035] In some embodiments, the drive assembly 300 further includes steel wire ropes. Among them, the steel wire ropes include a main steel wire rope, a secondary steel wire rope, and a connecting steel wire rope. One end of the main steel wire rope is fixed on the drum 302, and the other end is fixed on the top of the bottom side cylinder shell of the telescopic cylinder 113. One end of the secondary steel wire rope is fixed on the drum 302, and the other end is also fixed on the top of the bottom side cylinder shell of the telescopic cylinder 113. One end of the connecting steel wire rope is fixed on the balancing device 305, and the other end of the steel wire rope is fixed on the drum 302. The motor 303 can drive the drum 302 to rotate to wind or release the steel wire ropes (including the main steel wire rope and the secondary steel wire rope), thereby driving the telescopic cylinder 113 to move up and down.

[0036] A guide rail drive assembly 330 is provided at the junction of the lateral guide rail 112 and the longitudinal guide rail 111. The guide rail drive assembly 330 is installed at the bottom of the longitudinal guide rail 111 and the side of the lateral guide rail 112. The guide rail drive assembly 330 can drive the lateral guide rail 112 to move relative to the longitudinal guide rail 111, thereby driving the telescopic cylinder 113 and the tube assembly 115 to move along the x-axis direction.

[0037] The pulley 114 further includes a short-axis drive assembly 340 installed outside the frame structure 310. The short-axis drive assembly 340 can drive the pulley 114 to move relative to the transverse guide 112, that is, move along the y-axis direction. The short-axis drive assembly 340 includes components such as a motor, a synchronous belt, and an encoder.

[0038] Since the drive assemblies that control the movement of the suspension device are basically arranged inside the pulley, when a certain part or component in the drive assembly fails, the suspension device will immediately stop moving and remain in its current position. At this time, on-site engineers need to conduct inspections and repairs. Especially during the repair process, for example, when replacing cables, replacing the balance device, or replacing components in the tube assembly, it is necessary to remove the telescopic cylinder, the tube assembly, or the balance device, and then reinstall them on the suspension device after replacement. Components such as the telescopic cylinder and the tube assembly are relatively heavy, and a hoisting mechanism is required to remove, replace, and reinstall each component. The cost and time required for the entire process are unpredictable.

[0039] Furthermore, on-site engineers need to troubleshoot the cause of the failure and order the required spare parts. Only after receiving the new replaceable spare parts can they be replaced. The time required for this process is also unpredictable. Usually, after a suspension device fails, its height or position cannot be adjusted anymore, so the existing shooting tasks cannot be completed, which affects the shooting progress for the hospital.

[0040] Based on the above problems, the present application proposes a spare component. The spare component can be installed adjacent to the rotating shaft of the drive assembly. The spare component includes a worm gear and a worm. The worm gear is installed on the rotating shaft and can rotate with the rotating shaft. The worm is installed on the bracket of the drive assembly and is at a certain distance from the worm gear. When the drive assembly is working normally, there is a certain distance between the worm gear and the worm, and they do not interfere with each other. The worm gear can rotate with the rotating shaft. When the drive assembly fails, the worm can be adjusted to move a preset distance towards the worm gear, so that the worm gear and the worm mesh. Then, by rotating the worm, the worm gear can be driven to rotate through meshing, and then the rotating shaft can be driven to rotate to drive components such as the telescopic cylinder to move. Therefore, by installing a worm gear and worm assembly on the drive assembly, when the drive assembly fails, the telescopic cylinder, the balance device, and other components can be lowered in height without a hoisting mechanism, so as to carry out repairs and replacements. Moreover, during the waiting period for repairs, the suspension device can be adjusted to an appropriate height to perform certain simple shootings. The entire worm gear and worm assembly not only has a small volume and does not occupy space, but also has a low cost and is convenient for maintenance.

[0041] Figure 3 FIG. shows a schematic diagram of a spare component 200 according to some embodiments of the present invention. Figure 4Shows a schematic diagram of the spare component 200 in the first state according to some embodiments of the present invention. Figure 5 Shows a schematic diagram of the spare component 200 in the second state according to some embodiments of the present invention. As Figures 3 to 5 Shown, the spare component 200 includes a worm wheel part 210 and a worm part 220. The worm wheel part 210 is installed on the rotating shaft 301, and the worm part 220 is installed at a preset distance from the worm wheel part 210. The worm part 220 has a first adjusting part 221 and a second adjusting part 222. The first adjusting part 221 can be operated to engage the worm part 220 with the worm wheel part 210, and the second adjusting part 222 can be operated to drive the worm wheel part 210 through the worm part 220 and then drive the rotating shaft 301 to move.

[0042] In some embodiments, the worm wheel part 210 is installed adjacent to the rotating shaft 301. Specifically, the worm wheel part 210 is installed at the position closest to the drum 302. For example, the worm wheel part is installed closer to the drum 302 compared to the synchronous pulley 304 and the clutch. Such an installation method will result in a smaller offset of the worm wheel part.

[0043] In some embodiments, the worm part 220 is installed on the side of the worm wheel part 210, and the second adjusting part 222 is located at the bottom of the worm part 220. Specifically, the worm part 220 can be installed on any side of the worm wheel part 210. For example, it can be installed at the bottom, top, or left and right sides of the worm wheel part. The position of the second adjusting part 222 can be determined according to whether it is convenient for the operator to operate. For example, when the worm part 220 is installed on the left and right sides of the worm wheel part 210, the second adjusting part can be installed at the bottom of the worm part to facilitate the operator to control the worm wheel part through the second adjusting part.

[0044] In some embodiments, the worm part 220 further has a body 223. The second adjusting part 222 is installed at the bottom of the body 223, or the second adjusting part 222 can be fixed by passing through a part of the body 223. The second adjusting part 222 can be operated to rotate the body 223. Threads are provided on the body 223, and these threads can be meshed with the worm wheel part 210. That is, the second adjusting part 222 can be operated to rotate the threads.

[0045] The worm part 220 is fixed to the frame structure 310 through a worm frame 230. In some embodiments, the worm frame 230 is generally U-shaped, which includes side walls and a top surface and a bottom surface connected to both ends of the side walls. The body 223 is fixed between the bottom surface and the top surface of the U-shaped worm frame 230. The second adjusting part 222 is fixed to the bottom surface of the U-shaped worm frame 230.

[0046] The first adjusting part 221 can abut against the side wall of the U-shaped worm frame 230 through the frame structure 310, that is, one end of the first adjusting part 221 contacts the outer side wall of the worm frame 230. Specifically, the first adjusting part 221 can be operated to move the worm frame 230 towards the worm wheel part 210, and then drive the main body 223 and the second adjusting part 222 towards the worm wheel part 210, so that the worm wheel part 210 and the worm part 220 are engaged. Specifically, the first adjusting part 221 can be a screw, and the distance between the screw and the frame structure 310 is approximately equal to the distance between the main body 223 of the worm part 220 and the worm wheel part 210.

[0047] In some embodiments, the worm part 220 further includes a limiting device 224, which can be arranged on the worm frame 230 and can limit the maximum distance of the movement of the worm frame 230, that is, the limit position of the worm frame 230. The limiting device 224 includes a limiting groove and a screw. In the initial position, the first adjusting part 221 has a preset distance from the frame structure 310, and the screw is located at the first position of the limiting groove. At this time, the worm wheel part 210 and the worm part 220 also have a preset distance. When the first adjusting part 221 is operated to move the worm part 220 towards the worm wheel part 210, when the screw is located at the second position of the limiting groove, at this time, the worm wheel part 210 and the worm part 220 can just be engaged. Specifically, the worm part 220 includes two groups of limiting devices, which are respectively installed on the top surface and the bottom surface of the worm frame 230.

[0048] Specifically, the second adjusting part can control the movement of the rotating shaft when the driving component fails, and then drive the movement of the component connected to the rotating shaft.

[0049] In some embodiments, the spare component 200 has a first state and a second state. In the first state, there is a preset distance between the worm wheel part 210 and the worm part 220, and the two do not interfere with each other. The worm wheel part 210 can rotate following the rotating shaft 301, the winding drum 302, etc. In the second state, at this time, some or certain components in the driving component 300 of the suspension device or the telescopic cylinder 113 have obstacles, the suspension device stops moving, the worm part 220 can be moved (by adjusting the first adjusting part 221) to be engaged with the worm wheel part 210, and the second adjusting part 222 of the worm part 220 can be adjusted to rotate the worm wheel part 210, and then drive the rotating shaft 301 and the winding drum 302 to rotate, and then drive the driving component 300 to move.

[0050] In some embodiments, the adjustment or control of the second adjustment part 222 can be manually operated through components such as a wrench or a screw, or can be completed through the operation of equipment such as an electric wrench or an electric instrument. In some embodiments, the adjustment or control of the first adjustment part 221 can be manually operated by an operator, or can be automatically controlled by a control signal of a controller. For example, when a failure occurs in the drive assembly, the controller can send a control signal to the first adjustment part 221, and then control the movement of the first adjustment part 221 to achieve meshing.

[0051] In some embodiments, the spare component 200 can be used to drive the rotating shaft 301 to drive the telescopic cylinder 113 to lift. In other embodiments, the spare component 200 can be used to drive the rotating shaft 301 to drive the balance device to lift. The following describes these two embodiments separately.

[0052] First, in some embodiments, the second adjustment part of the worm part can be operated to drive the lifting of the telescopic cylinder. Specifically, when the drive assembly fails and the telescopic cylinder needs to be lifted, the following steps can be taken for operation: First, the first adjustment part of the worm part can be adjusted to make the worm part and the worm wheel part mesh; then, the second adjustment part can be adjusted to make the telescopic cylinder reach the topmost position. At this position, all the cylinder outer shells of the telescopic cylinder are contracted together. There are fixing holes on the cylinder outer shell. By inserting a fixing pin into the cylinder outer shell, the relative positions between multiple cylinder outer shells can be fixed, that is, the telescopic cylinder can no longer be telescoped, which is convenient for subsequent lifting and replacement; then, the screw or other fixing parts between the top of the telescopic cylinder and the pulley are untied. At this time, the weight of the telescopic cylinder is borne by the main wire rope and the auxiliary wire rope; furthermore, the second adjustment part of the worm part is driven so that the whole telescopic cylinder can be lowered, and then the components are replaced; finally, the repaired telescopic cylinder can be lifted to the topmost position by adjusting the second adjustment part, and the telescopic cylinder is fixed on the pulley again, and the fixing pin is pulled out, so that the whole repair and replacement work of the telescopic cylinder is completed. In this process, the lifting of the telescopic cylinder can be realized without a hoisting mechanism.

[0053] In other embodiments, when the drive assembly fails and the new parts or components have not arrived yet, during this process, the telescopic cylinder can be directly adjusted to an appropriate height by adjusting the second adjustment part to perform some simple shooting, so that some shooting can still be carried out during the waiting for repair, and the shooting process will not be completely delayed.

[0054] In some other embodiments, when the tube assembly needs to be replaced, it can also be controlled by a spare component. Specifically: First, move the telescopic cylinder to an appropriate height through the second adjustment part; then, remove the tube assembly from the telescopic cylinder; next, when a new tube assembly needs to be reinstalled, the tube assembly can be placed at a fixed position, and then adjust the position of the telescopic cylinder by adjusting the second adjustment part to align it with the tube assembly, thereby completing the assembly. Such a process does not require aligning the tube assembly with the telescopic cylinder, and the labor and material resources consumed by adjusting the position of the tube assembly can be saved.

[0055] Furthermore, the second adjustment part of the worm part can be further operated to drive the lifting movement of the balance device. Specifically, when the telescopic cylinder needs to be lifted or lowered due to the failure of the drive component, the following steps can be taken for operation: First, the first adjustment part of the worm part can be adjusted to make the worm part engage with the worm wheel part; then, the second adjustment part is adjusted to make the telescopic cylinder reach the topmost position, and a fixing pin is inserted into the cylinder housing; then, the steel wire ropes (including the main steel wire rope and the auxiliary steel wire rope) between the winding drum and the telescopic cylinder are untied. The steel wire ropes can be fixed at a certain position or completely removed; next, the auxiliary steel wire rope or other new steel wire ropes are fixed between the winding drum and the balance device, or directly use the original steel wire rope between the winding drum and the balance device. One end of the steel wire rope is fixed on the winding drum, and the other end is fixed on the balance device through the suspension point on the bracket of the balance device, which will be described in detail later; then, the screws or other fixing parts between the balance device and the frame structure or the pulley are untied; furthermore, the second adjustment part of the worm part is driven so that the whole balance device can be lowered, and then the components are replaced; finally, the second adjustment part is adjusted so that the new balance device can be raised to the topmost position, the balance device is fixed on the frame structure or the pulley again, and the steel wire rope between the telescopic cylinder and the winding drum is replaced or installed, thus completing the repair and replacement work of the whole balance device. In this process, the lifting of the balance device can be achieved without a hoisting tool.

[0056] The spare component proposed in this application can be applied not only to the drive component of the suspension device, but also to the drive components of other types of X-ray imaging systems. Of course, it can also be used on other types of medical devices, including but not limited to, computed tomography (CT) systems, positron emission tomography (PET) systems, magnetic resonance imaging (MRI) systems, etc.

[0057] Figure 6 The schematic diagram of the drive component of some embodiments of this application is shown. As Figure 6As shown, the balancing device 305 includes a mounting bracket 351, and the balancing device 305 can be fixed to the frame structure 310 through the mounting bracket 351. Specifically, the mounting bracket 351 is located at the top of the balancing device 305. For the convenience of lifting the balancing device using spare components, a lifting point 352 and a wire rope fixing part 353 are further provided on the balancing device 305 or the mounting bracket 351.

[0058] Specifically, the lifting point 352 can be provided on the frame structure 310 or on the mounting bracket 351, as long as the lifting point 352 is set in the vertical direction of the center of gravity position of the balancing device. The wire rope fixing part 353 is installed at the top of the mounting bracket 351. The spare wire rope 306 can be fixed to the wire rope fixing part 353 through the lifting point 352 and is used to control the lifting of the balancing device through the second adjusting part. Specifically, the spare wire rope 306 can be the main wire rope, the auxiliary wire rope or other new wire ropes, and the spare wire rope is only used during the process of lifting the balancing device during maintenance.

[0059] Specifically, by setting the lifting point 352, during the process of lifting the balancing device 305, the spare wire rope 306 can be connected to the center of gravity position of the balancing device, and the balancing device will not shake during lifting.

[0060] The wire rope fixing part 353 has a slot and a through hole provided at one end of the slot. The through hole is communicated with the slot. The diameter of the through hole is slightly larger than the width of the slot, and the width of the through hole is determined according to the size of the end of the spare wire rope. Specifically, the end of the spare wire rope 306 has a first protrusion 361 and a second protrusion 362. For example, the first protrusion 361 can be a sphere, and the second protrusion 362 can be a cylinder. The first protrusion 361 is closer to the end of the spare wire rope than the second protrusion 362, and the first protrusion 361 has a larger diameter than the second protrusion 362. Moreover, the width of the slot of the wire rope fixing part 353 is smaller than the diameter of the first protrusion 361 and larger than the diameter of the second protrusion 362. The width of the through hole of the wire rope fixing part 353 is larger than the diameter of the first protrusion 361. Through such a setting, the whole of the first protrusion 361 and the second protrusion 362 of the spare wire rope 306 can be placed into the through hole, and then the wire rope is moved into the slot. Since the diameter of the first protrusion 361 is larger than the width of the slot, the first protrusion 361 is stuck at the bottom of the slot, and thus the wire rope can be fixed.

[0061] Generally, the end of the slot in the wire rope fixing part 353 away from the through hole is in the same vertical direction as the lifting point 352.

[0062] Therefore, by providing a lifting point and a wire rope fixing part on the balancing device or the mounting bracket or frame structure of the balancing device, not only can the wire rope be fixed at the center of gravity position of the balancing device, so that the balancing device does not generate large swings during the lifting and lowering process, but also the fixing of the wire rope can be achieved through the structural design without the need for other fixing methods such as screws.

[0063] The above embodiments describe a solution in which a main wire rope and a secondary wire rope are respectively connected between the winding drum and the telescopic cylinder, and a connecting wire rope is provided between the winding drum and the balancing device. In order to further save costs, the drive assembly can also use one less wire rope and adopt a direct connection wire rope solution. Specifically, one end of the main wire rope can be fixed to the top of the lowermost cylinder housing of the telescopic cylinder, and the other end is connected to the balancing device after winding around the winding drum. One end of the secondary wire rope is fixed to the winding drum, and the other end is fixed to the top of the lowermost cylinder housing of the telescopic cylinder.

[0064] In some embodiments, the main wire rope and the secondary wire rope can be wound around the winding drum at intervals, or the main wire rope is wound around one end of the winding drum, and the secondary wire rope is wound around the other end of the winding drum. Specifically, the main wire rope can be wound around one end close to the worm gear part, while the secondary wire rope is wound around the other end of the winding drum. Of course, this direction can also be interchanged, and the present application does not limit this.

[0065] Figure 7 Fig. shows a schematic diagram of the wire rope fixing bracket 400 in the first position according to some embodiments of the present application. Figure 8 Fig. shows a schematic diagram of the wire rope fixing bracket 400 in the second position according to some embodiments of the present application. As Figures 6 to 8 shown, the drive assembly includes a main wire rope 371 and a secondary wire rope 372. Among them, one end of the main wire rope 371 is fixed to the lowermost cylinder housing of the telescopic cylinder through the wire rope fixing bracket 400, and the other end is fixed inside the balancing device through the winding drum 302 (such as the wire rope 371 shown in Figure 6 Fig.), while one end of the secondary wire rope 372 is fixed to the wire rope fixing bracket 400, and the other end is fixed to the winding drum 302.

[0066] In some embodiments, an installation groove is provided on the side surface of the winding drum 302 for winding one end of the secondary wire rope 372, and a spring is installed at one end of the secondary wire rope 372. The end of the secondary wire rope 372 with the spring is fixed in the installation groove of the winding drum. By providing the spring, the secondary wire rope can be in a non-tension state and thus bear the weight, and when the main wire rope breaks, the secondary wire rope can then bear the weight. Specifically, the secondary wire rope with the spring can be fixed in the installation groove in any suitable manner, for example, in the form of a hook, a screw fixing method, etc.

[0067] Specifically, the wire rope fixing bracket 400 is fixed inside the lowermost cylinder housing. Specifically, it can be fixed inside the lowermost cylinder housing near the top. The cross-section of the wire rope fixing bracket 400 is generally circular or hexagonal. Of course, it can also be set in other shapes as long as it matches the cross-sectional shape of the cylinder housing.

[0068] In some embodiments, the wire rope fixing bracket 400 includes a main body and a cover plate. The main body includes at least one opening for accommodating the wire rope. The cover plate can be moved relative to the main body to cover at least a part of the opening to fix the position of the wire rope.

[0069] Same as Figure 6 the end structure of the wire rope shown, the ends of the main wire rope and the auxiliary wire rope connected to the telescopic cylinder also have a first protrusion and a second protrusion.

[0070] Specifically, the main wire rope fixing part 410 and the auxiliary wire rope fixing part 420 are provided on the main body. Same as Figure 6 the structure of the wire rope fixing part 353 provided on the balance device shown, both the main wire rope fixing part 410 and the auxiliary wire rope fixing part 420 include a slot and a through hole provided at one end of the slot. Specifically, the main wire rope fixing part 410 includes a first slot 411 and a first through hole 412, and the auxiliary wire rope fixing part 420 includes a second slot 421 and a second through hole 422. Among them, the first through hole 412 and the second through hole 422 are arranged adjacent to each other. The first protrusion and the second protrusion provided at the end of the main wire rope 371 can enter the first through hole 412 and then slide into the other end of the first slot 411. Since the width of the first slot 411 is smaller than the diameter of the first protrusion of the main wire rope and larger than the diameter of the second protrusion, the main wire rope fixing part 410 can fix the main wire rope 371 in the vertical direction. Similarly, the protrusion provided at the end of the auxiliary wire rope 372 can enter the second through hole 422 and then slide into the other end of the second slot 421, thereby fixing the auxiliary wire rope in the vertical direction.

[0071] Furthermore, in order to fix the main wire rope 371 and the auxiliary wire rope 372 in the horizontal direction, a cover plate 430 is further added to the main body provided with the main wire rope fixing part 410 and the auxiliary wire rope fixing part 420. The cover plate 430 is located on one side of the main wire rope fixing part 410 and the auxiliary wire rope fixing part 420. The cover plate 430 can be moved to fix the main wire rope 371 and the auxiliary wire rope 372 in the horizontal direction so that they cannot slide relative to the slot.

[0072] Specifically, the cover plate 430 is generally strip-shaped, and there are two grooves near the end position on one side of the cover plate 430, and the size of the grooves is determined by the thickness (i.e., diameter) of the wire rope. For the convenience of description, the end of the first slot 411 far from the first through hole 412 and the end of the second slot 421 far from the second through hole 422 are defined as the end positions.

[0073] In some embodiments, the cover plate 430 has a first position and a second position. Among them, in the first position, the first slot 411, the first through hole 412, the second slot 421, and the second through hole 422 can all be displayed to facilitate the operator to install and replace the wire rope. In the second position, the cover plate 430 is moved to cover most of the first slot 411, the first through hole 412, the second slot 421, and the second through hole 422, and only the wire rope is retained in the groove, thereby fixing the wire rope in the horizontal direction.

[0074] In some embodiments, the cover plate 430 further includes at least one limiting strip 431, and the limiting strip 431 can limit the maximum distance that the cover plate 430 can move, that is, it can limit the first position and the second position where the cover plate 430 is located. Specifically, the limiting strip 431 includes a limiting groove and a screw. The position of the screw is fixed, and the cover plate can move from one end of the limiting groove to the other end, that is, the switching of the cover plate 430 from the first position to the second position or from the second position to the first position is realized.

[0075] Further referring to Figure 6 , the drive assembly further includes a position feedback unit for performing position feedback on the movement in the vertical direction. In some embodiments, the position feedback unit may include an encoder 308, and the encoder 308 may be installed at one end of the rotating shaft 301 to perform position feedback by monitoring the rotation of the rotating shaft.

[0076] In some other embodiments, the position feedback unit may include a linear encoder (not shown in the figure). The linear encoder can be installed at any position of the frame structure. For example, it can be installed on the frame structure near the motor, or on the frame structure between the drum and the motor. The linear encoder includes a connecting wire. One end of the connecting wire is fixed inside the linear encoder, and the other end can be installed on the outer shell of the lowest side of the telescopic cylinder. For example, it can be installed on the wire rope fixing bracket as shown in Figure 7 . That is to say, as the telescopic cylinder moves in the vertical direction, the connecting wire can be pulled out or displaced. Therefore, the linear encoder can feedback the movement distance in the vertical direction by the distance that the connecting wire is pulled out or displaced.

[0077] Figure 9 shows a cross-sectional view of the safety locking mechanism according to some embodiments of the present application. AsFigure 6 and Figure 9 As shown in Figure 9 , in some embodiments, the drive assembly 300 further includes a ratchet wheel 309 installed at one end of the reel 302. In some embodiments, the ratchet wheel 309 is positioned closer to the reel than the worm wheel portion 210. Specifically, components such as the ratchet wheel 309, the worm wheel portion 210, the synchronous pulley, and the clutch can be arranged in a direction from closer to the reel to farther from the reel.

[0078] The drive assembly 300 further includes a safety locking mechanism 500. The safety locking mechanism 500 is installed adjacent to the ratchet wheel 309 and can engage with the ratchet wheel 309 to lock the rotating shaft 301 when the main wire rope 371 breaks.

[0079] Specifically, the safety locking mechanism 500 includes a rotating portion 510 and an extending portion 520. The extending portion 520 is connected to the rotating portion 510, and a gear 511 is provided at the end of the rotating portion 510, and the gear 511 can engage with the ratchet wheel 309.

[0080] Specifically, the rotating portion 510 is fixed to the frame structure 310, and the rotating portion 510 can rotate relative to the frame structure 310 and is positioned to be biased towards the ratchet wheel 309. Specifically, the rotating portion 510 can also be fixed to the frame structure 310 by a spring.

[0081] The extending portion 520 is positioned along the length direction of the rotating shaft 301, and the plane where the extending portion 520 is located is perpendicular to the plane where the rotating portion 510 is located. The extending portion 520 can be fixed on the wire ropes of the reel and the balance device, and the extending portion 520 can contact the wire rope. The wire rope can provide certain support to the extending portion 520. By contacting the wire rope with the extending portion 520, the rotating portion 510 is positioned at a certain distance from the ratchet wheel 309, so that the rotating portion 510 and the ratchet wheel 309 do not interfere with each other. When the wire rope breaks or other failures occur, the extending portion 520 loses support. Under the action of the spring or gravity, the rotating portion 510 also loses support and will rotate towards the ratchet wheel 309, so that the gear 511 provided at the end of the rotating portion 510 engages with the ratchet wheel 309, thereby locking the rotating shaft 301.

[0082] The safety locking mechanism 500 further includes an adjusting unit 530, which can be arranged at the connection of the rotating part 510 and the extending part 520, and the adjusting unit 530 can be used to adjust the preset distance between the gear 511 and the ratchet wheel 309. Specifically, the adjusting unit 530 includes an adjusting groove and a screw. By adjusting the position of the screw in the adjusting groove, the distance between the gear and the ratchet wheel can be adjusted. By setting the adjusting unit, the distance between the gear 511 and the ratchet wheel 309 can be minimized without hindering the rotation of the ratchet wheel, so that the triggering distance of the safety locking mechanism is the shortest, that is, when the main wire rope breaks, the safety locking mechanism can be triggered in the shortest time to lock the rotating shaft.

[0083] Therefore, by arranging a rotating part with a gear near the ratchet wheel and an extending part supported by the wire rope, the rotating shaft can be self-locked in the case of wire rope breakage, thus improving the safety of the whole suspension device.

[0084] The spare components of some embodiments of the present invention include a worm gear and a worm. The worm gear can rotate together with the rotating shaft. When the driving component fails, the worm can be moved to mesh with the worm gear, thereby locking the rotating shaft to prevent displacement. Moreover, a second adjusting part is arranged on the worm. The operator can control the rotation of the rotating shaft through the second adjusting part, thereby lifting and lowering the telescopic cylinder and the balancing device, saving the time and cost of lifting with a hoisting tool, etc. Moreover, during the process of waiting for new spare parts for repair when the driving component fails, the operator can adjust the telescopic cylinder to an appropriate height by operating the second adjusting part, so that the suspension device can still perform some simple shootings to meet certain shooting needs.

[0085] Moreover, some improvements are also made to the driving component in this application. The main wire rope is directly fixed between the telescopic cylinder and the balancing device by means of direct connection of the wire rope, saving the cost of one wire rope. Moreover, by installing a wire rope fixing bracket inside the lowest cylinder housing of the telescopic cylinder, it can be used to fix the wire rope. For example, by designing the shape of the end of the wire rope and setting the shape of the opening, the wire rope can be fixed in the vertical direction, and then by moving the position of the cover plate, the wire rope can be clamped in the groove, thereby fixing the wire rope in the horizontal direction. The structure is simple and the cost is low. Finally, a safety locking mechanism is arranged on the driving component, which can lock the rotating shaft when the wire rope breaks to prevent its displacement and so on.

[0086] Exemplary embodiments of the present application provide a backup component for a medical imaging system. The medical imaging system includes a drive component, the drive component includes a rotating shaft, the backup component includes a worm gear portion and a worm portion, the worm gear portion is mounted on the rotating shaft, the worm portion is mounted at a preset distance from the worm gear portion, and the worm portion has a first adjustment portion and a second adjustment portion. The first adjustment portion can be operated to engage the worm portion with the worm gear portion, and the second adjustment portion can be operated to drive the worm gear portion through the worm portion and then drive the rotating shaft to move.

[0087] Specifically, the second adjustment portion can control the movement of the rotating shaft when the drive component fails, and then drive the movement of the component connected to the rotating shaft.

[0088] Specifically, the worm portion is mounted on the side of the worm gear portion, and the second adjustment portion is located at the bottom of the worm portion.

[0089] Specifically, the medical imaging system includes a suspension device, the suspension device includes a set of vertically installed guide rails, a trolley, and a telescopic cylinder. The guide rails are installed on the ceiling, the trolley is installed on the guide rails, the trolley is connected to the telescopic cylinder, the drive component is installed in the trolley for driving the movement of the telescopic cylinder, and the second adjustment portion of the worm portion can be operated to drive the lifting of the telescopic cylinder.

[0090] Specifically, the drive component further includes a balancing device, and the second adjustment portion of the worm portion can be further operated to drive the lifting movement of the balancing device.

[0091] Specifically, a wire rope fixing portion and a suspension point are provided at the top of the balancing device. The suspension point is provided at the center of gravity position of the balancing device. The wire rope can be fixed to the wire rope fixing portion through the suspension point for controlling the lifting of the balancing device through the second adjustment portion.

[0092] Exemplary embodiments of the present application provide a suspension device. The suspension device includes a set of vertically installed guide rails, a pulley, and a telescopic cylinder. The guide rails are installed on the ceiling, the pulley is installed on the guide rails, the pulley is connected to the telescopic cylinder, and a drive assembly is installed in the pulley for driving the movement of the telescopic cylinder. The drive assembly includes a rotating shaft. The backup assembly includes a worm gear portion and a worm portion. The worm gear portion is installed on the rotating shaft, the worm portion is installed at a preset distance from the worm gear portion, and the worm portion has a first adjustment portion and a second adjustment portion. The first adjustment portion can be operated to engage the worm portion with the worm gear portion, and the second adjustment portion can be operated to drive the worm gear portion through the worm portion and then drive the rotating shaft to move.

[0093] Specifically, the drive assembly further includes a drum, a main wire rope, and a secondary wire rope. The drum can rotate around the rotating shaft. One end of the main wire rope is fixed to the balancing device, and the other end is fixed to the telescopic cylinder through the drum. One end of the secondary wire rope is fixed to the drum, and the other end is fixed to the telescopic cylinder.

[0094] Specifically, the main wire rope and the secondary wire rope can be wound around the drum at intervals, or the main wire rope is wound at one end of the drum, and the secondary wire rope is wound at the other end of the drum.

[0095] Specifically, the telescopic cylinder includes a plurality of cylinder outer shells sleeved from top to bottom. A wire rope fixing bracket is installed at the top of the lowermost cylinder outer shell. The wire rope fixing bracket includes a main body and a cover plate. The main body includes at least one opening for accommodating the wire rope, and the cover plate can be moved relative to the main body to cover at least a part of the opening to fix the position of the wire rope.

[0096] Specifically, the drive assembly further includes a linear encoder. The linear encoder is installed adjacent to the drum. The linear encoder includes a connecting wire, and the other end of the connecting wire is fixed to the lowermost cylinder outer shell.

[0097] Specifically, a ratchet is provided at one end of the drum. The drive assembly further includes a safety locking mechanism. The safety locking mechanism is installed adjacent to the ratchet and can, when the main wire rope breaks, engage with the ratchet to lock the rotating shaft.

[0098] Specifically, the safety locking mechanism includes a rotating portion and an extension portion. The extension portion is connected to the rotating portion, and a gear is provided at the end of the rotating portion, and the gear can engage with the ratchet.

[0099] Exemplary embodiments of the present application provide an X-ray imaging system. The X-ray imaging system includes a suspension device, the suspension device includes a set of vertically installed guide rails, a trolley, and a telescopic cylinder. The guide rails are installed on the ceiling, the trolley is installed on the guide rails, the trolley is connected to the telescopic cylinder, and a drive assembly is installed in the trolley for driving the movement of the telescopic cylinder. The drive assembly includes a rotating shaft. The spare assembly includes a worm wheel part and a worm part. The worm wheel part is installed on the rotating shaft, the worm part is installed at a preset distance from the worm wheel part, and the worm part has a first adjustment part and a second adjustment part. The first adjustment part can be operated to engage the worm part with the worm wheel part, and the second adjustment part can be operated to drive the worm wheel part through the worm part and then drive the rotating shaft to move.

[0100] Some exemplary embodiments have been described above. However, it should be understood that various modifications can be made. For example, suitable results can be achieved if the described techniques are performed in a different order and / or if the components in the described system, architecture, device, or circuit are combined in a different manner and / or replaced or supplemented by other components or their equivalents. Accordingly, other embodiments also fall within the scope of protection of the claims.

Claims

1. A spare component of a medical imaging system, the medical imaging system including a drive component, the drive component including a rotating shaft, the spare component including: a worm gear portion mounted on the rotating shaft; and a worm portion mounted at a preset distance from the worm gear portion, and the worm portion having a first adjustment portion and a second adjustment portion, the first adjustment portion being operable to engage the worm portion with the worm gear portion, and the second adjustment portion being operable to drive the worm gear portion through the worm portion and thereby drive the movement of the rotating shaft.

2. The spare component according to claim 1, wherein, The second adjustment portion is capable of controlling the movement of the rotating shaft when the drive component fails, and thereby driving the movement of the component connected to the rotating shaft.

3. The spare component according to claim 1, wherein, The worm portion is mounted on the side of the worm gear portion, and the second adjustment portion is located at the bottom of the worm portion.

4. The spare component according to claim 1, wherein, The medical imaging system includes a suspension device, the suspension device including a set of vertically mounted guide rails, a trolley, and a telescopic cylinder, the guide rails being mounted on the ceiling, the trolley being mounted on the guide rails, the trolley being connected to the telescopic cylinder, the drive component being mounted in the trolley for driving the movement of the telescopic cylinder, and the second adjustment portion of the worm portion being operable to drive the lifting of the telescopic cylinder.

5. The spare component according to claim 4, wherein, The drive component further includes a balancing device, and the second adjustment portion of the worm portion is further operable to drive the lifting movement of the balancing device.

6. The spare component according to claim 5, wherein, The top of the balancing device is provided with a wire rope fixing portion and a suspension point, the suspension point being provided at the center of gravity position of the balancing device, and a wire rope can be fixed to the wire rope fixing portion through the suspension point for controlling the lifting of the balancing device through the second adjustment portion.

7. A suspension device, the suspension device including a set of vertically mounted guide rails, a trolley, and a telescopic cylinder, the guide rails being mounted on the ceiling, the trolley being mounted on the guide rails, the trolley being connected to the telescopic cylinder, the drive component being mounted in the trolley for driving the movement of the telescopic cylinder, and the suspension device further including the spare component according to any one of claims 1 to 6.

8. The suspension device according to claim 7, wherein, The drive component further includes: a drum capable of rotating around the rotating shaft; a main wire rope, one end of which is fixed to the balancing device and the other end of which is fixed to the telescopic cylinder through the drum; and a secondary wire rope, one end of which is fixed to the drum and the other end of which is fixed to the telescopic cylinder.

9. The suspension device according to claim 8, wherein, The main wire rope and the secondary wire rope can be wound around the drum at intervals, or the main wire rope is wound around one end of the drum and the secondary wire rope is wound around the other end of the drum.

10. The suspension device according to claim 8, wherein, The telescopic cylinder includes a plurality of cylinder outer shells sleeved from top to bottom, wherein a wire rope fixing bracket is mounted on the top of the lowermost cylinder outer shell, the wire rope fixing bracket including a main part and a cover plate, the main part including at least one opening for accommodating the wire rope, and the cover plate being movable relative to the main part to cover at least a part of the opening to fix the position of the wire rope.

11. The suspension device according to claim 10, wherein, The drive assembly further includes a wire encoder, the wire encoder is mounted adjacent to the reel, the wire encoder includes a connecting wire, and the other end of the connecting wire is fixed to the lowermost reel housing.

12. The suspension device according to claim 8, wherein, One end of the reel is provided with a ratchet, the drive assembly further includes a safety locking mechanism, the safety locking mechanism is mounted adjacent to the ratchet, and when the main wire rope breaks, the safety locking mechanism engages with the ratchet to lock the rotating shaft.

13. The suspension device according to claim 12, wherein, The safety locking mechanism includes a rotating part and an extending part, the extending part is connected to the rotating part, and a gear is provided at the end of the rotating part, and the gear can engage with the ratchet.

14. An X-ray imaging system, which includes the suspension device according to any one of claims 7 to 13.

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