Suspension device for X-ray imaging system and X-ray imaging system

Abstract

The utility model provides a suspension device for an X-ray imaging system and the X-ray imaging system. The suspension device is used for suspending an X-ray generating mechanism and comprises a telescopic cylinder and an angle adjusting mechanism. A shell of the angle adjusting mechanism comprises a first part and a second part which are fixedly connected with each other at an angle to form a bent structure, the first part is connected with the telescopic cylinder, and the power source is contained and installed in the first part. An output assembly of the angle adjusting mechanism is provided with a brake and an output shaft, the brake is contained and installed in the second part, one end of the output shaft is connected with the brake, the other end of the output shaft extends out of the second part, and then the output shaft is used for being connected with an X-ray generating mechanism. The belt transmission assembly is contained in the shell, and the belt transmission assembly is in transmission connection with the power source and the output shaft.

Description

Technical Field

[0001] The present application relates to the field of imaging, and more particularly to a suspension device for an X-ray imaging system and an X-ray imaging system including the suspension device. Background Art

[0002] In an X-ray imaging system, X-rays from an X-ray generating mechanism are guided and shot at an object to be imaged to achieve imaging, and the object to be imaged is usually a patient in medical diagnosis applications.

[0003] Figure 1 The structure of a possible X-ray imaging system is shown, as Figure 1 shown, the X-ray imaging system includes a suspension device 101, an X-ray generating mechanism 201, a column 301, and an examination table 401. The suspension device 101 can be installed on the top wall or wall of a building, etc. The suspension device 101 can include a main body frame 111, a telescopic cylinder 121, and an angle adjustment mechanism 131 assembled together, so that the suspension device 101 can move within a predetermined range in multiple spatial degrees of freedom, and thus the suspension device 101 can be used to hold the X-ray generating mechanism 201 and adjust the position and posture of the X-ray generating mechanism 201. The X-ray generating mechanism 201 can include an X-ray generator and an X-ray collimator. The X-ray generator is used to generate X-rays, and the X-ray collimator confines the X-rays generated by the X-ray generator within a predetermined range.

[0004] Further, the column 301 or the examination table 401 is used according to the part of the object to be imaged required for imaging and the state of the object to be imaged itself, where the object to be imaged can lie flat on the examination table 401 or stand in front of the column 301. After the object to be imaged lies flat or stands in place, the X-rays generated by the X-ray generator and collimated by the X-ray collimator pass through a predetermined part of the object to be imaged. Further, for example, X-ray detectors provided on the column 301 and the examination table 401 detect the passed X-rays, and the detection components of the detectors generate output signals based on the ray intensity hitting each discrete area of the detector, and the output signals are processed to generate an image that can be displayed for viewing, and the image can be displayed in the display device of the X-ray imaging system.

[0005] Thus, by utilizing the different penetration capabilities of X-rays for different substances, by detecting the X-rays passing through the object to be imaged and processing them, an image showing the internal structure of the object to be imaged is finally obtained.

[0006] In order to facilitate imaging of different parts of an object to be imaged, the position and attitude of the X-ray generating mechanism 201 are adjusted by using the suspension device 101 as described above. The angle adjustment mechanism 131 of the suspension device 101 can adjust the rotation angle of the X-ray generating mechanism 201. However, for existing X-ray imaging systems, some angle adjustment mechanisms only have a manual adjustment function; some angle adjustment mechanisms can achieve an automatic adjustment function, but as shown in, for example, Figure 2 Since the angle adjustment mechanism 131 includes additional structures such as a clutch that cooperates with a power source, the structure is complex, the occupied space is large, and the cost is high. SUMMARY OF THE UTILITY MODEL

[0007] Based on the problems of the above-mentioned prior art, an object of the present application is to provide a suspension device for an X-ray imaging system, which can realize two working modes of automatic and manual with a relatively simple structure, and occupies a small space and has a low cost.

[0008] Another object of the present application is to provide an X-ray imaging system including the above-mentioned suspension device.

[0009] In order to achieve the above object, the embodiments of the present application can adopt the following technical solutions.

[0010] The embodiments of the present application provide a suspension device for an X-ray imaging system, which is used to suspend an X-ray generating mechanism and includes a telescopic cylinder and an angle adjustment mechanism. The angle adjustment mechanism is connected to the telescopic cylinder and is used to connect the X-ray generating mechanism. The angle adjustment mechanism can move together with the telescopic cylinder and can adjust the rotation angle of the X-ray generating mechanism. It is characterized in that the angle adjustment mechanism includes:

[0011] A housing, which includes a first part and a second part. The first part and the second part are fixedly connected at an angle to form a bent structure. The first part is connected to the telescopic cylinder;

[0012] A power source, which is received and installed in the first part;

[0013] An output assembly, which has a brake and an output shaft. The brake is received and installed in the second part. One end of the output shaft is connected to the brake and the other end extends out of the second part for connecting to the X-ray generating mechanism; and

[0014] A belt drive assembly, which is received in the housing. The belt drive assembly is drivingly connected to the power source and the output shaft.

[0015] In an optional solution, the length direction of the first part is along a first direction, and the length direction of the second part is along a second direction.

[0016] The first direction is perpendicular to the axial direction of the telescopic cylinder, the second direction is parallel to the axial direction of the telescopic cylinder, and the output shaft extends along a third direction parallel to the first direction.

[0017] In another alternative solution, the output assembly further includes a connecting bracket, the connecting bracket is in a flat plate shape and is fixed to the other end of the output shaft, and the connecting bracket is used for fixedly installing the X-ray generating mechanism.

[0018] In another alternative solution, in the third direction, the brake is closer to the telescopic cylinder than the connecting bracket.

[0019] In another alternative solution, in the second direction, the telescopic cylinder and the second part are located on the same side of the first part.

[0020] In another alternative solution, the power source is a motor, and the motor includes a motor shaft.

[0021] The belt transmission assembly includes a first pulley, a second pulley and a transmission belt. The first pulley is mounted on the motor shaft in a torque-resistant manner, the second pulley is mounted on the output shaft in a torque-resistant manner, and the transmission belt is sleeved on the first pulley and the second pulley.

[0022] In another alternative solution, the angle adjustment mechanism further includes a tensioning assembly. The tensioning assembly includes a mounting bracket, and the motor is mounted on the mounting bracket. The tensioning assembly is used to be operated to linearly move the mounting bracket relative to the housing to adjust the positions of the mounting bracket and the motor, so as to tension the transmission belt.

[0023] In another alternative solution, the tensioning assembly further includes a fixing member and an adjusting assembly.

[0024] The adjusting assembly is fixed to the housing and is connected to the mounting bracket. The adjusting assembly is used to be operated to linearly move the mounting bracket relative to the housing so that the transmission belt is in a tensioned state, and

[0025] The fixing member is mounted on the housing and the mounting bracket, so that the mounting bracket is fixed to the housing through the fixing member when the transmission belt is in a tensioned state.

[0026] In another alternative solution, the angle adjustment mechanism further includes a crossed roller bearing. The crossed roller bearing includes an outer ring and an inner ring. One of the outer ring and the inner ring is fixed to the housing, and the other of the outer ring and the inner ring is fixed to the output shaft.

[0027] In another alternative solution, the angle adjustment mechanism further includes a limiting component, and the limiting component includes a limiting disk and a limiting member.

[0028] The limiting disk is relatively fixed to the other one of the outer ring and the inner ring, and the limiting disk is formed with a limiting groove extending along its circumferential direction.

[0029] The limiting member is relatively fixed to one of the outer ring and the inner ring, and the limiting member is inserted into the limiting groove.

[0030] In another alternative solution, the angle adjustment mechanism further includes a plurality of connecting members. One of the outer ring and the inner ring is fixed to the housing via the plurality of connecting members, and at least one of the plurality of connecting members serves as the limiting member.

[0031] In another alternative solution, the angle adjustment mechanism further includes a rotational position sensing component installed in the housing. The rotational position sensing component includes a first gear, a second gear, and an encoder.

[0032] The first gear is installed on the output shaft in a torsion-resistant manner. The second gear is always engaged with the first gear. The encoder is installed on the housing, and the encoder can sense the rotational position of the output shaft via the second gear.

[0033] An embodiment of the present application further provides an X-ray imaging system, including:

[0034] The suspension device for the X-ray imaging system according to any one of the above technical solutions; and

[0035] An X-ray generating mechanism, which is installed on the angle adjustment mechanism.

[0036] In an alternative solution, in the axial direction of the output shaft, the second part is located between the X-ray generating mechanism and the telescopic cylinder, and the X-ray generating mechanism, the angle adjustment mechanism, and the telescopic cylinder are arranged along the axial direction of the output shaft. Description of the Drawings

[0037] Figure 1 is a perspective schematic diagram showing a possible X-ray imaging system.

[0038] Figure 2 is showing Figure 1 the perspective schematic diagram of the partial structure of the X-ray imaging system in

[0039] Figure 3It is a three-dimensional schematic diagram showing an assembly of a suspension device and an X-ray generating mechanism for an X-ray imaging system according to an embodiment of the present application.

[0040] Figure 4 It shows Figure 3 Another three-dimensional schematic diagram of the assembly in

[0041] Figure 5 It shows Figure 3 The front view schematic diagram of the assembly in

[0042] Figure 6 It shows Figure 3 The side view schematic diagram of the assembly in

[0043] Figure 7 It shows Figure 3 A three-dimensional schematic diagram of a partial structure of the suspension device in , mainly showing a partial structure of the telescopic cylinder and the angle adjustment mechanism.

[0044] Figure 8 It shows Figure 3 The sectional view schematic diagram of the angle adjustment mechanism of the suspension device in

[0045] Figure 9 It shows Figure 8 The partial enlarged schematic diagram of

[0046] Figure 10 It shows Figure 3 The partial enlarged schematic diagram of the angle adjustment mechanism of the suspension device in , mainly showing the power source and the tensioning assembly.

[0047] Figure 11 It shows Figure 3 Another partial enlarged schematic diagram of the angle adjustment mechanism of the suspension device in , mainly showing the power source and the tensioning assembly.

[0048] Figure 12 It shows Figure 3 Another partial enlarged schematic diagram of the angle adjustment mechanism of the suspension device in , mainly showing the power source and the tensioning assembly.

[0049] Figure 13 It shows Figure 3 A three-dimensional schematic diagram of a partial structure of the angle adjustment mechanism of the suspension device in , showing the structure of the rotation position sensing assembly in a perspective manner.

[0050] Figure 14 It shows Figure 13 The three-dimensional schematic diagram of the rotation position sensing assembly in

[0051] Figure 15 It showsFigure 3 Schematic three-dimensional view of the crossed roller bearing of the angle adjustment mechanism of the suspension device in

[0052] Figure 16 shows Figure 3 Schematic three-dimensional view of the limit disc of the angle adjustment mechanism of the suspension device in

[0053] Figure 17 and Figure 18 shows Figure 3 Schematic three-dimensional view of the connecting member of the angle adjustment mechanism of the suspension device in Figure 18 wherein the second connecting member in Specific embodiments

[0054] Embodiments of the present application will be described below with reference to the accompanying drawings. For ease of understanding, the elements shown in the respective drawings may include elements represented differently from the actual dimensions and scales, etc. In addition, in the specific description of the embodiments, for the sake of concise description, not all features of the embodiments are described in detail in this specification. For those of ordinary skill in the art related to the content disclosed in the present application, some supplements and refinements made on the basis of the technical content disclosed in the present application, and changes to design, manufacturing or production, etc. belong to conventional technical means and are still within the scope of this disclosure, and should not be understood as the disclosure content of this disclosure being insufficient.

[0055] Unless otherwise defined, the technical terms or scientific terms used in the claims and the specification should have the ordinary meaning understood by those skilled in the art in the technical field to which this application belongs. The "first", "second" and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms such as "comprising" or "including" mean that the components or objects appearing before "comprising" or "including" cover the components or objects listed after "comprising" or "including" and their equivalent components, and do not exclude other components or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, nor are they limited to direct or indirect connections.

[0056] In the present application, "transmission connection" between two components means that these two components are connected to each other in a manner capable of transmitting torque, including direct connection and indirect connection; "anti-torsion" connection of two components means that these two components are connected in a manner that they can hardly rotate relative to each other.

[0057] The structure of the X-ray imaging system according to the embodiments of the present application will be described below with reference to the accompanying drawings, and in particular, the structure of the suspension device of the X-ray imaging system will be described.

[0058] As shown Figures 3 to 6 in FIG. 1, an X-ray imaging system according to an embodiment of the present application may include a suspension device 100 and an X-ray generating mechanism 200. The suspension device 100 may be installed on a horizontal plane such as the ceiling (indoor top surface) of a building. The X-ray generating mechanism 200 is installed on the suspension device 100, and the suspension device 100 can hold the X-ray generating mechanism 200 and adjust the position and attitude of the X-ray generating mechanism 200. It can be understood that the suspension device 100 may also be installed on a wall surface, a bracket, etc.

[0059] In this embodiment, as Figures 3 to 6 shown in FIG. 2, the suspension device 100 may include a main body frame 110, a telescopic cylinder 120, and an angle adjustment mechanism 130 assembled together. The main body frame 110 holds and supports the telescopic cylinder 120 and the angle adjustment mechanism 130. The main body frame 110 may be installed on the above-mentioned horizontal plane via a track mechanism composed of multiple tracks, and the multiple tracks of the track mechanism can guide the main body frame 110 to translate within the horizontal plane. Thus, the main body frame 110 can be positioned at any position within a predetermined range within the horizontal plane.

[0060] The telescopic cylinder 120 may have multiple coaxial sleeves, and the diameters of each sleeve may be different. These sleeves are sleeved together to form a structure that can be controlled to expand and contract. One end of the telescopic cylinder 120 is installed on the main body frame 110 and the other end is connected to the angle adjustment mechanism 130. An mechanism capable of driving the angle adjustment mechanism 130 to rotate around the central axis of the telescopic cylinder 120 is also provided inside the telescopic cylinder 120, so that the telescopic cylinder 120 can not only drive the angle adjustment mechanism 130 to reciprocate in the vertical direction perpendicular to the horizontal plane, but also drive the angle adjustment mechanism 130 to rotate around the central axis of the telescopic cylinder 120. In addition, the angle adjustment mechanism 130 is also connected to the X-ray generating mechanism 200, mainly for adjusting the rotation angle of the X-ray generating mechanism 200 around an axis extending in the horizontal direction. The specific structure of the angle adjustment mechanism 130 will be described in detail in the following content. Thus, the suspension device 100 can perform movements within a predetermined range in multiple spatial degrees of freedom, and further drive the X-ray generating mechanism 200 to perform corresponding movements.

[0061] In this embodiment, the X-ray generating mechanism 200 may include an X-ray generator and an X-ray collimator. The X-ray generator may include a tube assembly that can generate X-rays. The X-ray collimator confines the X-rays generated by the X-ray generator within a predetermined range, so that the X-rays can be concentrated on a predetermined part of the object to be imaged. The present disclosure does not limit the specific structure of the X-ray generating mechanism 200, and the X-ray generating mechanism 200 may use various existing or future technologies.

[0062] The specific structure of the angle adjustment mechanism 130 of the suspension device 100 will be specifically described below.

[0063] In this embodiment, as Figures 7 to 10 shown, the angle adjustment mechanism 130 may include a housing 1, a power source 2, an output assembly 3, a belt drive assembly 4, a tensioning assembly 5, a crossed roller bearing 6, a limiting assembly 7, a plurality of connecting members (a first connecting member 8a and a second connecting member 8b), and a rotational position sensing assembly 9 assembled together.

[0064] In this embodiment, as Figure 7 and Figure 8 shown, the housing 1 is integrally formed into a bent structure bent at a predetermined angle (substantially 90 degrees in this embodiment), and other components are all installed on the housing 1 and supported by the housing 1, and most components are located in the internal space of the housing 1, so that the housing 1 can also effectively protect other components. Specifically, as Figure 7 and Figure 8 shown, the housing 1 includes a housing main body 11, a back plate 12, and a bottom cover 13 assembled together. An internal space for accommodating and installing other components is defined inside the housing 1 by the housing main body 11, the back plate 12, and the bottom cover 13. Exemplarily, the housing main body 11 may be integrally formed by casting, and the back plate 12 and the bottom cover 13 are independently manufactured and detachably installed on the housing main body 11.

[0065] Furthermore, as Figure 7 and Figure 8 shown, the housing 1 may be divided into a first part 1a and a second part 1b whose length directions extend along different directions (divided by the virtual double-dot dash line in Figure 8 ), and the first part 1a and the second part 1b are fixedly connected to each other at a predetermined angle to form the above-mentioned bent structure. A part of the housing main body 11 and the bottom cover 13 are assembled together to form the first part 1a, and another part of the housing main body 11 and the back plate 12 are assembled to form the second part 1b. The internal spaces of both the first part 1a and the second part 1b communicate with each other to form the entire internal space of the housing 1. In addition, the length direction of the first part 1a is along a first direction D1 parallel to the horizontal plane, and the telescopic cylinder 120 of the suspension device 100 is inserted into one end of the first part 1a and is connected to the first part 1a. The length direction of the second part 1b is along a second direction D2 perpendicular to the first direction D1, and one end of the second part 1b is connected to the other end of the first part 1a. Here, the second direction D2 may be the vertical direction. Thus, in this embodiment, as Figure 7As shown, the first direction D1 is perpendicular to the axial direction of the telescopic cylinder 120, and the second direction D2 is parallel to the axial direction of the telescopic cylinder 120. Thus, with the first part 1a as a reference, the second part 1b and the telescopic cylinder 120 can be located on the same side of the first part 1a ( Figure 7 and Figure 8 the upper side in), that is to say, the second part 1b and the telescopic cylinder 120 are arranged overlapping each other in the second direction D2.

[0066] See, for example Figure 4 and Figure 6 and Figure 7 and Figure 8 etc. In the first direction D1, the connection bracket 33 of the output assembly 3 described below is located on the opposite side of the side where the first part 1a is located with respect to the second part 1b. Thus, when the X-ray generating mechanism 200 is installed on the output assembly 3, in the first direction D1, the second part 1b is located between the X-ray generating mechanism 200 and the telescopic cylinder 120; in the second direction D2, the second part 1b and the telescopic cylinder 120 are located on the same side of the X-ray generating mechanism 200. The X-ray generating mechanism 200, the second part 1b (angle adjusting mechanism 130) and the telescopic cylinder 120 can be arranged overlapping each other in the second direction D2. In this way, it is beneficial to arrange the angle adjusting mechanism 130 in a more compact and space-saving manner between the telescopic cylinder 120 and the X-ray generating mechanism 200, reducing the space occupied by the entire suspension device 100. Here, for example, the second part 1b and the telescopic cylinder 120 being arranged overlapping each other in the second direction D2 means that the second part 1b and the telescopic cylinder 120 have parts located at the same position in the second direction D2. The overlap here does not have to be a complete overlap, that is, the second part 1b and the telescopic cylinder 120 can have parts located at different positions in the second direction D2.

[0067] It can be understood that the cross-sectional shape and size of the housing 1 can be different at various parts. In addition, in other alternative solutions, the housing 1 does not have to be formed by assembling the housing main body 11, the back plate 12 and the bottom cover 13 with each other, and the housing 1 can be formed by assembling components with different quantities and / or different shapes. Furthermore, the predetermined angle formed between the first part 1a and the second part 1b is not limited to the approximately 90 degrees described above, and this predetermined angle can be set as needed. For example, this predetermined angle can be any angle in the range of 80 degrees to 100 degrees.

[0068] In this embodiment, as Figure 8 and Figure 10 and Figure 11As shown, the power source 2 is received and installed within the first part 1a. Further, the power source 2 can be an electric motor. The electric motor can include a stator, a rotor, and a motor shaft that are coaxially assembled together. The rotor and the motor shaft are connected in a torsion-resistant manner and can rotate relative to the stator. When the electric motor is energized and in a working state, the rotor can rotate relative to the stator, and then transmit torque to the outside of the motor through the motor shaft. The power source 2 in the form of an electric motor can reduce the space occupied by the power source 2 and obtain a stable torque output.

[0069] In the present embodiment, as Figure 8 and Figure 9 shown, the output assembly 3 has a brake 31, an output shaft 32, and a connecting bracket 33. The brake 31 can be, but is not limited to, a disc brake or a drum brake. The brake 31 is installed on the housing 1 to controllably brake and position the output shaft 32. The brake 31 is received and installed within the second part 1b and is disposed at a position of the second part 1b away from the first part 1a. In the third direction D3, the brake 31 is closer to the telescopic cylinder 120 than the connecting bracket 33. Thus, the connecting bracket 33 is positioned on the opposite side of the side where the telescopic cylinder 120 is located relative to the brake 31, and the connecting bracket 33 and the X-ray generating mechanism 200 installed on the connecting bracket 33 will not interfere with the telescopic cylinder 120. Therefore, the output shaft 32 can extend a sufficient length as needed. The output shaft 32 is configured to linearly extend along a third direction D3 parallel to the first direction D1. The portion of the output shaft 32 located within the housing 1 can be formed as a solid structure and connected to the brake 31, and the portion of the output shaft 32 extending out of the housing 1 can be formed as a hollow structure and fixed together with the connecting bracket 33. Thus, the output shaft 32 is formed as a cantilever structure, and the brake 31 can balance the weight of the X-ray generating mechanism 200 installed on the connecting bracket 33, avoiding weight imbalance of the output assembly 3. Further, the above structure of the output shaft 32 can reduce the weight of the portion of the output shaft 32 extending out of the housing 1 and also take into account the structural strength of the portion of the output shaft 32 located within the internal space of the housing 1. The connecting bracket 33 is in the shape of a flat plate and the connecting bracket 33 is fixed to the portion of the output shaft 32 extending out of the housing 1. Further, a shoulder protruding relative to other portions is also formed in the middle portion of the output shaft 32, and the inner ring 62 of the crossed roller bearing 6 and the following limiting disc 71 of the limiting assembly 7 can be fixedly installed on the shoulder.

[0070] Further, as Figure 7 、 Figure 8 shown, the connecting bracket 33 can be formed with a plurality of mounting holes as needed, such that the connecting bracket 33 can be fixedly connected to the X-ray generating mechanism 200 by using mounting members passing through these mounting holes. In this way, the connecting bracket 33 makes the connection between the X-ray generating mechanism 200 and the output shaft 32 more stable, so that the output shaft 32 can stably support the X-ray generating mechanism 200.

[0071] It can be understood that in other alternative solutions, the connecting bracket 33 can be omitted, so that the output shaft 32 is directly fixedly connected to the X-ray generating mechanism 200, thereby further simplifying the structure of the suspension device 100.

[0072] In this embodiment, as Figures 8 to 11 shown, the belt drive assembly 4 is received in the housing 1. The belt drive assembly 4 is drivingly coupled to the power source 2 and the output shaft 32, so that torque can be transmitted between the power source 2 and the output shaft 32 via the belt drive assembly 4. Specifically, the belt drive assembly 4 includes a first pulley 41, a second pulley 42, and a transmission belt 43. The first pulley 41 is located in the first part 1a of the housing 1. The first pulley 41 is coaxially arranged with the motor shaft and is mounted on the motor shaft in a torque-resistant manner, so that the first pulley 41 rotates together with the motor shaft. The second pulley 42 is located in the second part 1b of the housing 1. The second pulley 42 is coaxially arranged with the output shaft 32 and is mounted on the output shaft 32 in a torque-resistant manner, so that the second pulley 42 rotates together with the output shaft 32. The diameter of the first pulley 41 is smaller than the diameter of the second pulley 42, and the ratio of the diameters of the two pulleys 41, 42 can be adjusted according to the required transmission ratio. In addition, the transmission belt 43 is sleeved on the first pulley 41 and the second pulley 42. The outer peripheral surface of the first pulley 41 may be formed with a belt groove continuously extending in the circumferential direction over the entire circumference, and the outer peripheral surface of the second pulley 42 may also be formed with a belt groove continuously extending in the circumferential direction over the entire circumference. The transmission belt 43 can be sleeved in the belt grooves of the two pulleys 41, 42, thereby preventing the transmission belt 43 from accidentally coming off. The transmission belt 43 may also be a timing belt. The transmission belt 43 is a belt with teeth. The outer peripheral surface of the first pulley 41 may be provided with teeth or grooves that cooperate with the teeth of the transmission belt 43, and the outer peripheral surface of the second pulley 42 may also be provided with teeth or grooves that cooperate with the teeth of the transmission belt 43, whereby the transmission belt 43 synchronously drives relative to the first pulley 41 and the second pulley 42. It is easy to adjust the transmission ratio from the power source 2 to the output shaft 32 by using the belt drive assembly 4, so as to obtain the desired torque transmission capacity.

[0073] In this embodiment, as Figures 10 to 12As shown in the figure, the tensioning assembly 5 is used to fully tension the transmission belt 43 of the belt drive assembly 4, thereby minimizing the probability of the transmission belt 43 slipping or coming off. Specifically, the tensioning assembly 5 includes a mounting bracket 51, a fixing member 52, and an adjustment assembly (adjustment bracket 53 and adjustment member 54). The main body of the mounting bracket 51 is formed with a support hole, through which the motor serving as the power source 2 passes and is fixedly mounted on the mounting bracket 51. In this way, the mounting bracket 51 can stably support the motor, which is beneficial for the motor to maintain a good working state. The two side walls of the mounting bracket 51 are provided at the two side edge portions of the main body and stand up relative to the main body. Each side wall is formed with two connection holes, and the housing main body 11 is formed with elongated holes corresponding to the connection holes of the side walls. Thus, the fixing member 52 (such as a bolt) passing through the elongated holes of the housing main body 11 and the connection holes of the side walls of the mounting bracket 51 can fix the mounting bracket 51 to the housing main body 11.

[0074] Furthermore, the main body of the mounting bracket 51 is also formed with a mounting protrusion for mounting the adjustment bracket 53. The adjustment bracket 53 is formed in a bent structure and is fixed to the housing main body 11. The adjustment member 54 passes through the adjustment bracket 53 and is threadedly connected to the mounting protrusion. Thus, after loosening the fixing member 52 to release the fixation between the mounting bracket 51 and the housing 1, by rotating the adjustment member 54, the mounting bracket 51 can move relative to the housing 1 in the second direction D2 (linear movement), thereby adjusting the relative position of the mounting bracket 51 relative to the housing 1 in the second direction D2. Furthermore, the mounting bracket 51 is fixed to the housing 1 again by the fixing member 52 when the transmission belt 43 is in a tensioned state. The adjustment mechanism can ensure that the transmission belt 43 of the belt drive assembly 4 always works in a tensioned state, thereby preventing the transmission belt 43 from slipping or coming off to ensure that the belt drive assembly 4 has a good ability to transmit torque.

[0075] During the assembly or adjustment process, the position of the power source 2, that is, the first pulley 41, can be adjusted using the adjustment mechanism in the state where the transmission belt 43 is installed on the first pulley 41 and the second pulley 42. In this way, the assembly process is simple and the adjustment is convenient. Compared with using a separate or other types of tensioning mechanisms, the tensioning assembly of this embodiment has a simple structure and occupies a small space.

[0076] It can be understood that in other alternative solutions, the housing main body 11 can be formed with a guiding chute for guiding the movement of the mounting bracket 51 relative to the housing 1, preventing the mounting bracket 51 from skewing during the movement process, thereby avoiding adverse effects on the fixation of the motor and the operation of the belt drive assembly caused thereby.

[0077] In this embodiment, as Figure 8 and Figure 9As shown, the crossed roller bearing 6 includes an outer ring 61 and an inner ring 62 that can rotate relative to each other, and a plurality of rolling elements disposed in the raceways of the crossed roller bearing 6. The rolling elements can be cylindrical rolling elements, and the axes of adjacent rolling elements separated by the spacer blocks extend along the crossing direction. As Figure 15 shown, the outer ring 61 forms a plurality of through mounting holes, and the outer ring 61 can be fixedly mounted on the housing main body 11 by inserting a plurality of connecting members (the first connecting member 8a and the second connecting member 8b) into the mounting holes. The inner ring 62 can be fixedly mounted on the shoulder of the output shaft 32 by interference fit or screw connection. In this way, the housing 1 supports the output shaft 32 through the crossed roller bearing 6, enabling the output shaft 32 to rotate relative to the housing 1. The crossed roller bearing 6 can enable the output shaft 32 to have a high concentric accuracy and can ensure that the output shaft 32 has good rotational ability. Moreover, compared with the solution of arranging a plurality of other bearings, using the crossed roller bearing 6 has a relatively simple structure, occupies a small space, has a low cost, can achieve high working reliability and has a long working life, and is convenient for replacement and maintenance.

[0078] In this embodiment, as Figure 8 and Figure 9 shown, the limiting assembly 7 includes a limiting disk 71 and a limiting member 72. The limiting disk 71 can be fixedly mounted on the output shaft 32 by interference fit or screw connection, so that the limiting disk 71 is relatively fixed to the inner ring 62. Additionally, as Figure 17 and Figure 18 shown, the plurality of connecting members for fixing the outer ring 61 of the crossed roller bearing 6 to the housing 1 include a plurality of first connecting members 8a and one second connecting member 8b. The first connecting member 8a and the second connecting member 8b can both be anchor bolts, but the second connecting member 8b has a longer length (longer head length). Thus, after the first connecting member 8a is installed in place, its head completely enters the corresponding mounting hole without protruding, while after the second connecting member 8b is installed in place, its head protrudes from the corresponding mounting hole. In this way, in this embodiment, the second connecting member 8b can serve as the limiting member 72 of the limiting assembly 7 and be fixed to the housing 1.

[0079] Furthermore, as Figure 16As shown, the limit disk 71 is formed with a limit groove 71c extending along its circumferential direction. The limit groove 71c is not formed as an annular groove extending over the entire circumference, but as an arc-shaped groove with a predetermined length. The second connecting member 8b serving as the limiting member 72 is inserted into the limit groove 71c. Thus, after the output shaft 32 rotates relative to the housing 1 by a certain angle, the limiting member 72 can abut against the circumferential groove end of the limit groove 71c. In this way, the cooperation between the limiting member 72 and the limit groove 71c is used to limit the rotation range of the output shaft 32 relative to the housing 1, thereby preventing the output shaft 32 from driving the X-ray generating mechanism 200 to rotate excessively. Moreover, by using one of the plurality of connecting members that fix the outer ring 61 to the housing 1, namely the second connecting member 8b, as the limiting member 72, the structure of the rotation range limiting mechanism of the output shaft 32 is simplified, thereby reducing the cost of the angle adjustment mechanism 130.

[0080] In this embodiment, as Figure 8 , Figure 9 , Figure 13 and Figure 14 shown, the rotation position sensing assembly 9 is installed inside the second part 1b of the housing 1 for detecting the rotation angle of the output shaft 32 relative to the housing 1, and further determining the rotation angle of the X-ray generating mechanism 200 relative to the housing 1. Specifically, the rotation position sensing assembly 9 includes a first gear 91, a second gear 92, and an encoder 93. The first gear 91 is coaxially arranged with the output shaft 32 and is installed on the output shaft 32 in a torsion-resistant manner, such that the first gear 91 rotates together with the output shaft 32. The diameter of the second gear 92 is smaller than that of the first gear 91 and is always meshed with the first gear 91. The encoder 93 can sense the rotation position of the output shaft 32 by sensing the rotation position of the second gear 92. Further, the encoder 93 can be a grating encoder or a Hall encoder for measuring the rotation angle of the output shaft 32 relative to the housing 1. Thus, the encoder 93 can sense the rotation position of the output shaft 32, and further can sense the rotation position of the output shaft 32 driving the X-ray generating mechanism 200.

[0081] The X-ray imaging system may include a control unit. The rotation position sensing assembly 9 can feedback the sensed parameters to the control unit, which can not only be for the user's reference, but also serve as a basis for controlling other components such as the brake 31. Here, the power source 2, such as a motor controller, can also be connected to the control unit to be controlled by the control unit for its operation. The brake 31 can also be connected to the control unit to be controlled by the control unit for its operation. The angle adjustment mechanism 130 can also be provided with an independent control unit, which can communicate with the control unit of the X-ray imaging system.

[0082] By adopting the above solution, in this embodiment, the angle adjustment mechanism 130 can move together with the telescopic cylinder 120 and can adjust the rotation angle of the X-ray generating mechanism 200. Furthermore, the suspension device 100 including the telescopic cylinder 120 and the angle adjustment mechanism 130 can position the X-ray generating mechanism 200 at any desired position within a predetermined range. Further, when the power source 2 is in the working state, the rotation angle of the X-ray generating mechanism 200 can be automatically adjusted by using the power source 2. For example, in the automatic mode, the control unit of the X-ray imaging system can control the brake 31 to release the braking function and control the power source 2 to start working. The power source 2 drives the output shaft 32 to rotate via the belt drive assembly 4, and then the output shaft 32 drives the X-ray generating mechanism 200. After the X-ray generating mechanism 200 rotates to a predetermined position, the control unit controls the power source 2 to stop working and controls the brake 31 to implement the braking function, so as to hold the X-ray generating mechanism 200 at the predetermined position. When the power source 2 is in the non-working state, the rotation angle of the X-ray generating mechanism 200 can be manually adjusted. For example, in the manual mode, the control unit of the X-ray imaging system or the operator can manually control the brake 31 to release the braking function, and the control unit controls the power source 2 to always be in the non-working state. The operator can rotate the X-ray generating mechanism 200 through the operating rod provided on the X-ray generating mechanism 200. After the X-ray generating mechanism 200 rotates to a predetermined position, the braking function can be manually controlled by the control unit or the operator to implement the braking function, so as to hold the X-ray generating mechanism 200 at the predetermined position. Thus, even when the clutch is omitted, the rotation angle of the X-ray generating mechanism 200 can be adjusted in two working modes: automatic / manual. In addition, the structure of the entire angle adjustment structure is simple and the overall layout is compact, which is beneficial to reducing the size of the housing 1 in all directions, making it convenient for the user to operate after the angle adjustment mechanism 130 is installed in place and not likely to interfere with other devices. Refer to Figure 3 , Figure 4 , in order to facilitate the manual adjustment of the position, rotation angle, etc. of the X-ray generating mechanism 200, the X-ray generating mechanism 200 can be provided with an operating mechanism such as an operating rod that is convenient for grasping and operating.

[0083] In addition, in this embodiment, the housing 1 of the angle adjustment mechanism 130 not only functions to house and support other components, but also has the following functions. Since the housing 1 adopts a first part 1a and a second part 1b that are basically perpendicular to each other, the length direction of the first part 1a is perpendicular to the axial direction of the telescopic cylinder 120, the length direction of the second part 1b is parallel to the axial direction of the telescopic cylinder 120, and the output shaft 32 extends along a third direction D3 parallel to the length direction of the first direction D1, the X-ray generating mechanism 200 can be positioned at a position that is basically aligned with the telescopic cylinder 120. As Figure 3 ,Figure 6 As shown, generally, in the axial direction of the output shaft 32 (i.e., the third direction D3), the second part 1b is located between the X-ray generating mechanism 200 and the telescopic cylinder 120, and the X-ray generating mechanism 200, the angle adjusting mechanism 130, and the telescopic cylinder 120 are arranged along the axial direction of the output shaft 32. In this way, it is possible to prevent the X-ray generating mechanism 200 from being offset relative to the telescopic cylinder 120 and occupying additional space, and also avoid the problems of the instability of the structure of the X-ray imaging system and the limitation of the operator's operation space caused by the offset of the X-ray generating mechanism 200 relative to the telescopic cylinder 120.

[0084] It should be understood that the above embodiments are merely exemplary and are not used to limit the present application. Those skilled in the art can make various modifications and changes to the above embodiments under the teaching of the present application without departing from the scope of the present application. The technical solutions of the present application are supplemented and explained as follows.

[0085] i. In the above specific embodiment, the brake 31 can be configured to be controlled by the control unit of the X-ray imaging system. For example, it can be controlled according to the sensing result of the rotation position sensing component 9, or the braking function of the brake 31 can be manually triggered and released as needed, thereby making the working mode of the angle adjusting mechanism 130 more flexible and applicable to more application scenarios.

[0086] ii. In the above specific embodiment, it is illustrated that the outer ring 61 is fixedly installed on the housing 1 through a plurality of connecting members, and the inner ring 62 is fixedly installed on the output shaft 32. However, the present application is not limited thereto. In other alternative solutions, as long as one of the outer ring 61 and the inner ring 62 is fixed to the housing 1, and the other of the outer ring 61 and the inner ring 62 is fixed to the output shaft 32, so that the housing 1 can support the rotation of the output shaft 32 via the crossed roller bearing 6.

[0087] Similarly, for the limiting component 7, as long as the limiting disk 71 is relatively fixed to the other of the outer ring 61 and the inner ring 62, and the limiting member 72 is relatively fixed to one of the outer ring 61 and the inner ring 62, and then the limiting member 72 and the limiting disk 71 cooperate with each other to be able to limit the rotation range of the output shaft 32 relative to the housing 1. Moreover, in other alternative solutions, at least one of the plurality of connecting members can be used as the limiting member, or a separate limiting member can be provided, rather than using one of the plurality of connecting members as the limiting member.

[0088] iii. It can be understood that in the above specific embodiment, during the assembly process, the back plate 12 and the bottom cover 13 can be detached from the housing main body 11, and then other components can be installed on the housing 1. Moreover, as Figure 7 and Figure 8As shown, the shape of the backplane 12 can be formed to bulge towards the telescopic cylinder 120, so as to be able to match the shapes of other components inside the housing 1 or accommodate more components such as a circuit board assembly, etc., and in this way, the space occupied by the angle adjustment mechanism 130 will not be significantly increased.

[0089] It should be understood that some of the various components, structures, and components described above can be omitted without affecting the achievement of one or more purposes of the present application. Different embodiments, examples, or aspects can be appropriately combined as long as they do not conflict or contradict each other.

[0090] The above has illustrated the exemplary embodiments and variant examples of the present application. However, it should be understood that various modifications can be made. For example, if the described technology is executed 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, the same, similar, or other appropriate results can be achieved, and these changes or modifications also fall within the protection scope of the claims.

Claims

1. A suspension device for an X-ray imaging system, which is used to suspend an X-ray generating mechanism and includes a telescopic cylinder and an angle adjustment mechanism. The angle adjustment mechanism is connected to the telescopic cylinder and is used to connect the X-ray generating mechanism. The angle adjustment mechanism can move together with the telescopic cylinder and can adjust the rotation angle of the X-ray generating mechanism, characterized in that, The angle adjustment mechanism includes: a housing, which includes a first part and a second part, the first part and the second part are fixedly connected at an angle to form a bent structure, and the first part is connected to the telescopic cylinder; a power source, which is received and installed in the first part; an output assembly, which has a brake and an output shaft, the brake is received and installed in the second part, one end of the output shaft is connected to the brake and the other end extends out of the second part for connecting to the X-ray generating mechanism; and a belt drive assembly, which is received in the housing, and the belt drive assembly is drivingly connected to the power source and the output shaft.

2. The suspension device for an X-ray imaging system according to claim 1, characterized in that, The length direction of the first part is along a first direction, and the length direction of the second part is along a second direction. The first direction is perpendicular to the axial direction of the telescopic cylinder, the second direction is parallel to the axial direction of the telescopic cylinder, and the output shaft extends along a third direction parallel to the first direction.

3. The suspension device for an X-ray imaging system according to claim 2, characterized in that, The output assembly further includes a connection bracket, the connection bracket is in a flat plate shape and is fixed to the other end of the output shaft, and the connection bracket is used for fixedly installing the X-ray generating mechanism.

4. The suspension device for an X-ray imaging system according to claim 3, characterized in that, In the third direction, the brake is closer to the telescopic cylinder than the connection bracket.

5. The suspension device for an X-ray imaging system according to claim 2, characterized in that, In the second direction, the telescopic cylinder and the second part are located on the same side of the first part.

6. The suspension device for an X-ray imaging system according to claim 1, characterized in that, The power source is a motor, and the motor includes a motor shaft. The belt drive assembly includes a first pulley, a second pulley and a transmission belt, the first pulley is installed on the motor shaft in a torque-resistant manner, the second pulley is installed on the output shaft in a torque-resistant manner, and the transmission belt is sleeved on the first pulley and the second pulley.

7. The suspension device for an X-ray imaging system according to claim 6, wherein The angle adjustment mechanism further includes a tensioning assembly, the tensioning assembly includes a mounting bracket, the motor is installed on the mounting bracket, and the tensioning assembly is used to be operated to linearly move the mounting bracket relative to the housing to adjust the position of the mounting bracket and the motor, so as to tension the transmission belt.

8. The suspension device for an X-ray imaging system according to claim 7, characterized in that, The tensioning assembly further includes a fixing member and an adjusting assembly. The adjusting assembly is fixed to the housing and is connected to the mounting bracket, and the adjusting assembly is used to be operated to linearly move the mounting bracket relative to the housing so that the transmission belt is in a tensioned state, and The fixing member is installed on the housing and the mounting bracket, so that the mounting bracket is fixed to the housing through the fixing member when the transmission belt is in a tensioned state.

9. The suspension device for an X-ray imaging system according to any one of claims 1 to 8, characterized in that, The angle adjustment mechanism further includes a crossed roller bearing, the crossed roller bearing includes an outer ring and an inner ring, one of the outer ring and the inner ring is fixed to the housing, and the other of the outer ring and the inner ring is fixed to the output shaft.

10. The suspension device for an X-ray imaging system according to claim 9, characterized in that, The angle adjustment mechanism further includes a limiting assembly, the limiting assembly includes a limiting disk and a limiting member. The limiting disk is relatively fixed to the other of the outer ring and the inner ring, and the limiting disk is formed with a limiting groove extending along its circumferential direction. The limiting member is relatively fixed to one of the outer ring and the inner ring, and the limiting member is inserted into the limiting groove.

11. The suspension device for an X-ray imaging system according to claim 10, characterized in that, The angle adjustment mechanism further includes a plurality of connecting members, one of the outer ring and the inner ring is fixed to the housing via the plurality of connecting members, and at least one of the plurality of connecting members serves as the limiting member.

12. The suspension device for an X-ray imaging system according to any one of claims 1 to 8, characterized in that, The angle adjustment mechanism further includes a rotational position sensing assembly installed in the housing. The rotational position sensing assembly includes a first gear, a second gear, and an encoder. The first gear is installed on the output shaft in a torsion-resistant manner. The second gear is always engaged with the first gear. The encoder is installed on the housing, and the encoder can sense the rotational position of the output shaft via the second gear.

13. An X-ray imaging system, characterized in that, Comprising: The suspension device for an X-ray imaging system according to any one of claims 1 to 12; And An X-ray generating mechanism, which is installed on the angle adjustment mechanism.

14. The X-ray imaging system according to claim 13, characterized in that, Axially of the output shaft, the second portion is located between the X-ray generating mechanism and the telescopic cylinder, and the X-ray generating mechanism, the angle adjustment mechanism, and the telescopic cylinder are arranged axially along the output shaft.

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