Shock absorption system and mobile x-ray apparatus

Abstract

This application provides a shock absorption system and a mobile X-ray imaging device. The shock absorption system includes a drive assembly, a roller assembly, a connecting plate, a first shock absorber assembly, and a second shock absorber assembly. The roller assembly is connected to the drive assembly. The first shock absorber assembly includes a first rotating member and a first elastic member. The first rotating member is rotatably connected to the drive assembly and rotates in a plane perpendicular to the axis of the roller assembly. One end of the first elastic member abuts against the first rotating member, and the other end abuts against the body assembly of the mobile X-ray imaging device. The connecting plate is rotatably connected to the side of the drive assembly opposite to the first shock absorber assembly. The second shock absorber assembly includes a linkage mechanism and a second elastic member. One end of the linkage mechanism is rotatably connected to the connecting plate and rotates in a plane perpendicular to the axis of the roller assembly. One end of the second elastic member is connected to the linkage mechanism, and the other end is connected to the drive assembly. The extension / retraction direction of the second elastic member intersects with the extension / retraction direction of the first elastic member. This application achieves shock absorption and buffering effects through the adaptive rotation of the first rotating component and the linkage mechanism, while the first and second elastic components undergo stretching or contraction deformation. This ensures the stability of the DR device even when it travels quickly on uneven surfaces.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a shock absorption system and a mobile X-ray imaging device. Background Technology

[0002] Digital radiography (DR) systems offer advantages over traditional X-ray imaging, including clearer images, lower radiation doses, faster examination speeds, and higher success rates, leading to their widespread use in the medical field. Mobile DR devices are particularly popular due to their superior mobility. However, achieving rapid and stable movement of mobile DR devices presents a design challenge. Current technologies typically achieve shock absorption by coating the wheels with rubber, lacking a substantial vibration damping system. This results in significant bumps when the mobile DR device traverses thresholds, speed bumps, or other challenging terrain, leading to a poor user experience when pushing or moving it. Summary of the Invention

[0003] The purpose of this application is to provide a shock absorption system and a mobile X-ray imaging device, so as to enable the mobile DR device to move quickly and smoothly.

[0004] In a first aspect, this application provides a shock absorption system, comprising:

[0005] Driver components;

[0006] A roller assembly is connected to the drive assembly, and the roller assembly rotates under the drive of the drive assembly;

[0007] The first shock absorption assembly includes a first rotating member and a first elastic member. The first rotating member is rotatably connected to the drive assembly and rotates in a plane perpendicular to the axis of the roller assembly. One end of the first elastic member abuts against the first rotating member, and the other end of the first elastic member abuts against the body assembly of the mobile X-ray imaging device.

[0008] A connecting plate, which is rotatably connected to the side of the drive assembly opposite to the first shock absorber assembly;

[0009] The second damping component includes a linkage mechanism and a second elastic element. One end of the linkage mechanism is rotatably connected to the connecting plate, and the linkage mechanism rotates in a plane perpendicular to the axis of the roller assembly. One end of the second elastic element is connected to the linkage mechanism, and the other end of the second elastic element is connected to the drive assembly. The extension and retraction direction of the second elastic element intersects with the extension and retraction direction of the first elastic element.

[0010] In one possible implementation, the first damping component includes a locking shaft and a first nut, and the first rotating member is provided with a first through hole;

[0011] The drive assembly includes a housing, on which a first limiting plate protrudes from the side opposite to the connecting plate. A second through hole is provided on the first limiting plate. The locking shaft passes through the first through hole and the second through hole and is threadedly connected to the first nut.

[0012] The axial direction of the locking shaft is parallel to the axial direction of the roller assembly, and the first rotating member rotates around the locking shaft.

[0013] In one possible implementation, the first rotating member is provided with a first groove, the first groove including a bottom wall and a first side wall and a second side wall disposed opposite to each other at both ends of the bottom wall, the first side wall and the second side wall being disposed on both sides of the first limiting plate, and the first through hole penetrating the first side wall and the second side wall.

[0014] The bottom wall is located on top of the first limiting plate and maintains a gap with the first limiting plate.

[0015] In one possible implementation, the first shock-absorbing component further includes a pressure block with a positioning groove. The end of the first elastic member away from the first rotating member is engaged in the positioning groove, and the pressure block is connected to the body assembly of the mobile X-ray imaging device.

[0016] In one possible implementation, the linkage mechanism includes a second rotating member, a support rod, and a limiting member, wherein the second rotating member is rotatably connected to the connecting plate, and one end of the support rod is connected to the end of the second rotating member away from the connecting plate;

[0017] A positioning hole is provided on the side wall of the drive assembly facing away from the first shock absorber assembly, and at least a portion of the support rod passes through the positioning hole;

[0018] The second elastic element is provided with an axially through hole. The second elastic element is sleeved on the support rod at the part that passes through the positioning hole, and one end of the second elastic element abuts against the side wall of the drive assembly.

[0019] The limiting member is connected to the end of the support rod away from the second rotating member, and the end of the second elastic member away from the second rotating member abuts against the limiting member;

[0020] The inner diameter of the second elastic element is larger than the diameter of the support rod.

[0021] In one possible implementation, the limiting member includes a washer and a second nut, and the support rod is provided with external threads;

[0022] The washer is fitted onto the support rod and abuts against the second elastic member;

[0023] The second nut is threadedly connected to the support rod via the external thread, and the second nut abuts against the washer.

[0024] In one possible implementation, the connecting plate is provided with two first limiting blocks, and the first limiting blocks are provided with first rotating holes;

[0025] The drive assembly is provided with two second limiting blocks, each with a second rotating hole. The distance between the surfaces of the two second limiting blocks that are far apart from each other is less than or equal to the distance between the surfaces of the two first limiting blocks that are close to each other.

[0026] The shock absorption system also includes a positioning pin and a cotter pin. The positioning pin passes through the first rotating hole and the second rotating hole in sequence and then engages with the cotter pin to lock it in place.

[0027] In one possible implementation, the shock absorption system further includes bushings disposed in the first rotating hole and the second rotating hole, respectively.

[0028] In one possible implementation, the drive assembly includes a housing, a motor, and a reducer, wherein the motor is disposed within the housing, the reducer is connected to the housing, and the drive portion of the reducer passes through the housing and is connected to the motor;

[0029] The roller assembly is connected to the speed reducer.

[0030] Secondly, this application also provides a mobile X-ray imaging device, which includes a body assembly, a chassis assembly, and a shock absorption system provided in the first aspect of this application. The chassis assembly is connected to the bottom of the body assembly, the connecting plate of the shock absorption system is connected to the chassis assembly, and the first elastic element in the first shock absorption assembly abuts against the body assembly.

[0031] The technical solution provided in this application can achieve the following beneficial effects:

[0032] The shock absorption system and mobile X-ray imaging equipment provided in this application can achieve shock absorption and buffering effects through the adaptive rotation of the first rotating component and the linkage mechanism, and through the stretching or contraction deformation of the first elastic component and the second elastic component. The DR equipment can also maintain stability when traveling quickly on uneven roads.

[0033] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of the mobile X-ray imaging device provided in the embodiments of this application;

[0035] Figure 2 This is a partial schematic diagram of a mobile X-ray imaging device provided in one embodiment of this application;

[0036] Figure 3 A schematic diagram of the shock absorption system provided in an embodiment of this application from one perspective;

[0037] Figure 4 A structural schematic diagram of the shock absorption system provided in an embodiment of this application from another perspective;

[0038] Figure 5 A structural schematic diagram of the shock absorption system provided in an embodiment of this application from another perspective;

[0039] Figure 6 A partial schematic diagram of a mobile X-ray imaging device provided in another embodiment of this application;

[0040] Figure 7 An exploded view of the shock absorption system provided in the embodiments of this application;

[0041] Figure 8 This is a partial schematic diagram of a mobile X-ray imaging device provided in yet another embodiment of this application.

[0042] Figure label:

[0043] 100 - Fuselage components;

[0044] 200-Chassis Components;

[0045] 210 - Vibration damping system;

[0046] 1-Driver components;

[0047] 11-Shell;

[0048] 111-Front plate;

[0049] 111a - Positioning hole;

[0050] 111b - Second limit block;

[0051] 111c - Second rotating hole;

[0052] 112-Back panel;

[0053] 112a - Clearance opening;

[0054] 113-Transition plate;

[0055] 114 - First limiting plate;

[0056] 12-Motor;

[0057] 13-Reducer;

[0058] 14- Screws;

[0059] 2-Roller assembly;

[0060] 3-First shock absorption component;

[0061] 31-First rotating component;

[0062] 32 - First elastic element;

[0063] 33 - Locking shaft;

[0064] 34 - First nut;

[0065] 35-Blocking;

[0066] 4-Second damping component;

[0067] 41 - Linkage mechanism;

[0068] 411 - Second rotating component;

[0069] 412 - Support rod;

[0070] 413 - Limiting component;

[0071] 413a - Washer;

[0072] 413b - Second nut;

[0073] 42 - Second elastic element;

[0074] 5-Connecting plate;

[0075] 51 - Second limiting plate;

[0076] 52 - First limit block;

[0077] 521 - First rotating hole;

[0078] 6-Locking pin;

[0079] 7- Cotter pin;

[0080] 8-Bushing.

[0081] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Detailed Implementation

[0082] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0083] In the description of this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; unless otherwise specified or explained, the term "multiple" refers to two or more; the terms "connected," "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0084] In the description of this specification, it should be understood that the directional terms such as "upper" and "lower" used in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should also be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0085] Figure 1 This is a schematic diagram of the structure of the mobile X-ray imaging device provided in the embodiments of this application, as shown below. Figure 1 As shown in the figure, this application embodiment provides a shock absorption system 210, which can be applied to a mobile X-ray imaging device, specifically a mobile direct digital radiography (DR) system, hereinafter referred to as DR device. The DR device includes a body assembly 100 and a chassis assembly 200. The chassis assembly 200 can be connected to the bottom of the body assembly 100. The body assembly 100 may include a high-voltage generator, capacitor box, screen module, industrial control computer, and other devices. The chassis assembly 200 may include a rotating mechanism for driving the column assembly to rotate, and may also include circuit boards, anti-collision structures, etc. Figure 2 This is a partial schematic diagram of a mobile X-ray imaging device provided in one embodiment of this application, as shown below. Figure 2As shown, in one embodiment, the shock absorption system 210 can be applied to the rear wheel system of the DR device. Of course, in other embodiments, the shock absorption system 210 can also be applied to the front wheel system of the DR device, or simultaneously to both the rear and front wheel systems. This embodiment uses the application of the shock absorption system 210 to the rear wheel system of the DR device as an example for illustration.

[0086] Figure 3 A schematic diagram of the structure of the shock absorption system 210 provided in the embodiments of this application from one perspective, as shown below. Figure 3 As shown, the shock absorption system 210 includes a drive assembly 1, a roller assembly 2, a first shock absorber assembly 3, a second shock absorber assembly 4, and a connecting plate 5. The roller assembly 2 is connected to the drive assembly 1 and rotates under the drive of the drive assembly 1, enabling the DR device to move on the ground.

[0087] Figure 4 A schematic diagram of the shock absorption system 210 provided in the embodiments of this application from another perspective, as shown below. Figure 2 and Figure 4 As shown, the connecting plate 5 can be rotatably connected to the side of the drive assembly 1 opposite to the first shock-absorbing assembly 3. This connecting plate 5 can be connected to the chassis assembly 200 of the DR device, and the first shock-absorbing assembly 3 can be supported at the bottom of the body assembly 100. This allows the entire shock absorption system 210 to be mounted at the bottom of the body assembly 100, enabling it to support the DR device and allow for its overall movement. The connecting plate 5 can be fastened to the chassis assembly 200 using bolts or other connecting components, or it can be fixed to the chassis assembly 200 using welding, ensuring reliable installation of the connecting plate 5 within the DR device.

[0088] Figure 5 This is a structural schematic diagram of the shock absorption system 210 provided in an embodiment of this application from another perspective. Figure 6 A partial schematic diagram of a mobile X-ray imaging device provided in another embodiment of this application, as shown below. Figure 5 and Figure 6As shown, the first shock-absorbing assembly 3 may include a first rotating member 31 and a first elastic member 32. The first rotating member 31 is rotatably connected to the drive assembly 1 and rotates in a plane perpendicular to the axis of the roller assembly 2. One end of the first elastic member 32 abuts against the first rotating member 31, and the other end of the first elastic member 32 abuts against the body assembly 100 of the mobile X-ray imaging device. The second shock-absorbing assembly 4 includes a linkage mechanism 41 and a second elastic member 42. One end of the linkage mechanism 41 is rotatably connected to the connecting plate 5 and rotates in a plane perpendicular to the axis of the roller assembly 2. One end of the second elastic member 42 is connected to the linkage mechanism 41, and the other end of the second elastic member 42 is connected to the drive assembly 1. The extension and retraction direction of the second elastic member 42 intersects with the extension and retraction direction of the first elastic member 32.

[0089] The second shock-absorbing component 4 is located below the rotatable connection between the connecting plate 5 and the drive component 1. When the DR device travels on uneven surfaces, the roller assembly 2 moves up and down relative to the body assembly 100. In this state, the roller assembly 2 drives the drive component 1, and the first elastic element 32 can undergo stretching or compression deformation. At the same time, the first rotating element 31 can adaptively rotate relative to the drive component 1. Thus, the cooperation of the first elastic element 32 and the first rotating element 31 can absorb the overall up-and-down movement of the roller assembly 2 and the drive component 1. Simultaneously, since the drive component 1 is rotatably connected to the connecting plate 5, it can also rotate along with the up-and-down movement of the roller assembly 2 and the drive component 1. At this time, the second elastic element 42 can undergo stretching or contraction deformation, and the linkage mechanism 41 can also adaptively rotate relative to the connecting plate 5. Thus, the cooperation of the second elastic element 42 and the linkage mechanism 41 can absorb the rotation of the roller assembly 2 and the drive component 1.

[0090] Therefore, through the adaptive rotation of the first rotating member 31 and the linkage mechanism 41, and the stretching or contraction deformation of the first elastic member 32 and the second elastic member 42, the shock absorption and buffering effect can be achieved, and the DR equipment can maintain stability when traveling quickly on uneven roads.

[0091] Both the first elastic element 32 and the second elastic element 42 can be components that can release elastic potential energy, such as compression springs, rubber springs, or gas springs. The first elastic element 32 and the second elastic element 42 can be selected and designed in conjunction with the weight of the entire DR equipment and the vibration damping range to ensure that the first elastic element 32 and the second elastic element 42 can support the weight of the entire machine within the adjustable elastic range.

[0092] In one embodiment, Figure 7 An exploded view of the shock absorption system 210 provided in the embodiments of this application, as shown below. Figure 7As shown, the drive assembly 1 may include a housing 11, a motor 12, and a reducer 13. The motor 12 is disposed inside the housing 11, and the reducer 13 is connected to the housing 11. The drive part of the reducer 13 passes through the housing 11 and is connected to the motor 12. The roller assembly 2 is connected to the reducer 13. The reducer 13 and the motor 12 work together to output a set torque to drive the roller assembly 2 to rotate, and the rotation direction of the roller assembly 2 can be adjusted. The housing 11, motor 12, and reducer 13 can be assembled into a single structure and can be integrally assembled into the shock absorption system 210 for easy assembly. In one embodiment, the reducer 13 and the motor 12 can be directly connected, or they can be connected through a transmission structure such as gears or chains; this embodiment does not impose any limitations on this.

[0093] In one embodiment, such as Figure 7 As shown, the housing 11 may include a front plate 111 and a rear plate 112 arranged opposite to each other, and two transition plates 113 arranged opposite to each other. The front plate 111, the rear plate 112, and the two transition plates 113 form a rectangular frame structure, and the motor 12 may be located inside the frame structure. The two transition plates 113 are respectively fixedly connected to the front plate 111 and the rear plate 112 by screws 14. Two motors 12 and two reducers 13 may be provided. One reducer 13 may be mounted on one transition plate 113, and the other reducer 13 may be mounted on the other transition plate 113. The drive unit of the reducer 13 can pass through the corresponding transition plate 113 and connect to the corresponding motor 12. The roller assembly 2 may include two rollers, each connected to a corresponding reducer 13, thereby enabling the rollers to rotate through the cooperation of the motor 12 and the reducer 13.

[0094] The first rotating member 31 can be rotatably connected to the rear plate 112, and the linkage mechanism 41 can be rotatably connected to the front plate 111.

[0095] In one embodiment, such as Figure 7 As shown, the first damping assembly 3 includes a locking shaft 33 and a first nut 34, and the first rotating member 31 is provided with a first through hole. As explained above, the drive assembly 1 includes a housing 11, and a first limiting plate 114 protrudes from the side of the housing 11 opposite to the connecting plate 5, that is, the first limiting plate 114 is provided on the rear plate 112 of the housing 11. The first limiting plate 114 is provided with a second through hole, and the locking shaft 33 passes through the first through hole and the second through hole and is threadedly connected to the first nut 34. The axial direction of the locking shaft 33 is parallel to the axial direction of the roller assembly 2, and the first rotating member 31 can rotate around the locking shaft 33.

[0096] The locking shaft 33 and the first nut 34 work together to facilitate the assembly and positioning of the first rotating part 31, so that the first rotating part 31 can only rotate in a set direction, and avoid the first rotating part 31 from shaking in other directions.

[0097] In one embodiment, such as Figure 7 As shown, a first groove may be provided on the first rotating member 31. The first groove includes a bottom wall and a first side wall and a second side wall disposed opposite to each other at both ends of the bottom wall. The first side wall and the second side wall are disposed on both sides of the first limiting plate 114, and a first through hole passes through the first side wall and the second side wall. The bottom wall is disposed on the top of the first limiting plate 114 and maintains a gap with the first limiting plate 114. The first side wall and the second side wall respectively block the first limiting plate 114 on both sides, which can limit the first rotating member 31 in the axial direction of the first through hole and the second through hole, preventing the first rotating member 31 from shaking. In addition, by maintaining a gap between the bottom wall of the first groove and the first limiting plate 114, the rotation of the first rotating member 31 can be facilitated, and interference between the first rotating member 31 and the first limiting plate 114 can be avoided.

[0098] In one embodiment, Figure 8 This is a partial schematic diagram of a mobile X-ray imaging device provided in another embodiment of this application, as shown below. Figure 8 As shown, the first shock-absorbing component 3 also includes a pressure block 35. The pressure block 35 has a positioning groove, and the end of the first elastic member 32 furthest from the first rotating member 31 is engaged in the positioning groove. The pressure block 35 is connected to the body assembly 100 of the mobile X-ray imaging equipment. The positioning groove limits the first elastic member 32 in the circumferential direction, ensuring stable stretching or contraction and preventing radial deformation. The pressure block 35 can be fixed to the bottom wall of the body assembly 100 using bolts, rivets, or other connecting parts, facilitating the assembly of the pressure block 35 and the first elastic member 32. After installation, the first elastic member 32 remains compressed, providing support to the upper body assembly 100. The pressure block 35 limits the first elastic member 32 in the height direction of the body assembly 100, ensuring that the direction of elastic deformation of the first elastic member 32 is consistent with or nearly consistent with the height direction of the body assembly 100. "Approaching consistency" means that there is a small angle between the direction of elastic deformation of the first elastic element 32 and the height direction of the fuselage assembly 100, such as 0 to 30°. Of course, it can also be other angles, which are not limited in this embodiment.

[0099] In one embodiment, such as Figure 3 and Figure 7As shown, for the second damping assembly 4, the linkage mechanism 41 may include a second rotating member 411, a support rod 412, and a limiting member 413. The second rotating member 411 is rotatably connected to the connecting plate 5, and one end of the support rod 412 is connected to the end of the second rotating member 411 away from the connecting plate 5. The structure of the second rotating member 411 can be similar to that of the first rotating member 31, i.e., the second rotating member 411 may include a second groove, which includes two opposing sidewalls. A second limiting plate 51 is provided on the connecting plate 5, protruding from the side of the connecting plate 5 facing the drive assembly 1. The two sidewalls can be respectively provided on both sides of the second limiting plate 51, thereby preventing the second rotating member 411 from shaking through the cooperation of the two sidewalls and the second limiting plate 51. Alternatively, the second rotating member 411 can be positioned on the second limiting plate 51 by the cooperation of the aforementioned locking shaft 33 and the first nut 34, allowing the second rotating member 411 to rotate around the locking shaft 33 as the rotation center.

[0100] like Figure 7 As shown, a positioning hole 111a can be provided on the side wall of the drive assembly 1 facing away from the first damping assembly 3, and at least a portion of the support rod 412 can pass through the positioning hole 111a. The side wall of the drive assembly 1 facing away from the first damping assembly 3 can be the aforementioned front plate 111, that is, the positioning hole 111a can be provided on the front plate 111. The portion of the support rod 412 passing through the positioning hole 111a can be located below the motor 12. A notch can be provided on one side of the positioning hole 111a on the front plate 111, which facilitates the insertion of the support rod 412 into the positioning hole 111a. In addition, a limiting groove can be provided on the side of the front plate 111 away from the connecting plate 5. The center of the limiting groove coincides with the center of the positioning hole 111a. The diameter of the limiting groove is larger than the diameter of the positioning hole 111a. The end of the second elastic member 42 can be engaged in the limiting groove, so that the second elastic member 42 can be limited in the circumferential direction through the limiting groove, preventing the second elastic member 42 from shaking, deforming radially or falling off.

[0101] like Figure 3As shown, the second elastic member 42 is provided with an axially through hole. The second elastic member 42 can be sleeved on the support rod 412 at the part passing through the positioning hole 111a, and one end of the second elastic member 42 abuts against the side wall of the drive assembly 1. The limiting member 413 is connected to the end of the support rod 412 away from the second rotating member 411, and the end of the second elastic member 42 away from the second rotating member 411 abuts against the limiting member 413. The second rotating member 411 and the second elastic member 42 are located on both sides of the front plate 111. The second elastic member 42 can be stretched or contracted between the front plate 111 and the limiting member 413. At the same time, the inner diameter of the second elastic member 42 is larger than the diameter of the support rod 412. When the second elastic member 42 undergoes elastic deformation, the connecting rod assembly and the front plate 111 can slide relative to each other. Since there is a gap between the support rod 412 and the second elastic member 42, the support rod 412 can also swing slightly within the second elastic member 42 while sliding relative to it. This enables the drive assembly 1 to rotate slightly, and the elastic deformation of the second elastic member 42 can buffer and absorb the shaking during the rotation of the drive assembly 1.

[0102] In one embodiment, such as Figure 7 As shown, the limiting member 413 may include a washer 413a and a second nut 413b, and the support rod 412 is provided with external threads. The washer 413a can be sleeved on the support rod 412 and abut against the second elastic member 42. The second nut 413b is threadedly connected to the support rod 412 through external threads, and the second nut 413b abuts against the washer 413a. Thus, the second elastic member 42 can be positioned between the front plate 111 and the washer 413a. By adjusting the position of the threaded connection of the second nut 413b on the support rod 412, the compression degree of the second elastic member 42 can be adjusted, thereby adjusting the cushioning effect.

[0103] In one embodiment, a positioning boss may be provided on the washer 413a, and the second elastic member 42 may be sleeved on the positioning boss, thereby limiting the second elastic member 42 through the positioning boss and preventing the second elastic member 42 from shaking, radially deforming or falling off.

[0104] In one embodiment, such as Figure 5 As shown, a clearance opening 112a can be provided on the rear plate 112 of the housing 11. In the axial direction of the support rod 412, the rear plate 112 does not obstruct the support rod 412 at the clearance opening 112a, thus facilitating the adjustment of the screw depth of the second thread relative to the support rod 412 through the clearance opening 112a. This facilitates the adjustment of the compression of the second elastic element 42, thereby achieving the damping effect of the second damping assembly 4. Furthermore, the clearance opening 112a also facilitates the routing of the motor 12 wiring, thus simplifying wiring harness management.

[0105] In one embodiment, such as Figure 7 As shown, the connecting plate 5 can be provided with two first limiting blocks 52, and the first limiting blocks 52 can be provided with first rotating holes 521. The drive assembly 1 can be provided with two second limiting blocks 111b. Specifically, the front plate 111 of the drive assembly 1 has two limiting blocks on the side facing the connecting plate 5. The second limiting blocks 111b can be provided with second rotating holes 111c. The distance between the surfaces of the two second limiting blocks 111b that are far apart from each other is less than or equal to the distance between the surfaces of the two first limiting blocks 52 that are close to each other. This allows the two second limiting blocks 111b to be positioned between the two first limiting blocks 52, which is beneficial for a tighter fit between the connecting plate 5 and the housing 11 and improves the integration. The shock absorption system 210 also includes a positioning pin 6 and a cotter pin 7. The positioning pin 6 can pass through the first rotating hole 521 and the second rotating hole 111c in sequence and then engage with the cotter pin 7 to lock it in place. The positioning pin 6 can be provided in two parts. One positioning pin 6 can pass sequentially through the first rotating hole 521 and the second rotating hole 111c of the first limiting block 52 and the second limiting block 111b located on one side of the shock absorption system 210. The part of the positioning pin 6 extending out of the second rotating hole 111c is provided with a pin hole, which can be radially through the positioning pin 6. A cotter pin 7 can be inserted into the pin hole to lock the positioning pin 6. Similarly, the other positioning pin 6 can pass sequentially through the first rotating hole 521 and the second rotating hole 111c of the first limiting block 52 and the second limiting block 111b located on the other side of the shock absorption system 210, or it can be locked and positioned by another cotter pin 7. This will not be described in detail here.

[0106] In addition, by restricting the rotation of the connecting plate 5 and the front plate 111 by the two positioning pins 6, the roller assembly 2 and the drive assembly 1 can float up and down relative to the chassis assembly 200 of the DR equipment as a whole, without the situation where one roller on one side floats up and down. Thus, when the DR equipment is operated laterally, the roller on one side will not float down due to the center offset, thereby achieving the effect of stabilizing the machine body.

[0107] Among them, such as Figure 7 As shown, the first limiting block 52 is disposed on the top of the connecting plate 5, and the second limiting block 111b is disposed on the top of the front plate 111. This allows the top of the connecting plate 5 and the top of the front plate 111 to be rotatably connected. There is a large space below the rotatable connection position of the connecting plate 5 and the front plate 111, which can be used to connect the second shock absorber 4 and facilitates the driving assembly 1 to rotate relative to the connecting plate 5 by the second shock absorber 4.

[0108] In one embodiment, such as Figure 7As shown, the shock absorption system 210 may also include multiple bushings 8, which are respectively disposed in the first rotating hole 521 and the second rotating hole 111c. Among them, the bushings 8 can be copper bushings, and the function of the copper bushings is to ensure that there is no jamming or abnormal noise when the front plate 111 rotates relative to the connecting plate 5.

[0109] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A shock absorption system, characterized in that, include: Driver components; A roller assembly is connected to the drive assembly, and the roller assembly rotates under the drive of the drive assembly; The first shock absorption assembly includes a first rotating member and a first elastic member. The first rotating member is rotatably connected to the drive assembly and rotates in a plane perpendicular to the axis of the roller assembly. One end of the first elastic member abuts against the first rotating member, and the other end of the first elastic member abuts against the body assembly of the mobile X-ray imaging device. A connecting plate, which is rotatably connected to the side of the drive assembly opposite to the first shock absorber assembly; The second damping component includes a linkage mechanism and a second elastic element. One end of the linkage mechanism is rotatably connected to the connecting plate, and the linkage mechanism rotates in a plane perpendicular to the axis of the roller assembly. One end of the second elastic element is connected to the linkage mechanism, and the other end of the second elastic element is connected to the drive assembly. The extension and retraction direction of the second elastic element intersects with the extension and retraction direction of the first elastic element.

2. The shock absorption system according to claim 1, characterized in that, The first shock-absorbing component includes a locking shaft and a first nut, and the first rotating part is provided with a first through hole; The drive assembly includes a housing, on which a first limiting plate protrudes from the side opposite to the connecting plate. A second through hole is provided on the first limiting plate. The locking shaft passes through the first through hole and the second through hole and is threadedly connected to the first nut. The axial direction of the locking shaft is parallel to the axial direction of the roller assembly, and the first rotating member rotates around the locking shaft.

3. The shock absorption system according to claim 2, characterized in that, The first rotating member is provided with a first groove, the first groove includes a bottom wall and a first side wall and a second side wall disposed opposite to each other at both ends of the bottom wall, the first side wall and the second side wall are disposed on both sides of the first limiting plate, and the first through hole passes through the first side wall and the second side wall; The bottom wall is located on top of the first limiting plate and maintains a gap with the first limiting plate.

4. The shock absorption system according to claim 2, characterized in that, The first shock-absorbing component also includes a pressure block, which has a positioning groove. The end of the first elastic member away from the first rotating member is engaged in the positioning groove. The pressure block is connected to the body assembly of the mobile X-ray imaging device.

5. The shock absorption system according to claim 1, characterized in that, The linkage mechanism includes a second rotating member, a support rod, and a limiting member. The second rotating member is rotatably connected to the connecting plate, and one end of the support rod is connected to the end of the second rotating member away from the connecting plate. A positioning hole is provided on the side wall of the drive assembly facing away from the first shock absorber assembly, and at least a portion of the support rod passes through the positioning hole; The second elastic element is provided with an axially through hole. The second elastic element is sleeved on the support rod at the part that passes through the positioning hole, and one end of the second elastic element abuts against the side wall of the drive assembly. The limiting member is connected to the end of the support rod away from the second rotating member, and the end of the second elastic member away from the second rotating member abuts against the limiting member; The inner diameter of the second elastic element is larger than the diameter of the support rod.

6. The shock absorption system according to claim 5, characterized in that, The limiting component includes a washer and a second nut, and the support rod is provided with external threads; The washer is fitted onto the support rod and abuts against the second elastic member; The second nut is threadedly connected to the support rod via the external thread, and the second nut abuts against the washer.

7. The shock absorption system according to claim 1, characterized in that, The connecting plate is provided with two first limiting blocks, and the first limiting blocks are provided with first rotating holes; The drive assembly is provided with two second limiting blocks, each with a second rotating hole. The distance between the surfaces of the two second limiting blocks that are far apart from each other is less than or equal to the distance between the surfaces of the two first limiting blocks that are close to each other. The shock absorption system also includes a positioning pin and a cotter pin. The positioning pin passes through the first rotating hole and the second rotating hole in sequence and then engages with the cotter pin to lock it in place.

8. The shock absorption system according to claim 7, characterized in that, It also includes bushings, which are respectively disposed in the first rotating hole and the second rotating hole.

9. The shock absorption system according to any one of claims 1-8, characterized in that, The drive assembly includes a housing, a motor, and a reducer. The motor is disposed inside the housing, the reducer is connected to the housing, and the drive unit of the reducer passes through the housing and is connected to the motor. The roller assembly is connected to the speed reducer.

10. A mobile X-ray imaging device, characterized in that, The device includes a fuselage assembly, a chassis assembly, and a shock absorption system as described in any one of claims 1-9, wherein the chassis assembly is connected to the bottom of the fuselage assembly, the connecting plate of the shock absorption system is connected to the chassis assembly, and the first elastic element in the first shock absorption assembly abuts against the fuselage assembly.

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