Operation and maintenance device for rail transit equipment
By introducing an image acquisition height adjustment component and camera into the track inspection system, the problem of the existing system's inability to flexibly adjust the height has been solved, enabling high-definition image acquisition and accurate data support, thereby improving the efficiency and safety of track inspection.
Patent Information
- Application Number
- CN202520012289.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2035-01-03
AI Technical Summary
Existing track inspection systems cannot flexibly adjust the height when collecting image information, resulting in the inability to obtain the best shooting angle and clear images. This affects the accurate judgment and analysis of track component wear and defects, reduces the accuracy and reliability of inspection data, and increases the risk to track operation safety.
A device for the operation and maintenance of rail transit equipment was designed, including a main body, a fixed pole, a connecting plate, road wheels, and an image acquisition height adjustment component. The device achieves precise adjustment of the camera height through a synchronous motor and a threaded column, and integrates a 2D line scan camera and a 3D camera to meet the inspection needs of different rail infrastructures.
This improved the quality and accuracy of image acquisition, ensuring high-definition image acquisition of track infrastructure, providing timely and accurate data support for track operation and maintenance, and reducing the risk of delays in fault detection.
Smart Images

Figure CN223559654U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to rail transit technical field, concretely relates to a device for rail transit equipment operation and maintenance. BACKGROUND
[0002] Current railway infrastructure detection, monitoring equipment is constantly improved, comprehensive detection train etc. has been put into use, can collect images and identify disease under high speed, but there is the problem of operation scheduling inconvenience and huge cost, the work section still mainly uses artificial detection and small single detection system and advances towards portable and intelligent, track component inspection method has contact type and non-contact type, contact type measurement is accurate but low efficiency and depends on personnel subjective judgment and is difficult to meet the high-speed rail detection requirements, non-contact type includes physical detection technology and detection technology based on machine vision, the latter reduces the dependence on physical equipment and has strong robustness and anti-interference ability, with the development of machine vision technology, track detection is increasingly automated and intelligent, so it is of great significance to research and design track inspection system based on machine vision with high speed, high precision and non-contact.
[0003] According to the patent with the announcement number CN116373922A, a light rail inspection vehicle is disclosed, which belongs to the technical field of track inspection and detection of rail transit. The light rail inspection vehicle includes a non-powered axle, a powered axle, a vehicle body module, and a seat and equipment module. The non-powered axle and the powered axle together form the bottom running part of the inspection vehicle. The vehicle is composed of four modules, which can be disassembled and transported separately when not in use. The inspection and maintenance personnel can quickly assemble and disassemble the vehicle within minutes with the cooperation of two people. Various track inspection equipment can be installed on the vehicle for intelligent detection of the track line. The vehicle can be directly driven without turning around, which is convenient for driving on the track. Tools and spare parts for maintenance can be placed on the seat and equipment module, which is convenient for long-distance transportation and improves work efficiency.
[0004] In the above scheme, it is found that the device cannot adjust the height when collecting image information. Since the height cannot be adjusted flexibly, it is difficult to obtain the best shooting angle and clear image when facing different specifications of track structure, different laying environments, and special conditions of track components, which may lead to missing or distortion of image details, affecting the accurate judgment and analysis of track component wear, disease, and other conditions, reducing the accuracy and reliability of detection data, and further delaying the discovery and maintenance of track faults, increasing the risk of track operation safety, and being not conducive to the efficient maintenance and safety protection of railway infrastructure. UTILITY MODEL CONTENTS
[0005] The utility model provides a device for track traffic equipment operation and maintenance, solve the problem mentioned in background art.
[0006] The above technical purpose of the utility model is realized by the following technical scheme:
[0007] A device for track traffic equipment operation and maintenance, comprising: two main bodies, a plurality of fixed rods are fixedly installed between the two main bodies, two link plates are fixedly installed at the bottom of the two main bodies respectively, and four highway wheels are fixedly installed at the bottom of the four link plates respectively; image acquisition height adjusting assemblies are arranged on one side of the two main bodies respectively and are used for adjusting height.
[0008] By adopting the above technical scheme, the main body is set as the structural basis of the device, bearing and connecting all other components, ensuring the stability and integration of the whole system, the fixed rods are used for connecting the two main bodies, increasing the rigidity and stability of the whole device, the link plate serves as the bridge connecting the main body and the highway wheel, realizing the stable contact and moving function between the device and the ground, the highway wheel enables the device to move smoothly on the flat road surface such as highway, expanding the application range and flexibility of the device, the image acquisition height adjusting assembly can flexibly adjust the acquisition height of the 2D linear array camera and the 3D camera to adapt to the inspection needs of different track infrastructures, and by adjusting the height, the field of view and acquisition angle of the camera can be optimized, thereby improving the quality and accuracy of image acquisition.
[0009] Preferably, the image acquisition height adjusting assembly comprises: four rectangular mounting blocks, the four rectangular mounting blocks are fixedly installed on one side of the two main bodies respectively, a sliding groove is formed in one side of each of the four rectangular mounting blocks, a first mounting groove is formed in the inner sides of the two sides of each of the four sliding grooves, a synchronous motor is fixedly installed in the inner part of each of the eight first mounting grooves, and a threaded column is fixedly installed between the two synchronous motors.
[0010] By adopting the above technical scheme, the four rectangular mounting blocks are set as the support basis of the whole image acquisition height adjusting assembly, fixedly installed on one side of the main body, ensuring the stability and reliability of the height adjusting assembly, the sliding groove enables the mounting plate and the fusion device thereon to move smoothly and stably in the vertical direction, improving the flexibility of adjustment and ensuring that the fusion device can maintain a stable acquisition state during the adjustment process, the first mounting groove provides space for the installation of the synchronous motor, the synchronous motor rotates through the rotating shaft to drive the rotation of the threaded column, the threaded column cooperates with the first threaded hole on the mounting plate to convert the rotary motion of the motor into the linear motion of the mounting plate, thereby realizing the accurate adjustment of the height of the fusion device.
[0011] Preferably, the image acquisition height adjusting assembly further comprises a mounting plate movably sleeved in the two bodies, two sliding blocks are fixedly installed on the two sides of the mounting plate, four sliding blocks are movably sleeved in the four sliding grooves, first threaded holes are formed in the top of the four sliding blocks, the first threaded holes are in threaded connection with the threaded columns, and the bottom of the mounting plate is fixedly installed with the fusion device.
[0012] By adopting the above technical scheme, the mounting plate can smoothly slide along the sliding groove by setting the sliding block, and at the same time, the weight and force generated during operation of the fusion device are borne. The mounting plate serves as the mounting base of the fusion device, and height adjustment is realized through the cooperation of the sliding block and the sliding groove. The fusion device integrates sensors such as 2D linear array cameras and 3D cameras, and can realize high-definition image acquisition of track infrastructure, providing timely and accurate data support for track operation and maintenance.
[0013] Preferably, two round holes are formed in one side of the two bodies, bearings are fixedly installed in the inner sides of the four round holes, track wheels are arranged between the two bearings, plug rods are fixedly installed on the inner circular walls of the inner rings of the four bearings, and encoders are fixedly installed at one end of the plug rods.
[0014] By adopting the above technical scheme, the bearings are provided with accurate positions for installation. Bearings are important components for connecting track wheels and bodies. Track wheels are in direct contact with tracks and are responsible for the movement and positioning of the device. The plug rods firmly connect the track wheels to the inner rings of the bearings, ensuring the firm connection between the track wheels and the bodies. The encoders are installed at one end of the plug rods and are used to accurately measure the rotation angle and speed of the track wheels.
[0015] Preferably, two second threaded holes are formed in one side of the body, two connecting rods are arranged on one side of the body, connecting blocks are fixedly installed on the top of the two connecting rods, insertion holes are formed in one side of the two connecting blocks, bolts are arranged on one side of the two connecting blocks, the bolts pass through the insertion holes and are in threaded connection with the second threaded holes, two connecting plates are fixedly installed on the bottom of the two connecting rods, and an auxiliary wheel is arranged between the two connecting plates.
[0016] By adopting the technical scheme, the second threaded hole is arranged, thereby providing an accurate position for installation of the bolt, the connecting rod serves as a bridge connecting the connecting block, the connecting plate and the auxiliary wheel and the like components, and plays a role of transmitting force and torque, the connecting block provides a basis for installation of the bolt, the insertion hole arranged on the connecting block is matched with the bolt, the bolt is threadedly connected with the second threaded hole, thereby achieving firm connection between the connecting rod and the main body, the insertion hole provides a channel for the bolt to pass through, the connecting plate provides a basis for installation of the auxiliary wheel, and the auxiliary wheel is arranged between the two connecting plates and serves to increase stability and supporting force of the device.
[0017] Preferably, a placing plate is fixedly installed between the two main bodies, an outdoor power supply is fixedly installed at the top of the placing plate, and a workstation support is fixedly installed between the two main bodies, and an information acquisition display is fixedly installed at one end of the workstation support.
[0018] By adopting the technical scheme, the placing plate is arranged, thereby providing a stable and safe installation platform for the outdoor power supply, the outdoor power supply serves as a power supply source of the entire rail transit equipment operation and maintenance device, and provides stable power support for all electronic equipment, the workstation support provides a suitable installation position for the information acquisition display, so as to ensure that an operator can comfortably and efficiently view and operate the information acquisition display, and the information acquisition display can display key information such as a running state of the device, collected image data and fault alarm information in real time.
[0019] In summary, the utility model mainly has the following beneficial effects:
[0020] The main body is arranged as a structural basis of the device, and bears and connects all other components, the plurality of fixing rods are used for connecting the two main bodies, the connecting plate serves as a bridge connecting the main body and the road wheel, the road wheel enables the device to smoothly move on a flat road surface such as a road, the image acquisition height adjusting assembly can flexibly adjust the acquisition height of the 2D linear array camera and the 3D camera to adapt to the inspection requirements of different rail infrastructure, the four rectangular mounting blocks are arranged as a support basis of the entire image acquisition height adjusting assembly, the sliding groove enables the mounting plate and the fusion device thereon to smoothly and stably move in the vertical direction, the first mounting groove provides a space for installation of the synchronous motor, the synchronous motor rotates through the rotating shaft to drive rotation of the threaded column, the threaded column is matched with the first threaded hole on the mounting plate, the rotary motion of the motor is converted into linear motion of the mounting plate, thereby realizing accurate adjustment of the height of the fusion device, the sliding block is arranged to enable the mounting plate to stably slide along the sliding groove, and the mounting plate serves as an installation base body of the fusion device, the fusion device integrates the 2D linear array camera, the 3D camera and the like sensors, and can realize high-definition image acquisition of the rail infrastructure, thereby providing timely and accurate data support for rail operation and maintenance.
[0021] The round hole is arranged, a bearing is provided with a precise position for installation, the bearing is an important part for connecting the track wheel and the main body, the track wheel is directly contacted with the track and is responsible for movement and positioning of the device, the inserting rod is used for firmly connecting the track wheel on the inner ring of the bearing, the encoder is used for accurately measuring the rotating angle and speed of the track wheel, the second threaded hole is arranged, a precise position is provided for installation of the bolt, the connecting rod is used as a bridge for connecting the main body, the connecting block, the connecting plate and the auxiliary wheel and the like, the connecting block is used for providing a basis for installation of the bolt, the inserting hole arranged on the connecting block is matched with the bolt, the bolt is screwed with the second threaded hole, thereby achieving firm connection between the connecting rod and the main body, the inserting hole provides a channel for the bolt, the connecting plate provides a basis for installation of the auxiliary wheel, the auxiliary wheel is arranged between the two connecting plates and is used for increasing stability and supporting force of the device, the placing plate is arranged, thereby providing a stable and safe installation platform for the outdoor power supply, the outdoor power supply is used as a power supply source of the whole track transportation equipment operation and maintenance device, the workstation support provides a suitable installation position for the information acquisition display, and the information acquisition display can display key information such as running state of the device, collected image data and fault alarm information in real time. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0023] Figure 2 It is a schematic diagram of the main body structure of the utility model;
[0024] Figure 3 It is a schematic diagram of the rectangular mounting block structure of the utility model;
[0025] Figure 4 It is a schematic diagram of the mounting plate structure of the utility model;
[0026] Figure 5 It is a schematic diagram of the track wheel structure of the utility model;
[0027] Figure 6 It is a schematic diagram of the connecting rod structure of the utility model.
[0028] Fig. 1, main body; 2, fixed rod; 3, link plate; 4, highway wheel; 5, rectangular mounting block; 6, sliding groove; 7, first installation groove; 8, synchronous motor; 9, threaded column; 10, mounting plate; 11, sliding block; 12, first threaded hole; 13, fusion device; 14, placing plate; 15, outdoor power supply; 16, workstation support; 17, information acquisition display; 18, round hole; 19, bearing; 20, track wheel; 21, inserting rod; 22, second threaded hole; 23, connecting rod; 24, connecting block; 25, inserting hole; 26, bolt; 27, connecting plate; 28, auxiliary wheel; 29, encoder. DETAILED DESCRIPTION
[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.
[0030] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4The utility model discloses a rail transit equipment operation and maintenance device, including: two main body 1, a plurality of fixed rod 2 fixed mounting between two main body 1, four link plates 3 are fixedly installed respectively at the bottom of two main body 1, four highway wheels 4 are fixedly installed respectively at the bottom of four link plates 3.The image acquisition height adjusting assembly is arranged on one side of each of the two main bodies 1, and is used for adjusting the height. The main body 1 is arranged as a structural basis of the device, bears and connects all other components, and ensures the stability and integration of the whole system. The fixing rods 2 are used for connecting the two main bodies 1, and increase the rigidity and stability of the whole device. The connecting plate 3 serves as a bridge connecting the main body 1 and the road wheels 4, and realizes stable contact and movement function between the device and the ground. The road wheels 4 enable the device to smoothly move on the flat road surface such as a highway, and expand the application range and flexibility of the device. The image acquisition height adjusting assembly can flexibly adjust the acquisition height of the 2D linear array camera and the 3D camera to adapt to the inspection requirements of different track infrastructures. By adjusting the height, the field of view and the acquisition angle of the camera can be optimized, thereby improving the quality and accuracy of image acquisition. The image acquisition height adjusting assembly comprises four rectangular mounting blocks 5, two rectangular mounting blocks 5 are fixedly arranged on one side of each of the two main bodies 1, four sliding grooves 6 are arranged on one side of each of the four rectangular mounting blocks 5, eight first mounting grooves 7 are arranged on both sides of the inner part of each of the four sliding grooves 6, eight synchronous motors 8 are fixedly arranged in the eight first mounting grooves 7, respectively, a threaded column 9 is fixedly arranged between the two synchronous motors 8, and four rectangular mounting blocks 5 are arranged as the support basis of the whole image acquisition height adjusting assembly, are fixedly arranged on one side of the main body 1, and ensure the stability and reliability of the height adjusting assembly. The sliding groove 6 enables the mounting plate 10 and the fusion device 13 arranged thereon to smoothly and stably move in the vertical direction, improves the flexibility of adjustment, and also ensures that the fusion device 13 can maintain a stable acquisition state during the adjustment process. The first mounting groove 7 provides space for the installation of the synchronous motor 8. The synchronous motor 8 rotates through the rotating shaft to drive the rotation of the threaded column 9. The threaded column 9 is matched with the first threaded hole 12 on the mounting plate 10, converts the rotary motion of the motor into the linear motion of the mounting plate 10, and thus realizes the accurate adjustment of the height of the fusion device 13. The image acquisition height adjusting assembly further comprises a mounting plate 10, the mounting plate 10 is movably sleeved on the inner part of each of the two main bodies 1, four sliding blocks 11 are fixedly arranged on both sides of the mounting plate 10, the four sliding blocks 11 are movably sleeved in the four sliding grooves 6, respectively, four first threaded holes 12 are arranged on the top of each of the four sliding blocks 11, the first threaded hole 12 is in threaded connection with the threaded column 9, and the fusion device 13 is fixedly arranged on the bottom of the mounting plate 10. The sliding block 11 enables the mounting plate 10 to stably slide along the sliding groove 6, and bears the weight and force generated during the operation of the fusion device 13. The mounting plate 10 serves as the installation matrix of the fusion device 13, and realizes the height adjustment through the cooperation of the sliding block 11 and the sliding groove 6. The fusion device 13 integrates sensors such as the 2D linear array camera and the 3D camera, and can realize high-definition image acquisition of the track infrastructure, thereby providing timely and accurate data support for track operation and maintenance.
[0031] Reference Figure 1 , Figure 2 , Figure 5 and Figure 6, four said round holes 18 are respectively arranged on one side of two main bodies 1, four said bearings 19 are respectively fixedly installed in the interiors of four round holes 18, said track wheels 20 are arranged between two bearings 19, four said inserting rods 21 are respectively fixedly installed on two sides of two track wheels 20, four said inserting rods 21 are respectively fixedly installed on the inner circular walls of the inner rings of four bearings 19, said encoders 29 are fixedly installed on one end of inserting rods 21, the arrangement of round holes 18 provides accurate positions for the installation of bearings 19, bearings 19 are important components for connecting track wheels 20 and main bodies 1, track wheels 20 are directly contacted with tracks, responsible for the movement and positioning of the device, inserting rods 21 firmly connect track wheels 20 on the inner rings of bearings 19, ensuring the firm connection between track wheels 20 and main bodies 1, encoders 29 are installed on one end of inserting rods 21, used for accurately measuring the rotation angle and speed of track wheels 20, two said second threaded holes 22 are arranged on one side of main bodies 1, two said connecting rods 23 are arranged on one side of main bodies 1, two said connecting blocks 24 are respectively fixedly installed on the top of two connecting rods 23, two said insertion holes 25 are respectively arranged on one side of two connecting blocks 24, two said bolts 26 are respectively arranged on one side of two connecting blocks 24, said bolts 26 penetrate insertion holes 25 and are threadedly connected with second threaded holes 22, two said connecting plates 27 are fixedly installed on the bottom of two connecting rods 23, said auxiliary wheels 28 are arranged between two connecting plates 27, the arrangement of second threaded holes 22 provides accurate positions for the installation of bolts 26, connecting rods 23 act as bridges for connecting main bodies 1 with connecting blocks 24, connecting plates 27 and auxiliary wheels 28, etc., play the role of transmitting force and torque, connecting blocks 24 provide a basis for the installation of bolts 26, insertion holes 25 arranged on connecting blocks 24 cooperate with bolts 26, through the threaded connection of bolts 26 with second threaded holes 22, the firm connection between connecting rods 23 and main bodies 1 is realized, insertion holes 25 provide channels for the penetration of bolts 26, connecting plates 27 provide a basis for the installation of auxiliary wheels 28, auxiliary wheels 28 are arranged between two connecting plates 27, used for increasing the stability and supporting force of the device, said placing plate 14 is fixedly installed between two main bodies 1, said outdoor power supply 15 is fixedly installed on the top of placing plate 14, said workstation support 16 is fixedly installed between two main bodies 1, said information acquisition display 17 is fixedly installed on one end of workstation support 16, the arrangement of placing plate 14 provides a stable and safe installation platform for outdoor power supply 15, outdoor power supply 15 serves as the power supply source of the entire rail transit equipment operation and maintenance device, provides stable power support for all electronic equipment, workstation support 16 provides a suitable installation position for information acquisition display 17, to ensure that operating personnel can comfortably and efficiently view and operate information acquisition display 17, information acquisition display 17 can display real-time device running status, collected image data, fault alarm information and other key information.
[0032] Working principle: please refer to Figures 1-6 As shown in the figure, in use, first place two main bodies 1 on the track, so that the track wheels 20 are in contact with the track, then the connecting rod 23 is fixed on the main body 1 through the bolt 26, the auxiliary wheel 28 is placed on the other track, which plays a supporting and enhancing stability role, then the outdoor power supply 15 is started to provide power support for the whole device, then the synchronous motor 8 can be started to drive the threaded column 9 to rotate, in turn drive the slider 11 and the mounting plate 10 and the fusion device 13 connected thereto to adjust the height, the fusion device 13 includes synchronous encoder pulse distributor, laser, 2D linear array camera, 3D camera and other components, after adjusting the height, the operator can push the device along the track, in this process, the encoder 29 rotates coaxially with the track wheel 20, and a pulse signal will be emitted every time it rotates a certain angle, these pulse signals are used as external trigger signals and are distributed to the 2D linear array camera and the 3D camera, when the encoder 29 rotates and generates a pulse, the camera will be triggered to collect images, in this way, the camera can accurately synchronize the collection according to the pulse signal of the encoder 29, ensuring that each collected image data corresponds to a specific position on the track, in the moving process, the fusion device 13 will collect the image data of the track infrastructure in real time, and transmit the data to the information collection display 17 for display, the operator can view the running state of the device, the collected image data and any fault alarm information through the information collection display 17 in real time, according to the collected image data and alarm information, the operator can judge the health status of the track infrastructure, and take corresponding operation and maintenance measures.
[0033] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A device for the operation and maintenance of rail transit equipment, characterized in that, include: Two main bodies (1), a number of fixing rods (2) are fixedly installed between the two main bodies (1), two connecting plates (3) are fixedly installed at the bottom of the two main bodies (1), and road wheels (4) are fixedly installed at the bottom of the four connecting plates (3); The image acquisition height adjustment components are arranged on one side of the two main bodies (1) respectively, and are used to adjust the height.
2. The maintenance device for rail transit equipment according to claim 1, characterized in that, The image acquisition height adjustment component includes: Four rectangular mounting blocks (5) are fixedly installed on one side of the two main bodies (1). Each of the four rectangular mounting blocks (5) has a sliding groove (6) on one side. Each of the four sliding grooves (6) has a first mounting groove (7) on both sides inside. Each of the eight first mounting grooves (7) has a synchronous motor (8) fixedly installed inside. A threaded column (9) is fixedly installed between the two synchronous motors (8).
3. A maintenance device for rail transit equipment according to claim 2, characterized in that, The image acquisition height adjustment component also includes: Mounting plate (10) is movably fitted inside the two main bodies (1). Two sliders (11) are fixedly installed on both sides of the mounting plate (10). The four sliders (11) are movably fitted inside the four sliding grooves (6). The top of the four sliders (11) is provided with a first threaded hole (12). The first threaded hole (12) is threadedly connected to the threaded post (9). A fusion device (13) is fixedly installed at the bottom of the mounting plate (10).
4. A maintenance device for rail transit equipment according to claim 3, characterized in that, Two circular holes (18) are opened on one side of each of the two main bodies (1). Bearings (19) are fixedly installed inside the four circular holes (18). A track wheel (20) is provided between the two bearings (19). Insert rods (21) are fixedly installed on both sides of the two track wheels (20). The four insert rods (21) are fixedly installed on the inner circular wall of the inner ring of the four bearings (19). An encoder (29) is fixedly installed at one end of the insert rod (21).
5. A maintenance device for rail transit equipment according to claim 4, characterized in that, Two second threaded holes (22) are opened on one side of the main body (1), and two connecting rods (23) are provided on one side of the main body (1). Connecting blocks (24) are fixedly installed on the top of the two connecting rods (23), and insertion holes (25) are opened on one side of the two connecting blocks (24). Bolts (26) are provided on one side of the two connecting blocks (24). The bolts (26) pass through the insertion holes (25) and are threadedly connected to the second threaded holes (22). Two connecting plates (27) are fixedly installed at the bottom of the two connecting rods (23), and auxiliary wheels (28) are provided between the two connecting plates (27).
6. A maintenance device for rail transit equipment according to claim 5, characterized in that, A placement plate (14) is fixedly installed between the two main bodies (1), an outdoor power supply (15) is fixedly installed on the top of the placement plate (14), a workstation bracket (16) is fixedly installed between the two main bodies (1), and an information acquisition display (17) is fixedly installed at one end of the workstation bracket (16).
Citation Information
Patent Citations
Lightweight track inspection vehicle
CN116373922A