Conveying device for logistics loading and unloading
The conveyor system addresses the inflexibility and space occupation issues of existing systems by incorporating an adjustable lift frame and support structure, enhancing adaptability and efficiency in material handling.
Patent Information
- Application Number
- CN202422481017.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-10-14
AI Technical Summary
The existing logistics and conveying devices cannot adjust the height according to demand and occupy a large space, affecting the flexibility of use and other work of the equipment.
A logistics loading and unloading conveying device is designed, including a base frame, a lifting frame and a support frame. The height and angle of the lifting frame and the support frame are controlled by adjusting the screw, and the height and angle adjustment is achieved in combination with the annular belt to meet the needs of different cars.
The height and angle of the conveyor device are adjustable, adapting to the cargo transportation needs of different cars, improving the flexibility of use, reducing space, and enhancing the adaptability of the equipment.
Smart Images

Figure CN223101736U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of conveying, in particular to a conveying device for logistics loading and unloading. Background Art
[0002] In logistics transportation, in order to improve the efficiency of goods loading and unloading, a conveying device is usually used to realize the short-distance continuous transportation of goods, that is, the conveying device can continuously convey goods from one position to another position. Compared with manual handling, the loading and unloading speed of goods is greatly improved, and the loading and unloading time cost is reduced.
[0003] At present, from the publicly available prior art and actual application, it can be seen that the commonly used conveying device in logistics transportation is a conveyor belt, which is composed of a rubber or plastic belt and a driving device, and is suitable for conveying goods of various shapes and sizes. The conveyor belt applied to logistics can refer to a logistics loading and unloading conveyor disclosed in a Chinese patent with the publication number CN118083618B, which includes a telescopic conveyor, a short conveyor, a boom frame, a winding mechanism, a jaw connected to the cable of the winding mechanism, a main controller and a remote controller. The short conveyor is rotatably arranged at the front end of the telescopic conveyor. The booms on both sides of the boom frame include a strut I and a strut II connected by a hinge; the winding mechanism can be reciprocally slidably arranged on the strut II through a driving mechanism; the jaw is provided with a clamping operation button and a winding mechanism control button; a transition plate I extending downward is arranged at the front end of the short conveyor. The conveyor belt provided by the above patent can realize semi-automatic loading and unloading of goods, has low equipment cost, flexible operation, and can be used for multiple purposes, especially for unloading operations of bagged goods.
[0004] From the technical solution and drawings disclosed in the above patent, it can be seen that the height of the telescopic conveyor is fixed, that is, its height cannot be adjusted according to actual needs. Then, when using the telescopic conveyor to unload goods from a transport vehicle or convey goods to a transport vehicle, other equipment (such as a forklift) is still needed to adjust the height of the telescopic conveyor so that the telescopic end can extend into the transport vehicle. This operation causes the forklift to be unable to perform other tasks, affecting its completion of other tasks. In addition, the length of the main body (i.e., the non-telescopic part) of the telescopic conveyor is fixed. When the telescopic conveyor is not in use, even in the fully retracted state, it still occupies a large space, and because it is not convenient to transfer, it is not conducive to the placement of other equipment. Summary of the Utility Model
[0005] The purpose of the utility model is to provide a conveying device for logistics loading and unloading, aiming to improve the problems that the conveyor belt used for logistics is inconvenient to adjust the height and occupies a large space.
[0006] The present utility model is implemented as follows: A conveying device for logistics loading and unloading includes a chassis. An elevating frame is arranged on the chassis, and the elevating frame can be lifted relative to the chassis. Two sets of support plates are arranged at the top of the elevating frame. The two sets of support plates can be adjusted relative to the elevating frame, and a support frame is adjustably arranged between the two sets of support plates. The end of the support frame can be folded and stored, and an endless belt is arranged on the support frame. A driving rod penetrates through the bottom of the endless belt. The driving rod is installed at the top of the chassis and is connected to a motor at its end.
[0007] Preferably, the vertical section of the chassis is set as a pipe body, and a first sliding hole is arranged on the side wall of the pipe body. A second sliding hole is arranged on the vertical section of the elevating frame. The driving rod penetrates through the second sliding hole, and the lower end of the vertical section of the elevating frame is inserted into the pipe body of the chassis. A cross plate installed at the bottom of the elevating frame penetrates through the first sliding hole. An adjusting screw rod is connected through a bearing and penetrates through the cross plate of the elevating frame. The lower end of the adjusting screw rod is threaded through the chassis.
[0008] Preferably, a support plate is arranged at the bottom of the chassis. A battery is arranged on the support plate. A pressing plate is arranged on the side of the battery. A threaded column is arranged on the side of the pressing plate. The threaded column is threaded through the chassis. A control box is arranged on the chassis. The control box is connected to the battery and the motor. Wheel bodies are arranged at the end corners below the chassis.
[0009] Preferably, the support frame includes two first side beams, two second side beams, and multiple supporting rollers. The two first side beams are arranged in parallel. The two second side beams are also arranged in parallel. A connecting mechanism is arranged at the adjacent ends of the first side beam and the second side beam. Multiple supporting rollers are arranged between the two side beams.
[0010] Preferably, the connecting mechanism includes a second connecting plate and two first connecting plates. The two first connecting plates are arranged in parallel, and threaded holes and multiple jacks are arranged at the ends close to each other. The second connecting plate is arranged on the side of the intersection of the two first connecting plates, and two second bolts penetrate through both ends and a plug rod is fixedly arranged. The plug rod is inserted into the jack, and the end of the second bolt is threaded into the threaded hole.
[0011] Preferably, buckle grooves are arranged on the first side beam and the second side beam. The buckle grooves are arranged along the length direction of the side beam and the ends are open. A first buckle plate is connected by a first bolt on the side of the first connecting plate. The first buckle plate is arranged in the buckle groove.
[0012] Preferably, the second connecting plate is set as a T-shaped structure, and a sleeve is connected through a bearing and penetrates through the top of the second connecting plate. A central shaft penetrates through the sleeve. A limiting roller is arranged at the end of the central shaft. The limiting roller can be arranged at the edge of the endless belt.
[0013] Preferably, two support plates are sleeved on the end shafts of the lifting frame, and a second buckle plate is connected by a fourth bolt on the side close to each other, and the second buckle plate is installed in the buckle groove of the side beam.
[0014] Preferably, an arc-shaped hole and a plurality of limiting holes are arranged on the support plate. The plurality of limiting holes are arranged in a surrounding manner and are located on the side of the arc-shaped hole. A third bolt is penetrated through the arc-shaped hole, and the end of the third bolt is threadedly inserted into the lifting frame. A ring plate is arranged on the side of the support plate. The ring plate is sleeved on the short rod of the lifting frame, and a limiting rod is fixedly arranged on the side. The limiting rod is inserted into a certain limiting hole.
[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0016] 1. The present utility model is provided with a chassis, and a lifting frame is arranged above the chassis, and a support frame is arranged on the top of the lifting frame, and an annular belt is sleeved outside the support frame. The lifting of the lifting frame relative to the chassis can be controlled by rotating the adjusting screw rod, and then the height of the support frame and the annular belt can be adjusted to adapt to carriages of different heights, so that the end of the annular belt can be extended into the carriage according to the cargo transportation requirements, providing convenience for realizing the movement of the cargo between the carriage and the storage point.
[0017] 2. The present utility model connects the lifting frame and the support frame through the support plate, and at the same time, the support frame and the support plate are adjustably connected. Therefore, the relative positions of the support plate and the support frame can be adjusted according to actual needs, providing support for extending the end of the support frame and the annular belt into the carriage, outputting the cargo at different positions in the carriage, or stacking the cargo at different positions in the carriage.
[0018] 3. The present utility model connects the first side beam and the second side beam through the connecting mechanism, which can realize the stable connection of the first side beam and the second side beam, and provides support for adjusting the included angle between the first side beam and the second side beam according to requirements, so as to make the device adapt to different working environments. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 is the structural schematic diagram of the whole of the present utility model;
[0020] Figure 2 is the structural schematic diagram of the support frame of the present utility model;
[0021] Figure 3 is the structural schematic diagram of the connecting mechanism of the present utility model;
[0022] Figure 4 is the structural schematic diagram of the first connecting plate of the present utility model;
[0023] Figure 5 is the structural schematic diagram of the second connecting plate of the present utility model;
[0024] Figure 6 is a schematic structural diagram of the limiting roller of the present utility model;
[0025] Figure 7 is a schematic structural diagram of the chassis and the lifting frame of the present utility model;
[0026] Figure 8 is a schematic structural diagram of the chassis of the present utility model;
[0027] Figure 9 is a schematic structural diagram of the lifting frame of the present utility model;
[0028] Figure 10 is the first schematic diagram of the support plate structure of the present utility model;
[0029] Figure 11 is the second schematic diagram of the support plate structure of the present utility model;
[0030] Figure 12 is a schematic structural diagram of the annular plate of the present utility model.
[0031] In the figure: 1, chassis; 11, wheel body; 12, battery; 13, control box; 14, drive rod; 15, support plate; 16, first sliding hole; 17, pressing plate; 18, threaded column; 2, annular belt; 3, support frame; 31, first side beam; 32, supporting roller; 33, second side beam; 34, buckle groove; 4, connecting mechanism; 41, first connecting plate; 411, first bolt; 412, jack; 413, first buckle plate; 42, second connecting plate; 421, second bolt; 422, inserting rod; 423, limiting roller; 424, central axis; 425, sleeve; 426, anti-slip layer; 5, lifting frame; 51, second sliding hole; 52, short rod; 53, adjusting screw; 6, support plate; 61, second buckle plate; 62, arc-shaped hole; 63, limiting hole; 64, third bolt; 65, fourth bolt; 7, annular plate; 71, limiting rod. Detailed implementation manners
[0032] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0033] The following will be further described in conjunction with the drawings and specific embodiments:
[0034] Embodiment 1
[0035] In order to adjust the height of the conveyor belt according to the height of the carriage of the transporter during material handling, this embodiment provides a new conveying device. When using this conveying device, its height can be adjusted according to requirements, so as to facilitate inserting the end of the conveying device into the carriage of the transporter, providing convenience for transporting goods between the transport vehicle and the storage place. In the following text, the structure of the conveying device will be specifically introduced.
[0036] As Figure 1 , Figure 7 , Figure 8 , Figure 9 shown, specifically, the conveying device includes a chassis 1, a lifting frame 5, a support frame 3, and an endless belt 2. At the end corners below the chassis 1, wheel bodies 11 are provided. The wheel bodies 11 can be set as universal wheels, so that when using this device, the staff can push the device to move. The vertical section of the chassis 1 is set as a pipe body, and a first sliding hole 16 is provided on the side wall of the pipe body. The first sliding hole 16 is arranged along the height direction of the pipe body. A first cross plate is connected between the two pipe bodies, and a threaded hole is provided on the first cross plate. The lower end of the vertical section of the lifting frame 5 is inserted into the pipe body of the chassis 1. The second cross plate installed at the bottom of the lifting frame 5 penetrates through the first sliding hole 16. A regulating screw 53 is connected through the second cross plate by a bearing. The lower end of the regulating screw 53 is threaded through the chassis 1. Therefore, under the action of the regulating screw 53, the lifting frame 5 can be stably installed relative to the chassis 1, and when needed, the regulating screw 53 can be rotated to control the lifting of the lifting frame 5 relative to the chassis 1, providing convenience for adjusting the height of the endless belt 2.
[0037] As Figure 1 , Figure 7 shown, two sets of support plates 6 are provided at the top of the lifting frame 5. The two sets of support plates 6 can be adjustably arranged at the tops of the two vertical sections of the lifting frame 5. The support frame 3 is arranged between the two sets of support plates 6 and can be stably installed relative to the support plates 6. With this setting, the inclination angle of the support frame 3 can be adjusted by controlling the rotation of the support plates 6 around the axis. Since the endless belt 2 is sleeved on the support frame 3, the inclination angle of the endless belt 2 can be adjusted synchronously, providing convenience for completing the transportation of goods.
[0038] As Figure 1 , Figure 7 , Figure 9As shown in the figure, in order to control the rotation of the annular belt 2, a driving rod 14 is provided at the top of the chassis 1, and a motor is provided outside the chassis 1, and the motor can control the rotation of the driving rod 14. At the same time, the driving rod 14 is located inside the annular belt 2, and presses down the annular belt 2 to be in a straightened state, thereby controlling the rotation of the annular belt 2, which facilitates the transportation of goods through the work of the annular belt 2. In order to avoid the existence of the lifting frame 5 affecting the installation of the driving rod 14, a second sliding hole 51 is provided on the vertical section of the lifting frame 5, and the second sliding hole 51 is arranged along the height direction of the lifting frame 5, and the driving rod 14 penetrates through the second sliding hole 51, so as to avoid the existence of the driving rod 14 affecting the lifting of the lifting frame 5. A bearing seat can be sleeved at the end of the driving rod 14, and the bearing seat can be connected to the chassis 1 by bolts. Therefore, under the action of the bearing seat, the driving rod 14 can rotate with low friction. In addition, the height of the driving rod 14 can also be changed by adjusting the position of the bearing seat to provide support for keeping the annular belt 2 in a straightened state. In addition, the bearing seat can also be fixedly arranged on the chassis 1 according to requirements.
[0039] As Figure 7 shown, in order to enable the device to work stably, a support plate 15 is provided at the bottom of the chassis 1, and a battery 12 is provided on the support plate 15. The number of batteries 12 is determined according to actual requirements, and adjacent batteries 12 are arranged in contact with each other. The battery 12 is arranged at the bottom of the chassis 1, reducing the center of the device and enhancing the stability of the device. In addition, a pressing plate 17 is provided on the side of the battery 12, and a threaded column 18 is provided on the side of the pressing plate 17. The threaded column 18 penetrates through the chassis 1 in a threaded manner. Therefore, the movement of the pressing plate 17 can be controlled by rotating the threaded column 18, forcing the pressing plate 17 to press against the battery 12, and controlling the battery 12 to be stably placed on the support plate 15. A control box 13 is provided on the chassis 1, and the control box 13 is connected to the battery 12 and the motor. Therefore, the motor can be controlled to work through the control box 13.
[0040] As Figure 2 , Figure 10 shown, in order to be able to adjust the inclination angles of the support frame 3 and the annular belt 2 to realize the movement of goods between the carriage and the storage point, the support frame 3 includes side beams and a plurality of supporting rollers 32. The plurality of supporting rollers 32 are arranged between parallel side beams to support the annular belt 2 to carry goods for movement. A snap groove 34 is provided on the side beam, and the snap groove 34 is arranged along the length direction of the side beam, and the end is provided with an opening. A second snap plate 61 is connected to the side of the two support plates 6 close to each other by a fourth bolt 65. The second snap plate 61 is installed in the snap groove 34 of the side beam. Therefore, under the cooperation of the second snap plate 61 and the snap groove 34, the support plate 6 is stably installed on the side of the side beam. The two support plates 6 are sleeved on the two end shafts of the lifting frame 5. Therefore, the support plate 6 can be rotated around the shaft to change the inclination angles of the support frame 3 and the annular belt 2.
[0041] AsFigure 9 , Figure 10 , Figure 11 , Figure 12 As shown in Figure 9 , Figure 10 , Figure 11 , and Figure 12 , in order to stably place the support frame 3 and the annular belt 2 after adjusting the inclination angle, an arc-shaped hole 62 and a plurality of limiting holes 63 are provided on the support plate 6. The plurality of limiting holes 63 are arranged in a surrounding manner and are located on the side of the arc-shaped hole 62. A third bolt 64 is penetrated through the arc-shaped hole 62, and the end of the third bolt 64 is threadedly inserted into the lifting frame 5. Therefore, after adjusting the inclination angle of the support frame 3, the support plate 6 can be squeezed by rotating the third bolt 64 to increase the friction force between the support plate 6 and the lifting frame 5, thereby stably placing the support frame 3. In addition, an annular plate 7 can be provided on the side of the support plate 6. The annular plate 7 is sleeved on the short rod 52 of the lifting frame 5, and a limiting rod 71 is fixedly provided on the side. Since the annular plate 7 is stably placed, when the limiting rod 71 is inserted into a certain limiting hole 63, the stable placement of the support plate 6 can be restricted.
[0042] Embodiment 2
[0043] As Figure 2 shown, on the basis of Embodiment 1, in order to be able to adjust the state of the end of the annular belt 2 according to requirements, the support frame 3 includes two first side beams 31, two second side beams 33, and a plurality of supporting rollers 32. The two first side beams 31 are arranged in parallel, the two second side beams 33 are also arranged in parallel, and the plurality of supporting rollers 32 are arranged between the two side beams. A connecting mechanism 4 is provided at the adjacent ends of the first side beam 31 and the second side beam 33. Under the action of the connecting mechanism 4, the first side beam 31 and the second side beam 33 are stably connected, and support is provided for adjusting the included angle between the first side beam 31 and the second side beam 33 according to requirements.
[0044] As Figure 3 , Figure 4 , Figure 5 shown, specifically, the connecting mechanism 4 includes a second connecting plate 42 and two first connecting plates 41. The second connecting plate 42 is arranged in a T-shaped structure. The two first connecting plates 41 are arranged in parallel on the side of the second connecting plate 42, and threaded holes and a plurality of insertion holes 412 are provided at the mutually close ends. The second connecting plate 42 faces the intersection of the two first connecting plates 41, and second bolts 421 are penetrated through both ends and insertion rods 422 are fixedly provided. When the insertion rods 422 are inserted into the insertion holes 412, the first connecting plate 41 and the second connecting plate 42 can be kept relatively stationary. The ends of the second bolts 421 are threadedly inserted into the threaded holes, and it can be controlled whether the insertion rods 422 are inserted into the insertion holes 412.
[0045] As Figure 4As shown in the figure, in order to stably install the two first connecting plates 41 on the first side beam 31 and the second side beam 33 respectively, a first buckle plate 413 is connected and arranged on the side of the first connecting plate 41 through a first bolt 411. The first buckle plate 413 is arranged in the buckle groove 34. Therefore, the stable and detachable connection between the first connecting plate 41 and the side beam is realized.
[0046] As Figure 6 As shown in the figure, in order to make the annular belt 2 fit the support frame 3 when adjusting the inclination angle of the annular belt 2, a sleeve 425 is penetrated and arranged at the top of the second connecting plate 42 through a bearing. A central shaft 424 is penetrated and arranged at the sleeve 425. A limiting roller 423 is arranged at the end of the central shaft 424. The limiting roller 423 can be arranged at the edge of the annular belt 2. Therefore, the position of the annular belt 2 can be limited under the action of the limiting roller 423, so that it is placed in a manner that fits the support frame 3. In order to enable the central shaft 424 to be stably placed relative to the sleeve 425, an anti-slip layer 426 is arranged at the junction of the central shaft 424 and the sleeve 425 to increase the resistance of the central shaft 424 moving relative to the sleeve 425, and at the same time, it is convenient to control the movement of the central shaft 424 relative to the sleeve 425. The end of the sleeve 425 can also protrude from the second connecting plate 42, and a bolt is arranged at the protruding end. The sleeve 425 and the central shaft 424 are connected through the bolt to realize the detachable connection of the central shaft 424.
[0047] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A conveying device for logistics loading and unloading, characterized in that, It includes a chassis (1), on which a lifting frame (5) is arranged. The lifting frame (5) can move up and down relative to the chassis (1). At the top of the lifting frame (5), two sets of support plates (6) are arranged. The two sets of support plates (6) can be adjusted relative to the lifting frame (5), and a support frame (3) is adjustably arranged between the two sets of support plates (6). The end of the support frame (3) can be folded and stored, and an annular belt (2) is arranged on the support frame (3). A driving rod (14) is arranged through the bottom of the annular belt (2). The driving rod (14) is installed on the top of the chassis (1) and is connected to a motor at its end.
2. The conveying device for logistics loading and unloading according to claim 1, characterized in that, The vertical section of the chassis (1) is set as a pipe body, and a first sliding hole (16) is arranged on the side wall of the pipe body. A second sliding hole (51) is arranged on the vertical section of the lifting frame (5). The driving rod (14) is arranged through the second sliding hole (51), and the lower end of the vertical section of the lifting frame (5) is inserted into the pipe body of the chassis (1). The cross plate installed at the bottom of the lifting frame (5) is arranged through the first sliding hole (16). An adjusting screw rod (53) is arranged through the cross plate of the lifting frame (5) by means of a bearing. The lower end of the adjusting screw rod (53) is threadedly arranged through the chassis (1).
3. The conveying device for logistics loading and unloading according to claim 2, wherein A support plate (15) is arranged at the bottom of the chassis (1). A battery (12) is arranged on the support plate (15). A pressing plate (17) is arranged on the side of the battery (12). A threaded column (18) is arranged on the side of the pressing plate (17). The threaded column (18) is threadedly arranged through the chassis (1). A control box (13) is arranged on the chassis (1). The control box (13) is connected to the battery (12) and the motor. Wheel bodies (11) are arranged at the end corners below the chassis (1).
4. A conveying device for logistics loading and unloading according to claim 1, characterized in that, The support frame (3) includes two first side beams (31), two second side beams (33) and a plurality of supporting rollers (32). The two first side beams (31) are arranged in parallel. The two second side beams (33) are also arranged in parallel. A connecting mechanism (4) is arranged at the adjacent ends of the first side beam (31) and the second side beam (33). A plurality of supporting rollers (32) are arranged between the two side beams.
5. A conveying device for logistics loading and unloading according to claim 4, characterized in that, The connecting mechanism (4) includes a second connecting plate (42) and two first connecting plates (41). The two first connecting plates (41) are arranged in parallel, and threaded holes and a plurality of jacks (412) are arranged at the ends close to each other. The second connecting plate (42) is arranged on the side of the intersection of the two first connecting plates (41), and second bolts (421) are arranged through both ends and inserting rods (422) are fixedly arranged. The inserting rods (422) are inserted into the jacks (412), and the ends of the second bolts (421) are threadedly inserted into the threaded holes.
6. A conveying device for logistics loading and unloading according to claim 5, wherein, The first side beam (31) and the second side beam (33) are provided with snap grooves (34). The snap grooves (34) are arranged along the length direction of the side beam, and the ends are set to be open. A first snap plate (413) is connected and arranged on the side of the first connecting plate (41) through a first bolt (411), and the first snap plate (413) is arranged in the snap groove (34).
7. A conveying device for logistics loading and unloading according to claim 5, characterized in that, The second connecting plate (42) is set to be a T-shaped structure, and a sleeve (425) is connected and arranged through a bearing at the top of the second connecting plate (42). A central shaft (424) is arranged through the sleeve (425). A limiting roller (423) is arranged at the end of the central shaft (424), and the limiting roller (423) can be arranged at the edge of the annular belt (2).
8. A conveying device for logistics loading and unloading according to claim 1, characterized in that, Two of the support plates (6) are sleeved on the end shafts of the lifting frame (5), and a second snap plate (61) is connected and arranged on the side close to each other through a fourth bolt (65). The second snap plate (61) is installed in the snap groove (34) of the side beam.
9. A conveying device for logistics loading and unloading according to claim 8, characterized in that, An arc-shaped hole (62) and a plurality of limiting holes (63) are arranged on the support plate (6). The plurality of limiting holes (63) are arranged in a surrounding manner and are located on the side of the arc-shaped hole (62). A third bolt (64) is arranged through the arc-shaped hole (62). The end of the third bolt (64) is threadedly inserted into the lifting frame (5). An annular plate (7) is arranged on the side of the support plate (6). The annular plate (7) is sleeved on the short rod (52) of the lifting frame (5), and a limiting rod (71) is fixedly arranged on the side. The limiting rod (71) is inserted into one of the limiting holes (63).
Citation Information
Patent Citations
Logistics loading and unloading conveyor
CN118083618B