A construction engineering feeding device
Patent Information
- Application Number
- CN202410760727.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-13
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2044-06-13
AI Technical Summary
[0003]目前对于建筑工地用的混凝土在上料输送过程中会出现很多会暂停输送过程的问题,在停止输送阶段混凝土会停留于输送途中,若长时间停止不进行对混凝土的搅拌会导致混凝土产生凝固,影响上料进程,且会造成混凝土凝结于装置上对装置产生不利影响
1、通过设置内外两层的桨叶结构用于输送混凝土,并通过设置传动机构实现内外桨叶反向旋转,使内部桨叶带动混凝土向上上料,并通过出料口将混凝土输出,当需要暂停输送时,仅需将出料口封闭,通过外层桨叶进行转动即可将混凝土重新输送回料斗槽中,实现始终对混凝土进行搅拌并循环输送的目的。
Smart Images

Figure CN118361104B_ABST
Abstract
Description
Technical Field
[0001] This invention mainly relates to the field of building material feeding equipment, specifically a building engineering material feeding device. Background Technology
[0002] Ordinary concrete refers to artificial stone made by mixing cement as the main binder with water, sand, and gravel, and adding chemical admixtures and mineral admixtures when necessary, in appropriate proportions, and then uniformly mixing, compacting, molding, and curing. Concrete is mainly divided into two stages and states: the plastic state before setting and hardening, i.e., fresh concrete or concrete mixture, and the hard state after hardening, i.e., hardened concrete or concrete. The strength grade of concrete is classified according to the standard value of cubic compressive strength. In China, the strength grade of ordinary concrete is divided into 14 grades: C15, C20, C25, C30, C35, C40, C45, C50, C55, C60, C65, C70, C75, and C80.
[0003] Currently, there are many issues with the suspension of concrete delivery during the construction site's concrete feeding process. During the suspension phase, the concrete remains in the delivery route. If the concrete is not mixed for a long time, it will solidify, affecting the feeding process and causing the concrete to solidify on the equipment, which will have an adverse effect on the equipment. Summary of the Invention
[0004] To address the shortcomings of existing technologies, this invention provides a concrete feeding device for construction projects. Its main advantage lies in its dual-layer paddle structure for conveying concrete. A transmission mechanism enables the inner and outer paddles to rotate in opposite directions, allowing the inner paddle to carry the concrete upwards and output it through a discharge port. When conveying needs to be paused, simply closing the discharge port allows the outer paddle to rotate and return the concrete to the hopper. This achieves continuous mixing and cyclical conveying of the concrete. Furthermore, placing the paddles within the hopper allows them to agitate and mix the concrete during rotation. By altering the transmission method, the inner and outer paddles rotate in the same direction, enabling simultaneous conveying of large quantities of concrete.
[0005] To achieve the above objectives, the present invention employs the following technical solution: A material feeding device for construction engineering includes a feeding pipe, one end of which is provided with a feeding pipe cover. A bearing retaining ring is fixedly disposed at the center of the feeding pipe cover. A bearing is fixedly disposed inside the bearing retaining ring. A blade tube is disposed inside the bearing. A blade rod is rotatably connected to the blade tube. A blade is fixedly disposed on the outer periphery of the blade tube. A blade is fixedly disposed on the outer periphery of the blade rod. A discharge port is opened on the upper outer periphery of the blade tube. A feed port is opened on the lower outer periphery of the blade tube. A bearing retaining ring is fixedly disposed inside the lower end of the blade tube. A bearing is fixedly disposed inside the bearing retaining ring. The bearing is sleeved on the outer periphery of the blade rod and fixedly connected to it. A retaining ring is fixedly disposed on the lower outer periphery of the blade rod.
[0006] Furthermore, the bottom of the feeding pipe is provided with a hopper trough, and a bearing three is fixedly connected to the lower part of the hopper trough. The bearing three is fixedly connected to the outer periphery of the paddle tube. An opening and closing port is opened on the lower side of the upper part of the feeding pipe. A baffle support is fixedly provided on the outer side of the opening and closing port. A baffle is provided inside the baffle support. A handle is fixedly provided on one side of the lower part of the baffle.
[0007] Furthermore, a fixing ring is provided inside the lower end of the blade tube, and a plurality of fixing rods are provided on the rear surface of the fixing ring. A stop block is fixedly provided at the end of the fixing rod, and a spring is sleeved on the fixing rod. A sliding ring is sleeved on each fixing rod and slidably connected thereto. A sliding groove is provided in the middle of the sliding ring, and a plurality of slot rods are fixedly provided on the inner side of the sliding ring. A slot ring is fixedly provided on the outer periphery of the lower end of the blade rod, and a plurality of slots are provided on the outer periphery of the front part of the slot ring.
[0008] Furthermore, a toothed groove is fixedly provided on the outer periphery of the lower end of the blade rod, and a toothed groove is fixedly provided on the inner periphery of the lower end of the blade tube.
[0009] Furthermore, a fixed rod platform is fixedly provided at the rear of the hopper trough, a fixed sliding groove is provided on the upper part of the fixed rod platform, a sliding platform is provided on the upper part of the fixed rod platform and slidably connected thereto, a fixed sliding strip is fixedly provided at the bottom of the sliding platform and cooperates with the fixed sliding groove, a hydraulic rod support block is fixedly provided on the rear side of the upper part of the fixed rod platform, an electric push rod is fixedly provided on the front part of the hydraulic rod support block, and the telescopic end of the electric push rod is fixedly connected to the rear of the sliding platform.
[0010] Furthermore, a motor is fixedly mounted on the upper part of the sliding platform, a gear is fixedly mounted on the output end of the motor, a rotating platform is fixedly mounted on the front center of the gear, a connecting seat is fixedly mounted on the front center of the rotating platform, a rotating support rod is mounted on the connecting seat and rotatably connected thereto, a ball bearing seat is fixedly mounted on the end of the rotating support rod, and a ball bearing is mounted inside the ball bearing seat and rotatably connected thereto, the ball bearing being able to slide and engage with the sliding groove.
[0011] Furthermore, fulcrum rods are fixedly provided on both sides of the hopper trough, and fulcrum rings are provided at the ends of the fulcrum rods on both sides for rotatable connection. Support rods are fixedly provided on both sides of the lower part of the fulcrum rings, and a base plate is provided at the bottom of each support rod. A hydraulic cylinder base is fixedly provided on the upper front surface of the base plate, and a hydraulic cylinder is fixedly provided on the hydraulic cylinder base. A hydraulic cylinder upper seat is provided at the output end of the hydraulic cylinder for rotatable connection, and the hydraulic cylinder upper seat is fixedly connected to the lower part of the feeding pipe.
[0012] Furthermore, the lower part of the base plate is provided with several casters.
[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. The concrete is transported by setting up an inner and outer blade structure, and the inner and outer blades rotate in opposite directions by setting up a transmission mechanism. The inner blades drive the concrete upward and output it through the discharge port. When it is necessary to stop the transport, simply close the discharge port and rotate the outer blades to transport the concrete back to the hopper. This achieves the purpose of constantly mixing and circulating the concrete.
[0014] 2. Extend the blades and place them in the hopper trough so that the concrete in the trough can be stirred and mixed during the rotation of the blades, preventing the concrete from accumulating and solidifying in the hopper trough for a long time.
[0015] 3. By changing the transmission method, the inner and outer blades can rotate in the same direction, enabling simultaneous conveying of both inner and outer layers, and achieving rapid conveying of large quantities of concrete.
[0016] 4. By setting a variable transmission mechanism, only one rotating motor can be used to drive the inner and outer blades to rotate in opposite directions or in the same direction, which improves the operating efficiency of the device, reduces the power supply required by the device, and expands the applicability of the device. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a cross-sectional structural diagram of the present invention; Figure 4 This is a cross-sectional structural diagram of the present invention; Figure 5 This is a schematic diagram of the structure of the present invention; Figure 6 This is a schematic diagram of the structure of the present invention; Figure 7 This is a schematic diagram of the blade tube structure of the present invention; Figure 8 This is a schematic diagram of the sliding ring structure of the present invention.
[0018] The following are the labels in the attached diagram: 1. Feed pipe; 2. Feed pipe cover; 3. Bearing retaining ring one; 4. Bearing one; 5. Paddle tube; 6. Paddle rod; 7. Paddle one; 8. Paddle two; 9. Discharge port; 10. Feed port; 11. Bearing retaining ring two; 12. Bearing two; 13. Retaining ring; 14. Hopper trough; 15. Bearing three; 16. Opening / closing port; 17. Baffle support; 18. Baffle; 19. Handle; 20. Retaining ring; 21. Retaining rod; 22. Stop block; 23. Spring; 24. Sliding ring; 25. Slide groove; 26. Slot rod 27. Slot ring; 28. Slot; 29. Gear groove one; 30. Gear groove two; 31. Fixed rod platform; 32. Fixed slide groove; 33. Sliding table; 34. Fixed slide bar; 35. Hydraulic rod support block; 36. Electric actuator; 37. Motor; 38. Gear; 39. Rotating table; 40. Connecting seat; 41. Rotating support rod; 42. Ball bearing seat; 43. Ball bearing; 44. Pivot rod; 45. Pivot ring; 46. Support rod; 47. Base plate; 48. Hydraulic cylinder base; 49. Hydraulic cylinder; 50. Hydraulic cylinder upper seat; 51. Caster wheel. Detailed Implementation
[0019] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined in this application.
[0020] Example: A material feeding device for construction projects like Figure 1-8 As shown, a construction engineering material feeding device has the following specific structure: A material feeding device for construction engineering includes a feeding pipe 1, with a feeding pipe cover 2 at one end. A bearing retaining ring 3 is fixedly installed at the center of the feeding pipe cover 2. A bearing 4 is fixedly installed inside the bearing retaining ring 3. A paddle tube 5 is installed inside the bearing 4. The paddle tube 5 can rotate relative to the feeding pipe 1 by rotating the bearing 4. A paddle rod 6 is rotatably connected to the paddle tube 5. A paddle blade 7 is fixedly installed on the outer periphery of the paddle tube 5. A second paddle blade 8 is fixedly installed on the outer periphery of the paddle rod 6. A discharge port 9 is opened on the upper outer periphery of the paddle tube 5, and a feed inlet 10 is opened on the lower outer periphery of the paddle tube 5. A bearing retaining ring 11 is fixedly connected to the lower end of the paddle tube 5. A second bearing 12 is fixedly installed inside the bearing retaining ring 11. The bearing 12 is sleeved on the paddle tube 1. The blade rod 6 is fixedly connected to the outer periphery of the blade tube 5 by means of the bearing 12. The blade rod 6 can rotate relative to the blade tube 5. A retaining ring 13 is fixedly provided on the lower outer periphery of the blade rod 6. The retaining ring 13 is used to fix the relative position of the blade rod 6 and the blade tube 5. By driving the blade rod 6 to rotate, the concrete entering through the feed port 10 on the outer blade tube 5 can be transported upward into the blade tube 5 through the rotation of the blade 8. Finally, it leaves the blade tube 5 through the discharge port 9 and enters the feed pipe 1. It can be output to the required feed position through the opening and closing port 16. If the opening and closing port 16 is closed, the concrete is transmitted through the blade 7 on the outer periphery of the blade tube 5 and flows back to the bottom through the feed pipe 1 for circulation.
[0021] The bottom of the feeding pipe 1 is provided with a hopper trough 14 for loading concrete for feeding. A bearing 3 15 is fixedly connected to the lower part of the hopper trough 14. The bearing 3 15 is fixedly connected to the outer periphery of the blade pipe 5. By setting the bearing 3 15, the bearing can rotate, so that the blade pipe can be rotatably connected to the hopper trough 14. The upper lower side of the feeding pipe 1 is provided with an opening and closing port 16 for outputting concrete from the opening and closing port 16, and can be closed to stop the output. A baffle support 17 is fixedly provided on the outside of the opening and closing port 16. A baffle 18 is provided inside the baffle support 17. A handle 19 is fixedly provided on one side of the lower part of the baffle 18. The baffle 18 can be moved by the handle to open and close the opening and closing port.
[0022] The lower end of the blade tube 5 is provided with a fixing ring 20. The rear surface of the fixing ring 20 is provided with several fixing rods 21. The end of the fixing rod 21 is fixed with a stop block 22. A spring 23 is sleeved on the fixing rod 21. Each fixing rod 21 is sleeved with a sliding ring 24 and slidably connected to it. The middle of the sliding ring 24 is provided with a sliding groove 25. Several slot rods 26 are fixed on the inner side of the sliding ring 24. The lower end of the blade rod 6 is fixed with a slot ring 27. The front outer periphery of the slot ring 27 is provided with several slots 28. The spring 23 can push the sliding ring 24 so that the slot rods 26 on it can be inserted into the slots 28 so that the blade tube 5 and the blade rod 6 can rotate synchronously.
[0023] The lower end of the blade rod 6 is fixedly provided with a toothed groove 29 on its outer periphery, and the lower end of the blade tube 5 is fixedly provided with a toothed groove 30 on its inner periphery.
[0024] A fixed rod platform 31 is fixedly provided at the rear of the hopper trough 14. A fixed sliding groove 32 is provided on the upper part of the fixed rod platform 31. A sliding platform 33 is provided on the upper part of the fixed rod platform 31 and is slidably connected to it. A fixed sliding strip 34 that cooperates with the fixed sliding groove 32 is fixedly provided at the bottom of the sliding platform 33. A hydraulic rod support block 35 is fixedly provided on the upper rear side of the fixed rod platform 31. An electric push rod 36 is fixedly provided at the front of the hydraulic rod support block 35. The telescopic end of the electric push rod 36 is fixedly connected to the rear of the sliding platform 33. By setting the sliding platform 33, the motor 37 can slide back and forth on the fixed rod platform 31. The back and forth sliding position of the motor 37 can be controlled by the electric push rod.
[0025] A motor 37 is fixedly mounted on the upper part of the sliding table 33. A gear 38 is fixedly mounted on the output end of the motor 37. The gear meshes with the first gear groove 29 and the second gear groove 30 to allow the blade tube 5 and blade rod 6 to rotate. A rotating platform 39 is fixedly mounted at the front center of the gear 38. A connecting seat 40 is fixedly mounted at the front center of the rotating platform 39. A rotating support rod 41 is rotatably connected to the connecting seat 40. A ball bearing seat 42 is fixedly mounted at the end of the rotating support rod 41. A ball bearing 43 is rotatably connected to the ball bearing seat 42. The ball bearing 43 can slide in the sliding groove 25. The forward movement of the motor 37 drives the rotating support rod 41 to move, causing the ball bearing at the end of the rotating support rod 41 to engage with the sliding ring 2. The sliding groove 25 on the 4-axis engages with and moves the sliding ring 24, causing the slot rod 26 on the sliding ring 24 to disengage from the slot 28. This allows the blade tube 5 and the blade rod 6 to separate and rotate. Furthermore, the motor 37 drives the gear 38 to rotate and mesh with the first tooth groove 29 and the second tooth groove 30, causing the blade tube 5 and the blade rod 6 to rotate in opposite directions. When the motor 37 moves outward, the slot rod 26 on the sliding ring 24 inserts into the slot 28, fixing the blade tube 5 and the blade rod 6 so that they can rotate simultaneously. The motor 37 drives the gear 38 to rotate and mesh with the second tooth groove 30, thereby causing the blade tube 5 and the blade rod 6 to rotate synchronously.
[0026] The hopper trough 14 is fixedly provided with fulcrum rods 44 on both sides. The ends of the fulcrum rods 44 are provided with fulcrum rings 45 and rotatably connected to them. Support rods 46 are fixedly provided on both sides of the lower part of the fulcrum rings 45. Each support rod 46 is provided with a base plate 47 at its bottom. A hydraulic cylinder base 48 is fixedly provided on the upper front surface of the base plate 47. A hydraulic cylinder 49 is fixedly provided on the hydraulic cylinder base 48. A hydraulic cylinder upper seat 50 is provided at the output end of the hydraulic cylinder 49 and rotatably connected to it. The hydraulic cylinder upper seat 50 is fixedly connected to the lower part of the feeding pipe 1. Through the extension and contraction of the hydraulic cylinder 49, in conjunction with the support rods 46, fulcrum rings 45, etc., the device can freely change its angle, thereby changing the feeding height of the device. Several universal wheels 51 are provided on the lower part of the base plate 47, so that the device can be moved flexibly for position adjustment.
[0027] Working principle: In use, this device uses the electric actuator 36 to push the sliding table 33 upward on the fixed rod platform 31, thereby pushing the motor 37 to move. This causes the gear 38 connected to the output end of the motor 37 to be pushed to a position where it meshes with both the second gear slot 30 and the first gear slot 29. Simultaneously, the rotating support rod 41 on the gear and the ball bearing 43 at its end push the sliding ring 24 inside the blade tube 5 to move, causing the slot rod 26 on it to separate from the slot 28 on the blade rod 6. This allows the blade tube 5 to be separated from the blade rod 6 and rotate. Further, the electric actuator... The rotation of machine 37 drives the gear 38 to rotate, and the gear 38 simultaneously meshes with tooth groove 29 and tooth groove 30, causing the blade tube 5 and the blade rod 6 to rotate in opposite directions. The required amount of concrete is added to the hopper trough 14, and the rotation of the blade rod 6 drives the blade 8 to allow the concrete to enter the blade tube 5 through the inlet 10 and be conveyed upwards along the blade tube 5. Further, it is conveyed to the feed pipe 1 through the outlet 9. The concrete can be output to a designated position by opening the baffle 18. When it is necessary to pause the output, simply close the baffle 18, and the concrete can then pass through the feed pipe. 1. The impeller 7, located on the outer periphery of the impeller tube 5, rotates and transports the concrete to the bottom, and then back to the hopper trough 14 through the bottom of the feed pipe 1 for continuous circulation. This ensures that the concrete is constantly being mixed and transported, preventing it from solidifying on the device surface due to a pause in operation. Further, the gear 38 is moved outwards so that it meshes only with the tooth groove 30. The spring 23 pushes the sliding ring 24, causing the slot rod 26 on it to re-insert into the slot 28. This fixes the impeller tube 5 and the impeller rod 6 together and allows them to rotate synchronously. The motor 37 drives the gear 38 to rotate, thus... The gear 38 meshes with the second tooth groove 30, allowing the blade tube 5 and the blade rod 6 to rotate synchronously. This enables the concrete to be conveyed upwards through the feed pipe 1, thereby accelerating the concrete conveying process. When it is necessary for the blade tube 5 and the blade rod 6 to rotate in the opposite direction, since the relative positions of the first tooth groove 29 and the second tooth groove 30 are fixed, the motor 37 can be directly pushed inwards. This causes the gear 38 to mesh with both the first tooth groove 29 and the second tooth groove 30, resulting in the blade tube 5 and the blade rod 6 rotating in the opposite direction. This prevents the gear 38 from colliding with the corresponding tooth groove and causing damage.
[0028] In explaining this invention, it should be noted that the terms indicating location are used only for ease of description and understanding, and are not intended to limit the installation location of specific technical features. Other possible installation methods are not excluded.
[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A material feeding device for construction engineering, comprising a feeding pipe (1), characterized in that: The feeding pipe (1) is provided with a feeding pipe cover (2) at one end. A bearing fixing ring (3) is fixedly provided in the center of the feeding pipe cover (2). A bearing (4) is fixedly provided inside the bearing fixing ring (3). A blade tube (5) is provided inside the bearing (4). A blade rod (6) is provided inside the blade tube (5) and rotatably connected to it. A blade (7) is fixedly provided on the outer periphery of the blade tube (5). A blade (8) is fixedly provided on the outer periphery of the blade rod (6). A discharge port (9) is opened on the upper outer periphery of the blade tube (5). A feed port (10) is opened on the lower outer periphery of the blade tube (5). A bearing fixing ring (11) is provided inside the lower end of the blade tube (5) and fixedly connected to it. A bearing 2 (12) is fixedly installed inside the fixed ring 2 (11). The bearing 2 (12) is sleeved on the outer periphery of the blade rod (6) and fixedly connected to it. A retaining ring (13) is fixedly installed on the lower outer periphery of the blade rod (6). A fixed ring (20) is installed inside the lower end of the blade tube (5). Several fixed rods (21) are provided on the rear surface of the fixed ring (20). A stop block (22) is fixedly installed at the end of the fixed rod (21). A spring (23) is sleeved on the fixed rod (21). A sliding ring (24) is sleeved on each of the fixed rods (21) and slidably connected to it. A sliding groove (25) is provided in the middle of the sliding ring (24). Several slot rods (25) are fixedly installed on the inner side of the sliding ring (24). 6) A slot ring (27) is fixedly provided on the outer periphery of the lower end of the blade rod (6). Several slots (28) are provided on the outer periphery of the front part of the slot ring (27). A hopper groove (14) is provided at the bottom of the feeding pipe (1). A fixed rod platform (31) is fixedly provided at the rear part of the hopper groove (14). A fixed sliding groove (32) is provided on the upper part of the fixed rod platform (31). A sliding table (33) is provided on the upper part of the fixed rod platform (31) and is slidably connected to it. A fixed sliding strip (34) that cooperates with the fixed sliding groove (32) is fixedly provided at the bottom of the sliding table (33). A hydraulic rod support block (35) is fixedly provided on the rear side of the upper part of the fixed rod platform (31). An electric actuator is fixedly provided on the front part of the hydraulic rod support block (35). The electric actuator (36) has its telescopic end fixedly connected to the rear of the sliding table (33). The upper part of the sliding table (33) is fixedly provided with a motor (37). The output end of the motor (37) is fixedly provided with a gear (38). The front center of the gear (38) is fixedly provided with a rotating table (39). The front center of the rotating table (39) is fixedly provided with a connecting seat (40). The connecting seat (40) is fitted with a rotating support rod (41) and rotates therewith. The end of the rotating support rod (41) is fixedly provided with a ball seat (42). The ball seat (42) is provided with a ball (43) inside and rotates therewith. The ball (43) can slide and engage with the slide groove (25).
2. The construction material feeding device according to claim 1, characterized in that: The lower part of the hopper trough (14) is fixedly provided with a bearing three (15) and fixedly connected to it. The bearing three (15) is fixedly connected to the outer periphery of the blade tube (5). The upper lower side of the feed pipe (1) is provided with an opening and closing port (16). A baffle support (17) is fixedly provided on the outside of the opening and closing port (16). A baffle (18) is provided inside the baffle support (17). A handle (19) is fixedly provided on one side of the lower part of the baffle (18).
3. The construction material feeding device according to claim 2, characterized in that: The lower end of the blade rod (6) is fixedly provided with a toothed groove one (29) on the outer periphery, and the lower end of the blade tube (5) is fixedly provided with a toothed groove two (30) on the inner periphery.
4. A construction material feeding device according to claim 2, characterized in that: The hopper trough (14) is fixedly provided with fulcrum rods (44) on both sides. The ends of the fulcrum rods (44) on both sides are provided with fulcrum rings (45) and rotatably connected to them. The lower sides of the fulcrum rings (45) are fixedly provided with support rods (46). The bottom of each support rod (46) is provided with a base plate (47). The upper front surface of the base plate (47) is fixedly provided with a hydraulic cylinder base (48). The hydraulic cylinder base (48) is fixedly provided with a hydraulic cylinder (49). The output end of the hydraulic cylinder (49) is provided with a hydraulic cylinder upper seat (50) and rotatably connected to it. The hydraulic cylinder upper seat (50) is fixedly connected to the lower part of the feeding pipe (1).
5. A construction material feeding device according to claim 4, characterized in that: The bottom plate (47) is provided with several casters (51).
Citation Information
Patent Citations
Concrete water reducer mixing device
CN220030693U
Feeding device for concrete mixing
CN220784429U