Movable high slope continuous drilling device
By designing a movable high-slope continuous drilling device, using winches, submerged hole drills, casings and fixed pins, the problems of unstable fixation of construction platforms on high-slopes and inability to reduce dust during drilling, achieving stable and safe continuous drilling and environmental protection.
Patent Information
- Application Number
- CN202421149565.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-24
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-05-24
AI Technical Summary
In the prior art, the construction platform can only be fixed by wire rope on high slopes, resulting in the device shaking during operation and unstable fixation. There is a risk of landslide when the wire rope breaks, and it is impossible to achieve dust reduction during drilling, resulting in environmental pollution.
A movable high-slope continuous drilling device is designed, and a borehole operation platform that can move on the slope is used to fix the main body of the device by fixing the pin to prevent landslides, and a spray head is used to spray water and dust reduction during the drilling process.
Stable and safe continuous drilling construction on high slopes is achieved, landslide risks caused by wire rope breakage, and the environment is protected through dust reduction measures.
Smart Images

Figure CN222649934U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of a movable high-slope continuous drilling device, in particular to a movable high-slope continuous drilling device. Background Art
[0002] When planting grass and other operations on the slopes of roads, railways, and tunnel entrances and exits, it is necessary to drill holes on the slope surface. At present, the common method for drilling holes is to set up scaffolding on site to place drilling equipment for hole construction. In traditional construction, for the safety and continuity of construction, the scaffolding must be fully covered on the slope surface and buckled on the slope surface. The connecting fasteners are firm and regularly inspected by special personnel. No shaking is allowed. In addition, in order to meet the construction accuracy requirements, it is often necessary to repeatedly adjust the drilling equipment, which greatly increases the construction personnel and time costs. This traditional construction method not only has the problems of low construction efficiency and high labor costs, but also has problems such as inaccurate drilling and the need to transport back and forth for alignment.
[0003] After searching, it was found that a movable construction platform for high and steep slopes was disclosed in the Chinese patent with authorization announcement 202223408715.X, which includes a trolley arranged on the slope, a frame is hingedly mounted on the trolley, and the frame is supported by a retractable and adjustable support device, and construction equipment is installed on the frame; a traction winch is installed on the trolley, wheels are installed at the bottom of the trolley, and the end of the wire rope on the traction winch is fixed to the anchor device on the top of the slope. The frame is provided with a guardrail. The construction equipment includes an anchor drilling machine.
[0004] However, the patents in the prior art have the following disadvantages:
[0005] This kind of movable construction platform for high and steep slopes can only be fixed on the slope by steel wire ropes. When the device shakes during operation, the whole device cannot be stably fixed by the steel wire ropes alone. At the same time, when the steel wire ropes break, the device is at risk of sliding down the slope, causing safety accidents. At the same time, dust reduction cannot be achieved during drilling, which will cause pollution to the surrounding environment. Utility Model Content
[0006] 1. Technical issues to be solved
[0007] In view of the deficiencies in the prior art, the utility model provides a movable high-slope continuous drilling device, which solves the problem that the entire platform can only be fixed on the slope by steel wire ropes. When the device shakes during operation, the entire device cannot be stably fixed by the steel wire ropes alone. At the same time, when the steel wire ropes break, the device is at risk of sliding to the bottom of the slope, causing a safety accident. At the same time, dust reduction cannot be achieved during drilling, which will cause pollution to the surrounding environment.
[0008] (II) Technical solution
[0009] To achieve the above purpose, the utility model is implemented through the following technical solutions: including a bottom beam, characterized in that: connecting seats are fixed at both ends of the bottom beam by bolts, the bottom beam is provided with multiple groups, the connecting seats are connected to the wheel assembly, an L-shaped bracket is fixed to the upper end of the bottom beam by bolts, the L-shaped bracket is fixed to the fourth bracket by a fastener, the fourth bracket is fixed to one end of the third bracket by a fastener, a support column is fixed to the upper end of the bottom beam by bolts, the support column is fixed to multiple first brackets by fasteners, a guide rail is fixed to the upper end of the third bracket by a fastener, a sliding seat is slidably provided on the upper end of the guide rail, and a hydraulic telescopic device is fixed to one end of the inner part of the guide rail by bolts, A first fixing plate is fixed to one end of the hydraulic telescopic device by bolts, a guide rod is fixed to the fixing plate by bolts, a slide is fixed to the other end of the guide rod by bolts, a down-the-hole drill is fixed to the upper end of the slide by bolts, a drill bit is connected to one end of the down-the-hole drill by casing, an auxiliary frame is fixed to one end of the slide by bolts, the casing passes through the auxiliary frame, a plurality of winches are fixed to the upper end of the bottom beam by bolts, the winches are connected to a fixing column by a steel wire rope, the fixing column is installed and fixed to the top of the hillside, a controller is fixed to the upper end of the bottom beam by bolts, the controller is electrically connected to other electrical devices, and a display operator is fixed to one side of the support column by bolts.
[0010] As a preferred embodiment of the utility model, the first bracket is fixed to the second bracket via a fastener, and the other end of the second bracket is fixed to the guide rail via a fastener.
[0011] As a preferred embodiment of the utility model, a first fixing pin is fixed to one side of the bottom beam by bolts, and a second fixing pin is fixed to one side of the support column by bolts.
[0012] As a preferred embodiment of the utility model, a support column is fixed to the upper end of the bottom beam through a first reinforcing rib, and a second fixing pin is fixed to the support column through a second reinforcing rib.
[0013] As a preferred embodiment of the utility model, a water tank is fixed between the bottom beams by bolts, and a booster pump is fixed to one side of the water tank by bolts.
[0014] As a preferred embodiment of the present invention, a water filling port is provided at the upper end of the water tank.
[0015] As a preferred embodiment of the utility model, a nozzle is fixed to the upper end of the slide seat by bolts, and the nozzle is connected to the booster pump by a hose.
[0016] As a preferred embodiment of the utility model, a lighting lamp is fixed to one side of the auxiliary frame by bolts, and a limiting frame is fixed to the bottom end of the guide rail by bolts.
[0017] (III) Beneficial effects
[0018] The utility model provides a movable high slope continuous drilling device, which has the following
[0019] Beneficial effects:
[0020] 1. The utility model is a movable high-slope continuous drilling device, which is assembled into a drilling operation platform that can move on the slope through a winch, a down-the-hole drill, a casing and other components. The operating platform can move on the slope by lifting the winch, thereby realizing continuous drilling construction, accelerating construction efficiency, shortening construction period and saving investment costs.
[0021] 2. The utility model provides a movable high-slope continuous drilling device by setting a fixing pin. After the position of the device body is determined on the slope, the fixing pin is inserted into the slope mountain to fix the device body, thereby preventing the wire rope from breaking during the construction process and causing the device body to slide. By setting a nozzle, the dust generated during the drilling process is reduced by spraying water from the nozzle, thereby achieving the purpose of protecting the environment.
[0022] 3. The utility model provides a movable high-slope continuous drilling device. By setting casing, the casing is continuously added according to the drilling depth, thereby improving the hole-making rate of the drilling rig under complex geological conditions. When drilling, the casing is continuously pushed forward to form protection in the hole to avoid hole collapse. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:
[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0025] Figure 2 This is a schematic diagram of the main local structure of the utility model;
[0026] Figure 3 It is a schematic diagram of the partial structure of the utility model;
[0027] In the figure: 1. wheel assembly; 2. L-shaped bracket; 3. first fixing pin; 4. bottom beam; 5. winch; 6. first reinforcing rib; 7. controller; 8. connecting seat; 9. second fixing pin; 10. second reinforcing rib; 11. display operator; 12. support column; 13. first bracket; 14. second bracket; 15. third bracket; 16. first fixing plate; 17. water tank; 18. hydraulic telescopic device; 19. water inlet; 20. guide rod; 21. slide seat; 22. down-the-hole drill; 23. nozzle; 24. auxiliary frame; 25. lighting lamp; 26. fixing column; 27. wire rope; 28. guide rail; 29. limit frame; 30. casing; 31. fourth bracket; 32. booster pump. DETAILED DESCRIPTION
[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0029] See also Figures 1 to 3 The utility model provides a technical solution: a movable high-slope continuous drilling device, including a bottom beam 4, two ends of the bottom beam 4 are fixed with connecting seats 8 by bolts, the bottom beam 4 is provided with multiple groups, the connecting seats 8 are connected to the wheel assembly 1, the upper end of the bottom beam 4 is fixed with an L-shaped bracket 2 by bolts, the L-shaped bracket 2 is fixed with a fourth bracket 31 by a fastener, the fourth bracket 31 is fixed with one end of the third bracket 15 by a fastener, the upper end of the bottom beam 4 is fixed with a support column 12 by bolts, the support column 12 is fixed with multiple first brackets 13 by fasteners, the upper end of the third bracket 15 is fixed with a guide rail 28 by a fastener, the upper end of the guide rail 28 is slidably provided with a slide seat 21, one end of the guide rail 28 is fixed with a hydraulic telescopic device 18 by bolts, and the hydraulic telescopic device 18 is fixed to the inner end of the guide rail 28. A first fixing plate 16 is fixed to one end of the device 18 by bolts, a guide rod 20 is fixed to the fixing plate 16 by bolts, a slide 21 is fixed to the other end of the guide rod 20 by bolts, a down-the-hole drill 22 is fixed to the upper end of the slide 21 by bolts, a drill bit is connected to one end of the down-the-hole drill 22 by a casing 30, an auxiliary frame 24 is fixed to one end of the slide 21 by bolts, the casing 30 passes through the auxiliary frame 24, a plurality of winches 5 are fixed to the upper end of the bottom beam 4 by bolts, the winches 5 are connected to the fixing column 26 by a wire rope 27, the fixing column 26 is installed and fixed on the top of the hillside, a controller 7 is fixed to the upper end of the bottom beam 4 by bolts, the controller 7 is electrically connected to other electrical devices, and a display operator 11 is fixed to one side of the support column 12 by bolts.
[0030] In a specific embodiment of the present utility model, connecting seats 8 are fixed at both ends of the bottom beam 4, which are connected to the wheel assembly 1 through the connecting seats 8 to realize the convenience of overall movement of the device, and can be moved to different positions according to needs. An L-shaped bracket 2 is fixed to the upper end of the bottom beam 4 for installing the fourth bracket 31. The L-shaped bracket 2 is fixed to the fourth bracket 31 through a fastener. The fasteners used are common fasteners on the market to achieve the fixation between components. The fourth bracket 31 is provided for installing and fixing the third bracket 15. The fourth bracket 31 is fixed to one end of the third bracket 15 through a fastener. A support column 12 is fixed to the upper end of the bottom beam 4 for supporting the other end of the device. The support column 12 is fixed with a plurality of first brackets 13 by fasteners, and the first brackets 13 are used to fix and support the other end of the third bracket 15. By adjusting the position of the first bracket 13 on the support column 12, the angle between the guide rail 28 and the high slope can be adjusted according to the needs, so that the device can still be used when facing different slopes to ensure that the drilling platform of the device is in a horizontal state. The upper end of the third bracket 15 is fixed with a guide rail 28 by fasteners for realizing the movement of the slide 21. The upper end of the guide rail 28 is slidably provided with a slide 21 for installing and fixing the down-the-hole drill 22. A hydraulic telescopic device 18 is fixed at one end of the guide rail 28. The hydraulic telescopic device 18 A first fixed plate 16 is fixed at one end, a guide rod 20 is fixed to the fixed plate 16, and the other end of the guide rod 20 is fixed to the slide 21. The first fixed plate 16 is moved by the extension and retraction of the hydraulic extension device 18, and then the slide 21 is moved by the guide rod 20 to adjust the position of the down-the-hole drill 22 according to different needs. A down-the-hole drill 22 is fixed on the upper end of the slide 21 for drilling holes in the slope. A drill bit is connected to one end of the down-the-hole drill 22 through a casing 30, and drilling begins on the slope through the drill bit until the drilling is completed. The casing 30 has a plurality of casings that are continuously increased according to the drilling depth. When drilling, the casing 30 is continuously pushed into the hole to form a protective To avoid hole collapse and drill jamming, an auxiliary frame 24 is fixed at one end of the slide 21, and the casing 30 passes through the auxiliary frame 24 to prevent violent swinging during drilling and causing drilling failure. A plurality of winches 5 are fixed on the upper end of the bottom beam 4. The winch 5 is connected to a fixed column 26 through a wire rope 27. The fixed column 26 is installed and fixed on the top of the hillside. The winch 5 is hoisted up and down to the pre-drilling position of the slope. A controller 7 is fixed on the upper end of the bottom beam 4. The controller 7 is electrically connected to other electrical devices and controls them. A display operator 11 is fixed on one side of the support column 12 for displaying device data information to facilitate personnel to operate the device.
[0031] Specifically, the first bracket 13 is fixed to the second bracket 14 via a fastener, and the other end of the second bracket 14 is fixed to the guide rail 28 via a fastener.
[0032] In order to solve the problem that the device can drill holes in the ground on the horizontal ground, such as Figure 1As shown, the first bracket 13 is fixed to the second bracket 14 by fasteners, and the other end of the second bracket 14 is fixed to the guide rail 28 by fasteners. When used on a slope, the other end of the guide rail 28 is fixed to the third bracket 15 by fasteners. When drilling on the horizontal ground, the horizontal angle of the guide rail 28 can be adjusted through the other end of the second bracket 14, so that drilling in a direction vertical to the ground can be achieved.
[0033] Specifically, a first fixing pin 3 is fixed to one side of the bottom beam 4 by bolts, and a second fixing pin 9 is fixed to one side of the support column 12 by bolts.
[0034] In order to solve the problem of stable fixation of the device on the slope, such as Figure 1 As shown, a first fixing pin 3 is fixed on one side of the bottom beam 4, and a second fixing pin 9 is fixed on one side of the support column 12. After the position of the device is adjusted on the slope, the first fixing pin 3 and the second fixing pin 9 are inserted into the mountain to fix the entire device. At the same time, it can also prevent the device from sliding down the slope when the wire rope 27 breaks.
[0035] Specifically, a support column 12 is fixed to the upper end of the bottom beam 4 via a first reinforcing rib 6 , and a second fixing pin 9 is fixed to the support column 12 via a second reinforcing rib 10 .
[0036] In order to solve the problem of the support column and the second reinforcement rib being firmly fixed, Figure 1 As shown, a support column 12 is fixed to the upper end of the bottom beam 4 through a first reinforcing rib 6, and a second fixing pin 9 is fixed to the support column 12 through a second reinforcing rib 10, so that the support column 12 and the second fixing pin 9 are more stable and the overall strength of the device is increased.
[0037] Specifically, a water tank 17 is fixed between the bottom beams 4 by bolts, and a booster pump 32 is fixed to one side of the water tank 17 by bolts.
[0038] In order to solve the problem that water can be sprayed out with higher pressure, such as Figure 1 , 3 As shown, a water tank 17 is fixed between the bottom beams 4 for storing water, and a booster pump 32 is fixed on one side of the water tank 17 for ensuring that water has a certain pressure when sprayed out.
[0039] Specifically, a water inlet 19 is provided at the upper end of the water tank 17 .
[0040] In order to solve the problem that water can be injected into the water tank, such as Figure 1 As shown, a water inlet 19 is provided at the upper end of the water tank 17 for injecting water into the water tank 17 .
[0041] Specifically, a nozzle 23 is fixed to the upper end of the slide seat 21 by bolts, and the nozzle 23 is connected to the booster pump 32 through a hose.
[0042] In order to solve the problem of reducing dust and protecting the environment during drilling, such as Figure 1 As shown, a nozzle 23 is fixed to the upper end of the slide 21 by bolts, and the nozzle 23 is connected to the booster pump 32 through a hose. Water is sprayed through the nozzle 23 to reduce dust generated during the drilling process and reduce pollution to the environment.
[0043] Specifically, a lighting lamp 25 is fixed to one side of the auxiliary frame 24 by bolts, and a limiting frame 29 is fixed to the bottom end of the guide rail 28 by bolts.
[0044] In order to solve the problem of lighting and temporary storage of casing when the light is insufficient, such as Figure 1 As shown, a lighting lamp 25 is fixed to one side of the auxiliary frame 24 for lighting when light is insufficient, and a limiting frame 29 is fixed to the bottom end of the guide rail 28 for temporarily storing the sleeve 30 to facilitate workers to take the sleeve 30.
[0045] The specific implementation methods disclosed in the present invention omit detailed descriptions of known functions and known components. To ensure the compatibility of the equipment, the operating methods adopted are consistent with the parameters of commercially available equipment.
[0046] In summary, the working principle and use process of the utility model are as follows: connecting seats 8 are fixed at both ends of the bottom beam 4, which are connected to the wheel assembly 1 through the connecting seats 8 to realize the convenient movement of the entire device, and can be moved to different positions according to needs. An L-shaped bracket 2 is fixed to the upper end of the bottom beam 4 for installing the fourth bracket 31. The L-shaped bracket 2 is fixed to the fourth bracket 31 through a fastener. The fasteners used are common fasteners on the market to achieve the fixation between components. The fourth bracket 31 is provided for installing and fixing the third bracket 15. The fourth bracket 31 is fixed to one end of the third bracket 15 through the fastener. A support column 12 is fixed to the upper end of the bottom beam 4 for supporting the other end of the device. The support column 12 is fixed to multiple first brackets 13 through fasteners. Through the first bracket 1 3 is used to fix and support the other end of the third bracket 15. By adjusting the position of the first bracket 13 on the support column 12, the angle between the guide rail 28 and the high slope can be adjusted according to the needs, so that the device can still be used when facing different slopes to ensure that the drilling platform of the device is in a horizontal state. The upper end of the third bracket 15 is fixed with a guide rail 28 through a fastener to realize the movement of the slide 21. The upper end of the guide rail 28 is slidably provided with a slide 21 for installing and fixing the down-the-hole drill 22. A hydraulic telescopic device 18 is fixed at one end of the guide rail 28. A first fixed plate 16 is fixed at one end of the hydraulic telescopic device 18. The fixed plate 16 is fixed with a guide rod 20. The other end of the guide rod 20 is fixed on the slide 21. Through the telescopic movement of the hydraulic telescopic device 18 The first fixed plate 16 is driven to move, and then the slide 21 is driven to move through the guide rod 20, so as to adjust the position of the down-the-hole drill 22 according to different needs. A down-the-hole drill 22 is fixed on the upper end of the slide 21 for drilling holes in the slope. A drill bit is connected to one end of the down-the-hole drill 22 through a casing 30, and drilling into the slope is started through the drill bit until the drilling is completed. There are multiple casings 30 that are continuously increased according to the drilling depth. When drilling, the casing 30 is continuously pushed into the hole to form a protection to avoid hole collapse and drill jamming. An auxiliary frame 24 is fixed at one end of the slide 21, and the casing 30 passes through the auxiliary frame 24 to prevent violent swinging during the drilling process, resulting in drilling failure. Multiple winches 5 are fixed on the upper end of the bottom beam 4, and the winches 5 are connected to the bottom beam 4 through a wire rope 27. A fixed column 26 is connected, and the fixed column 26 is installed and fixed on the top of the hillside. The side device is hoisted up and down by the winch 5 to the pre-drilling position of the slope. A controller 7 is fixed on the upper end of the bottom beam 4. The controller 7 is electrically connected to other electrical devices and controls them. A display operator 11 is fixed on one side of the support column 12 for displaying device data information to facilitate personnel to operate the device. The first bracket 13 is fixed with the second bracket 14 through a fastener, and the other end of the second bracket 14 is fixed with a guide rail 28 through a fastener. When the slope is used, the other end of the guide rail 28 is fixed to the third bracket 15 through a fastener. When drilling holes in the horizontal ground, the horizontal angle of the guide rail 28 can be adjusted through the other end of the second bracket 14, so that drilling can be achieved in the direction vertical to the ground.A first fixing pin 3 is fixed on one side of the bottom beam 4, and a second fixing pin 9 is fixed on one side of the support column 12. After the device position is adjusted on the slope, the first fixing pin 3 and the second fixing pin 9 are inserted into the mountain to fix the device as a whole. At the same time, it can also prevent the device from sliding down the slope when the wire rope 27 breaks. A nozzle 23 is fixed on the upper end of the slide 21 by bolts. The nozzle 23 is connected to the booster pump 32 through a hose. Water is sprayed through the nozzle 23 to reduce dust generated during drilling and reduce pollution to the environment.
[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A movable high-slope continuous drilling device, comprising a bottom beam (4), characterized in that: The bottom beam (4) has connecting seats (8) fixed at both ends by bolts, the bottom beam (4) is provided with a plurality of groups, the connecting seats (8) are connected to the wheel assembly (1), the upper end of the bottom beam (4) is fixed with an L-shaped bracket (2) by bolts, the L-shaped bracket (2) is fixed with a fourth bracket (31) by a fastener, the fourth bracket (31) is fixed with one end of a third bracket (15) by a fastener, the upper end of the bottom beam (4) is fixed with a support column (12) by bolts, the support column (12) is fixed with a plurality of first brackets (13) by a fastener, the upper end of the third bracket (15) is fixed with a guide rail (28) by a fastener, the upper end of the guide rail (28) is slidably provided with a slide seat (21), one end of the guide rail (28) is fixed with a hydraulic telescopic device (18) by bolts, one end of the hydraulic telescopic device (18) is fixed with a first fixing plate (15) by bolts 6), the fixing plate (16) is fixed with a guide rod (20) by bolts, the other end of the guide rod (20) is fixed with a slide seat (21) by bolts, the upper end of the slide seat (21) is fixed with a down-the-hole drill (22) by bolts, one end of the down-the-hole drill (22) is connected with a drill bit by a casing (30), one end of the slide seat (21) is fixed with an auxiliary frame (24) by bolts, the casing (30) passes through the auxiliary frame (24), the upper end of the bottom beam (4) is fixed with a plurality of winches (5) by bolts, the winches (5) are connected with a fixing column (26) by a steel wire rope (27), the fixing column (26) is installed and fixed on the top of the hillside, the upper end of the bottom beam (4) is fixed with a controller (7) by bolts, the controller (7) is electrically connected with other electrical devices, and one side of the support column (12) is fixed with a display operator (11) by bolts.
2. A movable high slope continuous drilling device according to claim 1, characterized in that: The first bracket (13) is fixed to the second bracket (14) via a fastener, and the other end of the second bracket (14) is fixed to a guide rail (28) via a fastener.
3. The movable high-slope continuous drilling device according to claim 1 is characterized in that: A first fixing pin (3) is fixed to one side of the bottom beam (4) via bolts, and a second fixing pin (9) is fixed to one side of the support column (12) via bolts.
4. The movable high-slope continuous drilling device according to claim 3 is characterized in that: A support column (12) is fixed to the upper end of the bottom beam (4) via a first reinforcing rib (6), and a second fixing pin (9) is fixed to the support column (12) via a second reinforcing rib (10).
5. The movable high-slope continuous drilling device according to claim 4 is characterized in that: A water tank (17) is fixed between the bottom beams (4) by bolts, and a booster pump (32) is fixed to one side of the water tank (17) by bolts.
6. The movable high-slope continuous drilling device according to claim 5 is characterized in that: The upper end of the water tank (17) is provided with a water injection port (19).
7. The movable high-slope continuous drilling device according to claim 1 is characterized in that: A spray head (23) is fixed to the upper end of the slide seat (21) by means of bolts, and the spray head (23) is connected to a booster pump (32) by means of a hose.
8. The movable high-slope continuous drilling device according to claim 7 is characterized in that: A lighting lamp (25) is fixed to one side of the auxiliary frame (24) by means of bolts, and a limiting frame (29) is fixed to the bottom end of the guide rail (28) by means of bolts.
Citation Information
Patent Citations
Movable construction platform for high and steep slope
CN219157715U