Energy-saving road surface snow melting and deicing device convenient to move and use
By using a battery-powered air pump system and photovoltaic panels for auxiliary charging, high-speed, high-pressure gas is used to break through the ice layer on the road surface, solving the problems of poor applicability and high energy consumption of existing equipment in cold weather, and achieving energy-saving and efficient snow melting and de-icing effects.
Patent Information
- Application Number
- CN202520274386.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-02-20
AI Technical Summary
Existing snow melting and de-icing equipment is poorly suited for colder regions and consumes a lot of electricity; traditional machinery is also ineffective at breaking up ice on roads.
The air pump system, powered by a battery, uses a pressure tank and jet nozzle to spray high-speed, high-pressure gas to break through the ice layer. It combines photovoltaic panels to assist in charging to save energy, and uses a solenoid valve to control the frequency and direction of the gas spray.
It effectively breaks through ice on the road surface, reduces energy consumption, facilitates subsequent large-scale machinery to clear snow and ice, and is suitable for various weather conditions.
Smart Images

Figure CN223646994U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of snow melting and de-icing equipment, specifically an energy-saving road snow melting and de-icing device that is easy to move and use. Background Technology
[0002] In winter, snow accumulation and icing on roads are common problems, seriously affecting traffic safety and flow. Traditional methods for snow melting and de-icing mainly include spreading salt, using chemical de-icing agents, and mechanical snow removal. In addition, there are some heated snow removal devices.
[0003] For example, Chinese patent CN218479094U discloses a road surface snow melting and de-icing device, comprising: a moving module for moving on the road surface; a heating module movably connected to the moving module for moving with the moving module on the road surface to heat the ice and snow on the road surface; and a control module installed on the moving module and connected to the heating module for monitoring the ground depth and driving the heating module to move closer to or further away from the ground based on the ground depth. When removing ice and snow from the road surface, the moving module moves on the road surface, driving the heating module to move, and the heating module heats the ground, melting the ice and snow. When the ground depth decreases, the control module controls the heating module to move towards the ground, ensuring that the ice and snow in low-lying areas receive sufficient heat to melt. This heating and de-icing process ensures that the ice and snow in low-lying areas of the road surface melt completely, thereby enhancing the effectiveness of the heating and de-icing process.
[0004] The snow melting and de-icing device described in the aforementioned patent melts snow and ice on the road surface by heating. However, this method is not suitable for colder regions because the melted water will quickly refreeze, and heating it consumes a lot of electricity. While snowplows and similar machinery can effectively clear snow from roads, they are much more difficult to use for removing ice. Therefore, there is an urgent need in the market for equipment capable of breaking up ice on roads, allowing large machinery to quickly clear snow and ice. Utility Model Content
[0005] The purpose of this invention is to provide an energy-saving road snow melting and de-icing device that is easy to move and use, aiming to improve the problems that existing snow melting and de-icing equipment is not suitable for areas with cold weather, consumes a lot of electricity when in use, and that traditional equipment cannot effectively break the ice layer on the road surface.
[0006] This utility model is implemented as follows:
[0007] An energy-saving road snow melting and de-icing device that is easy to move and use includes a mobile base. A battery is mounted on the upper surface of the mobile base. A pressure tank is installed at the front end of the battery. Multiple air pumps are mounted on the top of the battery, and the exhaust ends of the air pumps are connected to the pressure tank. A smart pressure gauge is mounted on one side of the pressure tank. An air jet connector is mounted on the bottom of the pressure tank. The exhaust end of the air jet connector is tilted downwards, and a solenoid valve is installed at the connection point between the air jet connector and the pressure tank. The solenoid valve and the air pumps are electrically connected to the battery. A photovoltaic panel is mounted on the top of the mobile base, and the photovoltaic panel is electrically connected to the battery.
[0008] Preferably, the movable base has slots at both the front and rear ends, casters at the corners of the bottom surface of the movable base, and symmetrical diagonal braces on both sides of the top of the movable base, with gripping rods at the top of the two diagonal braces; each diagonal brace has a pair of locking feet, and the opposite sides of the locking feet have set screws.
[0009] Preferably, the battery has a retaining plate at both the front and rear ends of its bottom surface, the retaining plate has multiple countersunk holes, the battery has a control panel on its upper surface, the battery has a charging slot on its side, and the battery has multiple connecting slots on its side and top.
[0010] Preferably, the pressure tank has multiple connecting pipes at the top, and each connecting pipe has a connecting cap at the top; the pressure tank has mounting feet on the side, and each mounting foot has a mounting plate at its rear end, with multiple mounting holes evenly distributed on the mounting plate.
[0011] Preferably, the air pump has a fixing foot at the bottom, and the fixing foot has multiple fixing holes; the air pump has an air intake pipe and an air exhaust pipe at the rear end, the air intake pipe has an adapter cap at the end, and the air exhaust pipe is connected to the adapter cap.
[0012] Preferably, the jet connector has a jet nozzle at the bottom, multiple mounting tubes at the top, an electrically controlled valve on the mounting tube, a connecting line on the side of the solenoid valve, a connecting plug at the end of the connecting line, and the connecting plug is electrically connected to the battery; the mounting tube has a mounting cap at the top, and the mounting cap is connected to the air outlet at the bottom of the pressure tank.
[0013] Preferably, a junction box is provided at the bottom of the back of the photovoltaic panel, a power transmission line is provided at the bottom of the junction box, and a connector is provided at the bottom of the power transmission line, which is connected to the battery.
[0014] Preferably, it also includes a filter element, the filter element having vent holes on its side for external air to enter the filter element and be filtered, and the filter element having an adapter at its end, the adapter being threadedly connected to an adapter cap.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. This utility model is equipped with a storage battery, which powers the air pump. The air pump draws a large amount of gas into the pressure tank, making the internal pressure of the pressure tank reach a certain pressure. At the same time, by controlling the opening and closing of the solenoid valve, the gas inside the pressure tank can be ejected from the nozzle at high speed and high pressure. This causes the ice layer on the road surface to be broken up under the action of high-speed and high-pressure gas. By controlling the direction of movement of the entire device, the broken ice layer is blown onto the road surface, so as to facilitate the rapid cleaning of the road surface by large machinery.
[0017] 2. This utility model provides a filter element at the air pump's suction pipe port, which filters the gas drawn in by the air pump, ensuring that the gas pumped into the pressure tank is sufficiently clean. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the structure of the movable base of this utility model;
[0020] Figure 3 This is a schematic diagram of the structure of the storage battery of this utility model;
[0021] Figure 4 This is a schematic diagram of the structure of the pressure tank of this utility model;
[0022] Figure 5 This is a schematic diagram of the structure of the air pump of this utility model;
[0023] Figure 6 This is a schematic diagram of the structure of the jet connector of this utility model;
[0024] Figure 7 This is a schematic diagram of the structure of the photovoltaic panel of this utility model;
[0025] Figure 8 This is a structural schematic diagram of the filter connector of this utility model.
[0026] In the diagram: 1. Movable base; 11. Slot; 12. Casters; 13. Diagonal brace; 14. Grip bar; 15. Clamping foot; 16. Set screw; 2. Battery; 21. Charging slot; 22. Clamping plate; 23. Countersunk hole; 24. Control panel; 25. Connecting slot; 3. Pressure tank; 31. Connecting pipe; 32. Connecting cap; 33. Mounting foot; 34. Mounting plate; 35. Mounting hole; 36. Intelligent pressure... 4. Force gauge; 5. Air pump; 6. Fixing foot; 7. Fixing hole; 8. Suction pipe; 9. Adapter cap; 10. Exhaust pipe; 11. Air jet connector; 2. Air jet nozzle; 3. Mounting pipe; 42. Electric control valve; 53. Mounting cap; 64. Connecting wire; 75. Connecting plug; 8. Photovoltaic panel; 9. Junction box; 10. Power transmission line; 11. Connector; 12. Filter element; 13. Vent hole; 14. Adapter. Detailed Implementation
[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0028] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details:
[0029] Example 1
[0030] like Figure 1 and Figure 4As shown, an energy-saving road snow melting and de-icing device that is easy to move includes a mobile base 1, which facilitates the flexible movement of the entire device. A battery 2 is mounted on the upper surface of the mobile base 1, providing power for the entire device and facilitating its operation. A pressure tank 3 is installed at the front end of the battery 2, storing and pressurizing gas. Multiple air pumps 4 are located on the top of the battery 2, with their exhaust ends connected to the pressure tank 3, allowing for the injection of gas into the pressure tank 3. A smart pressure gauge 36 is mounted on one side of the pressure tank 3, wirelessly connecting to the control mechanism on the battery 2 to transmit pressure data. A jet nozzle 5 is installed at the bottom of the pressure tank 3, with its exhaust end angled downwards, facilitating the ejection of high-pressure, high-speed gas to blow away the ice layer. Furthermore, a solenoid valve is installed at the connection point between the jet connector 5 and the pressure tank 3. The solenoid valve and the air pump 4 are electrically connected to the battery 2. The solenoid valve facilitates the intermittent opening and closing of the solenoid valve, allowing the jet connector 5 to intermittently eject high-pressure, high-speed gas. A photovoltaic panel 6 is installed on the top of the mobile base 1. The photovoltaic panel 6 is electrically connected to the battery 2. This structure facilitates the auxiliary charging of the battery 2 through the photovoltaic panel 6.
[0031] like Figure 2 As shown, the mobile base 1 has slots 11 at both the front and rear ends, which facilitate a stable connection between the battery 2 and the mobile base 1. Universal wheels 12 are located at the corners of the bottom surface of the mobile base 1, allowing for easy movement and use of the entire mobile base 1. Symmetrical diagonal braces 13 are located on both sides of the top of the mobile base 1, with gripping rods 14 at the top of each brace 13; the braces 13 and gripping rods 14 facilitate the easy movement and use of the entire mobile base 1. Each diagonal brace 13 has a pair of locking feet 15, with set screws 16 on the opposite side of the locking feet 15. The engagement of the locking feet 15 and the set screws 16 facilitates the fixing of the photovoltaic panel 6.
[0032] like Figure 3 As shown, the battery 2 has retaining plates 22 at both the front and rear ends of its bottom surface. Each retaining plate 22 has multiple countersunk holes 23. The fit between the retaining plates 22 and the countersunk holes 23 facilitates the fixing of the battery 2 to its position using bolts. A control panel 24 is located on the upper surface of the battery 2, allowing for convenient control of the entire device's operation. A charging slot 21 is located on the side of the battery 2, facilitating charging. Multiple connecting slots 25 are located on the side and top of the battery 2, facilitating electrical connection between the battery 2 and various components.
[0033] like Figure 4As shown, the pressure tank 3 has multiple connecting pipes 31 on its top, and each connecting pipe 31 has a connecting cap 32 on its top. The connection between the connecting pipes and the connecting caps 32 facilitates the connection between the pressure tank 3 and the exhaust end of the air pump 4. The pressure tank 3 has mounting feet 33 on its side, and a mounting plate 34 is located at the rear end of the mounting feet 33. The mounting plate 34 has multiple mounting holes 35 evenly distributed on it. The connection between the mounting feet 33 and the mounting holes 35 facilitates the fixing of the pressure tank 3 to the front end of the battery 2 with bolts.
[0034] like Figure 5 As shown, the air pump 4 has a fixing foot 41 at its bottom, and the fixing foot 41 has multiple fixing holes 42. The fixing foot 41 and the fixing holes 42 are designed to facilitate fixing the position of the air pump 4 with bolts. The air pump 4 has an intake pipe 43 and an exhaust pipe 45 at its rear end. The intake pipe 43 is used to draw in external gas, and the exhaust pipe 45 is used to inject the drawn gas into the pressure tank 3. The end of the intake pipe 43 has an adapter cap 44, which is used to connect the intake pipe 43 to other components. The exhaust pipe 45 is connected to the connecting cap 32.
[0035] like Figure 6 As shown, the jet connector 5 has a jet nozzle 51 at its bottom, which facilitates the ejection of gas, thereby breaking the ice layer on the road surface with high-speed, high-pressure gas. The top of the jet connector 5 has multiple mounting pipes 52, which facilitate connection between the jet connector 5 and the pressure tank 3. An electric control valve 53 is mounted on each mounting pipe 52. A connecting wire 55 is located on the side of the solenoid valve, and a connecting plug 56 is located at the end of the connecting wire 55. The connecting plug 56 is electrically connected to the battery 2. The electric control valve 53 facilitates the opening and closing of the mounting pipe 52. A mounting cap 54 is located at the top of the mounting pipe 52, which connects to the air outlet at the bottom of the pressure tank 3.
[0036] like Figure 7 As shown, a junction box 61 is provided at the bottom of the back of the photovoltaic panel 6, a power transmission line 62 is provided at the bottom of the junction box 61, and a connector 63 is provided at the bottom of the power transmission line 62. The connector 63 is connected to the storage battery 2. This structure facilitates the direct transmission of the power generated by the photovoltaic panel 6 to the storage battery 2 for storage.
[0037] Example 2
[0038] like Figure 1 box Figure 4As shown, an energy-saving road snow melting and de-icing device that is easy to move includes a mobile base 1, which facilitates the flexible movement of the entire device. A battery 2 is mounted on the upper surface of the mobile base 1, providing power for the entire device and facilitating its operation. A pressure tank 3 is installed at the front end of the battery 2, storing and pressurizing gas. Multiple air pumps 4 are located on the top of the battery 2, with their exhaust ends connected to the pressure tank 3, allowing for the injection of gas into the pressure tank 3. A smart pressure gauge 36 is mounted on one side of the pressure tank 3, wirelessly connecting to the control mechanism on the battery 2 to transmit pressure data. A jet nozzle 5 is installed at the bottom of the pressure tank 3, with its exhaust end angled downwards, facilitating the ejection of high-pressure, high-speed gas to blow away the ice layer. Furthermore, a solenoid valve is installed at the connection point between the jet connector 5 and the pressure tank 3. The solenoid valve and the air pump 4 are electrically connected to the battery 2. The solenoid valve facilitates the intermittent opening and closing of the solenoid valve, allowing the jet connector 5 to intermittently eject high-pressure, high-speed gas. A photovoltaic panel 6 is installed on the top of the mobile base 1. The photovoltaic panel 6 is electrically connected to the battery 2. This structure facilitates the auxiliary charging of the battery 2 through the photovoltaic panel 6.
[0039] like Figure 2 As shown, the mobile base 1 has slots 11 at both the front and rear ends, which facilitate a stable connection between the battery 2 and the mobile base 1. Universal wheels 12 are located at the corners of the bottom surface of the mobile base 1, allowing for easy movement and use of the entire mobile base 1. Symmetrical diagonal braces 13 are located on both sides of the top of the mobile base 1, with gripping rods 14 at the top of each brace 13; the braces 13 and gripping rods 14 facilitate the easy movement and use of the entire mobile base 1. Each diagonal brace 13 has a pair of locking feet 15, with set screws 16 on the opposite side of the locking feet 15. The engagement of the locking feet 15 and the set screws 16 facilitates the fixing of the photovoltaic panel 6.
[0040] like Figure 3 As shown, the battery 2 has retaining plates 22 at both the front and rear ends of its bottom surface. Each retaining plate 22 has multiple countersunk holes 23. The fit between the retaining plates 22 and the countersunk holes 23 facilitates the fixing of the battery 2 to its position using bolts. A control panel 24 is located on the upper surface of the battery 2, allowing for convenient control of the entire device's operation. A charging slot 21 is located on the side of the battery 2, facilitating charging. Multiple connecting slots 25 are located on the side and top of the battery 2, facilitating electrical connection between the battery 2 and various components.
[0041] like Figure 4As shown, the pressure tank 3 has multiple connecting pipes 31 on its top, and each connecting pipe 31 has a connecting cap 32 on its top. The connection between the connecting pipes and the connecting caps 32 facilitates the connection between the pressure tank 3 and the exhaust end of the air pump 4. The pressure tank 3 has mounting feet 33 on its side, and a mounting plate 34 is located at the rear end of the mounting feet 33. The mounting plate 34 has multiple mounting holes 35 evenly distributed on it. The connection between the mounting feet 33 and the mounting holes 35 facilitates the fixing of the pressure tank 3 to the front end of the battery 2 with bolts.
[0042] like Figure 5 As shown, the air pump 4 has a fixing foot 41 at its bottom, and the fixing foot 41 has multiple fixing holes 42. The fixing foot 41 and the fixing holes 42 are designed to facilitate fixing the position of the air pump 4 with bolts. The air pump 4 has an intake pipe 43 and an exhaust pipe 45 at its rear end. The intake pipe 43 is used to draw in external gas, and the exhaust pipe 45 is used to inject the drawn gas into the pressure tank 3. The end of the intake pipe 43 has an adapter cap 44, which is used to connect the intake pipe 43 to other components. The exhaust pipe 45 is connected to the connecting cap 32.
[0043] like Figure 6 As shown, the jet connector 5 has a jet nozzle 51 at its bottom, which facilitates the ejection of gas, thereby breaking the ice layer on the road surface with high-speed, high-pressure gas. The top of the jet connector 5 has multiple mounting pipes 52, which facilitate connection between the jet connector 5 and the pressure tank 3. An electric control valve 53 is mounted on each mounting pipe 52. A connecting wire 55 is located on the side of the solenoid valve, and a connecting plug 56 is located at the end of the connecting wire 55. The connecting plug 56 is electrically connected to the battery 2. The electric control valve 53 facilitates the opening and closing of the mounting pipe 52. A mounting cap 54 is located at the top of the mounting pipe 52, which connects to the air outlet at the bottom of the pressure tank 3.
[0044] like Figure 7 As shown, a junction box 61 is provided at the bottom of the back of the photovoltaic panel 6, a power transmission line 62 is provided at the bottom of the junction box 61, and a connector 63 is provided at the bottom of the power transmission line 62. The connector 63 is connected to the storage battery 2. This structure facilitates the direct transmission of the power generated by the photovoltaic panel 6 to the storage battery 2 for storage, so as to achieve the purpose of energy saving.
[0045] like Figure 1 and Figure 8 As shown, it also includes a filter element 7. The filter element 7 has a vent hole 71 on its side, which is used for external air to enter the filter element 7 and be filtered. The filter element 7 has an adapter 72 at its end, which is threadedly connected to the adapter cap 44. This structure is convenient for the air pump 4 to filter the gas it draws in when it is drawing in air, and can effectively remove dust from the gas.
[0046] Working Principle: During use, charge the battery 2 according to requirements and ensure a stable wireless connection between the smart pressure gauge 36 and the control panel 24. Control the air pump 4 to inflate the pressure tank 3 until the internal pressure reaches the set value. Once the pressure tank 3 reaches the set value, the air pump 4 will stop operating. Simultaneously, set the frequency of intermittent opening of the solenoid valve to allow the entire device to smoothly break up road ice using high-pressure, high-speed gas. Simply align the nozzle 51 with the gap between the ice layer and the road surface to allow high-pressure, high-speed gas to be blown into the ice layer for effective ice breaking. By controlling the opening and closing of the solenoid valve, the air intake and exhaust speeds of the pressure tank 3 are the same, allowing the nozzle 5 to continuously spray air. This continuous high-pressure, high-speed airflow effectively breaks up the road ice layer. It is simple and convenient to use, easy for operators to use.
[0047] In summary, compared with the prior art, this application, by setting up a storage battery 2, supplies power to an air pump 4, which in turn draws a large amount of gas into the pressure tank 3, making the internal pressure of the pressure tank 3 reach a certain pressure. At the same time, by controlling the opening and closing of the solenoid valve, the gas inside the pressure tank 3 can be ejected from the nozzle 51 at high speed and high pressure, so that the ice layer on the road surface can be broken up under the high speed and high pressure gas. By controlling the direction of movement of the entire device, the broken ice layer is blown onto the road surface, so as to facilitate the rapid cleaning of the road surface by large machinery.
[0048] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. An energy-saving road snow melting and de-icing device that is easy to move and use, comprising a mobile base (1), characterized in that, The upper surface of the mobile base (1) is provided with a storage battery (2), a pressure tank (3) is installed at the front end of the storage battery (2), and multiple air pumps (4) are provided on the top of the storage battery (2). The exhaust end of the air pump (4) is connected to the pressure tank (3). A smart pressure gauge (36) is provided on one side of the pressure tank (3). An air jet connector (5) is installed at the bottom of the pressure tank (3). The exhaust end of the air jet connector (5) is inclined downward. A solenoid valve is provided at the position where the air jet connector (5) is connected to the pressure tank (3). The solenoid valve and the air pump (4) are electrically connected to the storage battery (2). A photovoltaic panel (6) is provided on the top of the mobile base (1). The photovoltaic panel (6) is electrically connected to the storage battery (2).
2. The energy-saving road snow melting and de-icing device that is easy to move and use according to claim 1, characterized in that, The movable base (1) has slots (11) at both the front and rear ends. The movable base (1) has casters (12) at the bottom corners. The movable base (1) has symmetrical diagonal braces (13) on both sides of the top. The top of the two diagonal braces (13) has a gripping rod (14). Each diagonal brace (13) has a pair of locking feet (15). The opposite side of the locking feet (15) has a set screw (16).
3. The energy-saving road snow melting and de-icing device that is easy to move and use according to claim 2, characterized in that, The battery (2) has a retaining plate (22) at both the front and rear ends of its bottom surface. The retaining plate (22) has multiple countersunk holes (23). The battery (2) has a control panel (24) on its upper surface. The battery (2) has a charging slot (21) on its side. The battery (2) has multiple connecting slots (25) on its side and top.
4. The energy-saving road snow melting and de-icing device that is easy to move and use according to claim 1, characterized in that, The pressure tank (3) has multiple connecting pipes (31) on its top, and connecting caps (32) on the top of the connecting pipes (31); the pressure tank (3) has mounting feet (33) on its side, and mounting plates (34) are provided at the rear end of the mounting feet (33), and multiple mounting holes (35) are evenly provided on the mounting plates (34).
5. The energy-saving road snow melting and de-icing device that is easy to move and use according to claim 4, characterized in that, The air pump (4) has a fixed foot (41) at the bottom, and the fixed foot (41) has multiple fixing holes (42); the air pump (4) has an air intake pipe (43) and an exhaust pipe (45) at the rear end, the end of the air intake pipe (43) has an adapter cap (44), and the exhaust pipe (45) is connected to the connecting cap (32).
6. The energy-saving road snow melting and de-icing device that is easy to move and use according to claim 1, characterized in that, The jet connector (5) has a jet nozzle (51) at the bottom and multiple mounting pipes (52) at the top. An electric control valve (53) is installed on the mounting pipe (52). A connecting line (55) is provided on the side of the solenoid valve. A connecting plug (56) is provided at the end of the connecting line (55). The connecting plug (56) is electrically connected to the storage battery (2). An installation cap (54) is provided at the top of the mounting pipe (52). The installation cap (54) is connected to the air outlet at the bottom of the pressure tank (3).
7. The energy-saving road snow melting and de-icing device that is easy to move and use according to claim 1, characterized in that, The photovoltaic panel (6) has a junction box (61) at the bottom of its back side. The junction box (61) has a power transmission line (62) at its bottom end. The power transmission line (62) has a connector (63) at its bottom end. The connector (63) is connected to the battery (2).
8. The energy-saving road snow melting and de-icing device that is easy to move and use according to claim 5, characterized in that, It also includes a filter element (7), which has a vent hole (71) on its side for external air to enter the filter element (7) and be filtered. The filter element (7) has an adapter (72) at its end, which is threadedly connected to an adapter cap (44).
Citation Information
Patent Citations
Road surface snow melting and deicing device
CN218479094U