Air inlet sand prevention structure, engine assembly and vehicle

Abstract

The utility model relates to an air inlet sand prevention structure, an engine assembly and a vehicle, and belongs to the technical field of vehicles, and the air inlet sand prevention structure comprises an output pipe, an input pipe, a separation assembly and an adjusting assembly. One end of the input pipe sleeves the output pipe; a gap is formed between the outer wall of the output pipe and the inner wall of the input pipe. The separation assembly is located in the input pipe, comprises blades and is used for guiding airflow to rotate around the axis of the input pipe and throwing sand to the gap through centrifugal force. The adjusting assembly is used for adjusting the blade angle to adapt to different working conditions, the blade angle is consistent with the axial direction of the input pipe during normal driving, blocking to airflow is reduced, and the air inflow of an engine is ensured; during cross-country, the blade angle is adjusted to enable air to rotate, and sand and stone are conveyed to gaps through centrifugal force to achieve sand and stone separation. The structure effectively prevents gravels from entering the engine, protects equipment and improves reliability. The engine assembly and the vehicle adopt the structure, so that the adaptability in a severe environment is enhanced.

Description

Technical Field

[0001] This application relates to the technical field of vehicles, and more particularly to an air intake sandproof structure, an engine assembly, and a vehicle. Background Technology

[0002] With the improvement of people's living standards and their enthusiasm for outdoor adventure activities, the demand for off-road vehicles is increasing. While traditional off-road vehicles have a certain degree of passability in complex road conditions, they have many shortcomings. Sand entering the air filter assembly is a common but serious problem when driving in the desert. As the engine draws in air, sand particles also enter the intake system. Once inside the air filter assembly, these sand particles damage the filter element's filtering capacity, easily causing sand to enter the engine cylinders, resulting in abnormal wear, cylinder scoring, and even engine failure. Utility Model Content

[0003] This application addresses, to at least some extent, one of the technical problems in the related art.

[0004] Therefore, this application aims to provide an air intake sand-proof structure, an engine assembly, and a vehicle. The angle of the blades can be adjusted by adjusting the components. When off-roading, adjusting the blade angle allows the blades to guide the airflow to rotate around the axis of the input pipe. Under the action of centrifugal force, sand and gravel are thrown into the gap between the input and output pipes, thereby achieving effective separation of sand and gravel.

[0005] To achieve the above objectives, in a first aspect, this application provides an air intake sand-proof structure, comprising:

[0006] Output tube;

[0007] An input tube, one end of which is fitted onto the output tube; a gap exists between the outer wall of the output tube and the inner wall of the input tube;

[0008] A separation assembly located within the input pipe; the separation assembly includes blades for guiding airflow to rotate about the axis of the input pipe;

[0009] An adjustment component for adjusting the angle of the blade.

[0010] In this technical solution, the blades guide the airflow to rotate around the axis of the input pipe. Due to the weight of the sand and gravel, centrifugal force causes them to be thrown into the gap between the input and output pipes, effectively separating the sand and gravel. This effectively prevents sand and gravel from entering critical components such as the engine, protecting the equipment from wear and blockage, improving equipment reliability and service life, and ensuring smooth air intake. Furthermore, the blade angle can be adjusted via an adjustment mechanism. Since sand and gravel rarely enter the engine during normal operation, the blade's guiding direction can be adjusted to be the same as the axis of the input pipe, reducing obstruction of the airflow and ensuring sufficient airflow. This system can be adjusted according to requirements to adapt to current operating conditions.

[0011] In some embodiments of this application, the blade is provided with a rotating shaft, which is rotatably connected to the input pipe;

[0012] The adjustment component is used to rotate the shaft.

[0013] In this technical solution, the adjustment component adjusts the blade angle by rotating a shaft. This design allows the blade angle to be flexibly adjusted according to different operating conditions, thereby precisely controlling the rotation speed and direction of the airflow. When operating conditions change or the sand and gravel content varies, the separation effect can be optimized by adjusting the blade angle, further improving sand-proof performance and enhancing the adaptability and stability of the air intake sand-proof structure.

[0014] In some embodiments of this application, the adjusting assembly includes a linkage gear and a gear ring; the gear ring is sleeved on the input tube, and one end of the rotating shaft extends outside the input tube;

[0015] The linkage gear is located at one end of the rotating shaft extending outside the input pipe; the linkage gear meshes with the gear ring.

[0016] In this technical solution, the rotation of the gear ring drives the rotation of the linkage gear, which in turn causes the shaft to change the angle of the blades. This transmission structure is simple and reliable, accurately transmitting the rotation of the gear ring to the shaft, thereby driving the blades to rotate. Through the meshing transmission of the linkage gear and the gear ring, precise adjustment of the blade angle can be achieved, with high transmission efficiency and fast response speed, ensuring the accuracy and timeliness of blade angle adjustment.

[0017] In some embodiments of this application, the adjusting component further includes an actuator for driving the gear ring to rotate.

[0018] In this technical solution, the addition of actuators enables automated control of blade angle adjustment, eliminating the need for manual adjustment and significantly improving operational convenience and accuracy. In practical use, the blade angle can be automatically adjusted based on preset programs or information such as sand and gravel content fed back by sensors, ensuring the air intake sand-proof structure is always in optimal working condition. This further enhances the sand-proof effect and the degree of automation in equipment operation, while reducing manual maintenance costs.

[0019] In some embodiments of this application, the separating end is connected to the outer wall of the output tube so that a separating groove is formed between the separating end and the insertion end.

[0020] In the technical solution, the separation tank provides a temporary storage space for sand and gravel. Under the action of centrifugal force, the sand and gravel can smoothly enter the separation tank, avoiding the sand and gravel from entering the engine compartment and damaging the engine.

[0021] In some embodiments of this application, a collection box is provided on the side of the separation tank facing the ground, and a through hole connects the collection box and the separation tank.

[0022] In this technical solution, the collection box collects the sand and gravel from the separation tank, facilitating regular cleaning and removal. The through-hole design ensures that sand and gravel can smoothly enter the collection box from the separation tank while preventing significant airflow leakage, thus ensuring the normal operation of the air intake system. This structure further improves the sand removal function of the air intake and sand control structure, enhancing the efficiency and convenience of sand and gravel collection and reducing the potential damage to the equipment caused by sand and gravel.

[0023] In some embodiments of this application, the bottom of the collection box is provided with a sand discharge hole.

[0024] In the technical solution, sand has less impact on the vehicle and can be discharged. Therefore, smaller sand particles can be discharged smoothly through the sand discharge hole, while larger stones are stored in the collection box to prevent them from hitting the vehicle and engine.

[0025] In some embodiments of this application, the angle between the guiding direction of the blade and the axial direction of the input pipe is in the range of 0° to 15°.

[0026] In the technical solution, the blades at this angle conform to the actual operating conditions. If the angle is too large, not only will the sand and gravel not be separated, but the airflow intake will also be affected, thus impacting the engine's operation.

[0027] Secondly, this application also provides an engine assembly comprising:

[0028] An engine, on which an air intake sand-proof structure as described above is connected.

[0029] In this technical solution, the air intake sand-proof structure is applied to the engine assembly, effectively preventing sand and gravel from entering the engine, protecting critical engine components from wear and blockage, and improving engine reliability and lifespan. Furthermore, the vehicle can adjust the blade angle as needed to selectively separate sand and gravel.

[0030] Thirdly, this application also provides a vehicle, including:

[0031] The vehicle body is equipped with the engine assembly described above.

[0032] In this technical solution, the vehicle utilizes an engine assembly with an air intake and sand-proof structure, effectively mitigating the impact of harsh environments such as sand and gravel on the engine. This improves the vehicle's reliability and durability in challenging road conditions like deserts and Gobi. The engine is better protected, reducing malfunctions and repair costs caused by sand and gravel entering the engine. Simultaneously, it ensures the vehicle's power performance and operational stability, allowing it to maintain good driving performance even in complex environments, thus expanding the vehicle's range of applications and usage scenarios.

[0033] As can be seen from the above technical solutions, additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of the air intake sand-proof structure according to the embodiments of this application;

[0035] Figure 2 This is a front view of the air intake sand-proof structure according to an embodiment of this application;

[0036] Figure 3 This is a cross-sectional structural diagram of the air intake sand-proof structure according to the embodiments of this application;

[0037] Figure 4 This is a cross-sectional view of the air intake sand-proof structure according to an embodiment of this application;

[0038] Figure 5 This is a front view of the air intake sand-proof structure blade according to an embodiment of this application from another angle;

[0039] Figure 6 This is a cross-sectional structural diagram of the air intake sand-proof structure according to an embodiment of this application.

[0040] In the above figures: 100, output pipe; 200, input pipe; 300, separation groove; 400, through hole; 500, connecting pipe; 600, collection box; 601, sand discharge hole; 700, blade; 800, rotating shaft; 900, connecting piece; 110, linkage gear; 120, gear ring; 130, actuator. Detailed Implementation

[0041] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0042] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," 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, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0043] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0045] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0046] It should be noted that in the automotive field, some enthusiasts choose to go off-roading in the desert or encounter situations with poor road conditions, in which case sand and gravel may enter the vehicle.

[0047] In the existing technology, sand entering the air filter assembly is a common but serious problem when a car is off-roading or encountering poor road conditions. As the engine draws in air, sand particles also enter the intake system along with the air. After entering the air filter assembly, the sand particles will damage the filter element's filtering capacity and can easily cause sand particles to enter the engine cylinder, resulting in abnormal wear, cylinder scoring, or even engine failure.

[0048] Based on this, this application proposes an air intake sand-proof structure, an engine assembly, and a vehicle. The blade angle can be adjusted via an adjustment component. During normal driving, the blade's guiding direction can be adjusted to be the same as the axis of the input pipe, reducing the obstruction of air within the input pipe and thus ensuring sufficient airflow. During off-road driving, adjusting the blade angle allows the blades to guide the airflow to rotate around the input pipe axis. Due to the weight of sand and gravel, centrifugal force forces them into the gap between the input and output pipes, effectively separating the sand and gravel. This allows for selective sand and gravel separation based on different conditions, solving the problem of sand and gravel entering the engine and causing wear in existing technologies.

[0049] In the following, embodiments of this application will be described in detail with reference to the accompanying drawings.

[0050] Referring to all the accompanying drawings, in one illustrative embodiment of the air intake sand-proof structure, engine assembly, and vehicle of this application, the air intake sand-proof structure includes: an output pipe 100 and an input pipe 200, which are connected and communicate with each other. The input pipe 200 is communicated with an air filter, and the output pipe 100 is communicated with... The input pipe 200 is a conduit for air intake, while the output pipe 100 is a conduit for air output to the engine.

[0051] Furthermore, one end of the output pipe 100 is an insertion end. One end of the input pipe 200 is a separation end; the separation end is fitted onto the insertion end; there is a gap between the inner wall of the separation end and the outer wall of the insertion end. That is, one end of the input pipe 200 is fitted onto the output pipe 100; there is a gap between the outer wall of the output pipe 100 and the inner wall of the input pipe 200. The main function of the input pipe 200 and the output pipe 100 is to efficiently and stably deliver the air, after passing through the air filter and being treated, to the engine's air intake. It is usually connected to the air filter.

[0052] In some embodiments, sand and gravel may enter the inlet pipe 200 in the event of air filter damage or other special circumstances. Therefore, a separation assembly is provided to separate sand and gravel entering the inlet pipe 200 to prevent them from entering the outlet pipe 100. The separation assembly is located within the inlet pipe 200; the separation assembly includes blades 700 for guiding the airflow entering through it to rotate, causing the airflow to rotate about the axis of the inlet pipe 200. Specifically, the air contacts the blades 700 and changes its direction of travel along the angle of the blades 700.

[0053] Through the above scheme, the blade 700 can guide the airflow to rotate around the axis of the input pipe 200. The sand and gravel are heavy and will be thrown into the gap between the input pipe 200 and the output pipe 100 under the action of centrifugal force, thereby achieving effective separation of sand and gravel, effectively preventing sand and gravel from entering key components such as the engine, protecting the equipment from sand and gravel wear and blockage, improving the reliability and service life of the equipment, and ensuring smooth air intake.

[0054] In some embodiments, the air intake sand-proof structure further includes an adjustment component for adjusting the angle of the blades 700 to regulate the airflow direction. The adjustment component allows for adjustment of the blade angle 700. When driving on paved roads, sand and gravel rarely enter the engine. In such cases, the blades 700 can be adjusted so that their guiding direction is aligned with the axis of the input pipe 200, reducing obstruction of the airflow into the input pipe 200 and ensuring sufficient airflow. This allows for adjustments as needed to adapt to current operating conditions.

[0055] In some embodiments, multiple blades 700 are provided. Multiple blades 700 drive the airflow to achieve better airflow rotation, thereby improving the sand and gravel separation effect.

[0056] It is understandable that the width direction of blade 700 is the air guiding direction of blade 700. When the width direction of blade 700 is not the same as the axis of inlet pipe 200, the side of blade 700 away from outlet pipe 100 is the windward side. After the airflow comes into contact with the windward side, it moves along the side wall, that is, along the width direction of blade 700, thereby guiding the airflow.

[0057] In some embodiments, the inlet pipe 200 and the outlet pipe 100 are circular pipes. Circular pipes better suit the connection to the engine's air intake, and their shape conforms to aerodynamic principles, effectively reducing airflow resistance within the pipe and allowing for smoother airflow, thereby improving intake efficiency. This design also reduces airflow turbulence and eddies, further optimizing airflow transmission and ensuring sufficient and stable airflow for engines and other equipment. Furthermore, the airflow guided by the blades 700, upon contacting the inner wall of the circular pipe, rotates and advances along the inner wall, creating a cyclone effect and increasing centrifugal force, thereby further enhancing the separation of sand and gravel.

[0058] In some embodiments, the blades 700 extend along the axis of the inlet pipe 200. Multiple blades 700 are spaced apart around the axis of the inlet pipe 200. This design efficiently guides the airflow to rotate along the axis of the inlet pipe 200, causing sand and stones to be thrown against the inner wall of the inlet pipe 200 by centrifugal force and moved to the gap between the outlet pipe 100 and the inlet pipe 200.

[0059] In some embodiments, each blade 700 has the same size and shape. This ensures that the airflow passing through each blade 700 has the same speed, and that the airflow can rotate to generate a cyclone.

[0060] Furthermore, the shape of the blade 700 can be any shape, including but not limited to rectangles, triangles, etc. Taking a rectangular blade 700 as an example, its length direction is set along the radial direction of the inlet pipe 200, the thickness of the blade 700 is 2~3mm, and the length of the blade 700 is 10mm. The design of the blade under this size is more reasonable, which conforms to the size of the daily inlet pipe 200. Moreover, the structural strength of the blade under this thickness is sufficient, and it will not obstruct the airflow too much, thereby ensuring the amount of air entering the engine.

[0061] In some embodiments, a rotating shaft 800 is provided on the blade 700, and the rotating shaft 800 is rotatably connected to the inlet pipe 200. The blade 700 is rotatably connected to the inlet pipe 200 via the rotating shaft 800, and when the blade 700 adjusts its angle, it rotates along the axis of the rotating shaft 800. Specifically, one side of the blade 700 in the width direction is connected to the rotating shaft 800. When the rotating shaft 800 is rotated, the angle in the width direction of the blade 700 changes, thereby changing the air guiding angle of the blade 700.

[0062] In some embodiments, a connector 900 is provided inside the input pipe 200. One end of the rotating shaft 800 passes through and is rotatably connected to the input pipe 200, and the other end passes through and is rotatably connected to the connector 900. This structural design achieves a stable connection between the blade 700 and the input pipe 200, while ensuring the flexible rotation of the blade 700. The addition of the connector 900 enhances the support stability of the rotating shaft 800, enabling it to transmit power more precisely when adjusting the angle of the blade 700, ensuring that the blade 700 maintains a stable working state under different operating conditions.

[0063] Furthermore, the connector 900 is located on the axis of the input pipe 200, ensuring that the multiple blades 700 are distributed circumferentially along the input pipe 200.

[0064] Furthermore, the connector 900 is a shaft-like component, which can be either a cylinder or a tube. The axis of the connector 900 coincides with the axis of the input pipe 200. This ensures that the air passing through the connector 900 is not affected by it, reducing irregularities in the connector 900 that could obstruct airflow and cause turbulence.

[0065] In some embodiments, the adjustment component is used to rotate the shaft 800. The adjustment component adjusts the blade angle 700 by rotating the shaft 800. This design allows the blade angle 700 to be flexibly adjusted according to different operating conditions, thereby precisely controlling the rotation speed and direction of the airflow. When operating conditions change or the sand and gravel content varies, the separation effect can be optimized by adjusting the blade angle 700, further improving sand-proof performance and enhancing the adaptability and stability of the air intake sand-proof structure.

[0066] In some embodiments, the adjusting assembly includes a linkage gear 110 and a gear ring 120; the gear ring 120 is sleeved on the input tube 200, and one end of the rotating shaft 800 near the outer wall of the input tube 200 extends outside the input tube 200. The rotating shaft 800 can rotate within the input tube 200 to ensure that the blade 700 can rotate. The linkage gear 110 is located at the end of the rotating shaft 800 extending outside the input tube 200; the gear ring 120 meshes with the linkage gear 110. The rotation of the gear ring 120 drives the linkage gear 110 to rotate, thereby changing the angle of the blade 700 driven by the rotating shaft 800. This transmission structure is simple and reliable, accurately transmitting the rotation of the gear ring 120 to the rotating shaft 800, thus driving the blade 700 to rotate. Through the meshing transmission of the linkage gear 110 and the gear ring 120, precise adjustment of the blade 700 angle can be achieved, with high transmission efficiency and fast response speed, ensuring the accuracy and timeliness of the blade 700 angle adjustment.

[0067] Furthermore, each blade 700 corresponds to a rotating shaft 800, and each rotating shaft 800 corresponds to a linkage gear 110. All linkage gears 110 mesh with the gear ring 120 to ensure that all blades 700 can be adjusted at the same angle, so that the wind direction angle generated by each blade 700 is the same as that of the axis, thus achieving the effect of rotating wind.

[0068] Furthermore, the linkage gear 110 is coaxially mounted at one end of the rotating shaft 800 extending beyond the input pipe 200. The teeth of the gear ring 120 are located on its end face, and the linkage gear 110 meshes with the gear ring 120. The axis of the gear ring 120 is collinear with the axis of the input pipe 200. When the gear ring 120 rotates along its axis, it drives all the linkage gears 110 to rotate, thereby achieving angle adjustment of all blades 700.

[0069] It is understandable that, in order for all 700 blades to rotate at the same angle and synchronously during flipping, the specifications of each gear must be identical, specifically the module and number of teeth. Alternatively, standard parts of the same specifications can be used.

[0070] Furthermore, in this application, the width direction of each blade 700 is at the same angle to the axis of the input pipe 200 under any circumstances, so as to ensure that the direction of the airflow directed by all blades 700 is at the same angle to the axis of the input pipe 200 under any circumstances, and to ensure that the airflow after being guided by the blades 700 is a rotating airflow, which can make the sand and gravel adhere tightly to the inner wall of the input pipe 200 under the action of centrifugal force.

[0071] In some embodiments, the adjustment assembly further includes an actuator 130, which drives the gear ring 120 to rotate. The actuator 130 enables automated control of the blade 700° angle adjustment, eliminating the need for manual adjustment and significantly improving operational convenience and accuracy. In practical use, the blade 700° angle can be automatically adjusted based on preset programs or information such as sand and gravel content fed back by sensors, ensuring the air intake sand-proof structure is always in optimal working condition, further improving the sand-proof effect and the degree of automation in equipment operation, while reducing manual maintenance costs.

[0072] In some embodiments, the actuator 130 can be any structure such as a push rod, hydraulic rod, pneumatic rod, or linear motor. Its fixed end is fixed to the input pipe 200, and its output end is connected to the gear ring 120. The output end of the actuator 130 moves away from or towards the fixed end, thereby driving the gear ring 120 to rotate along the axis of the input pipe 200. This achieves the rotation of the gear ring 120.

[0073] In some embodiments, the output end of the actuator 130 is movably connected to the gear ring 120 to ensure that the output end of the actuator 130 can drive the gear ring 120 to rotate when it extends or retracts. Alternatively, the output end of the actuator 130 can be hinged to the gear ring 120.

[0074] In another embodiment, the actuator 130 in the adjustment assembly can be replaced by a motor. The motor is connected to a drive gear, which meshes with a gear ring 120. When the motor drives the drive gear to rotate, the gear ring 120 rotates and drives the linkage gear 110 to rotate, thereby realizing the angle adjustment of the blade 700.

[0075] In another embodiment, the adjustment assembly can be a linkage structure, with the linkages hinged to each blade 700. The actuator 130 is used to pull all the linkages to move towards or away from the output tube 100, thereby enabling the linkages to drive the blades 700 to flip.

[0076] In some embodiments, the end of the input pipe 200 near the output pipe 100 is connected to the outer wall of the output pipe 100. That is, the disconnected end of the input pipe 200 is connected to the outer wall of the output pipe 100, so that a separation groove 300 is formed between the disconnected end and the insertion end. The separation groove 300 provides a temporary storage space for sand and gravel, which can smoothly enter the separation groove 300 under the action of centrifugal force, preventing sand and gravel from entering the engine compartment and damaging the engine.

[0077] It is understandable that the input pipe 200 and the output pipe 100 are connected to form a complete air intake pipe. Furthermore, the input pipe 200 and the output pipe 100 can be integrally formed to improve the strength of the structure.

[0078] In some embodiments, a collection box 600 is provided on the side of the separation trough 300 facing the ground, which can also be understood as the collection box 600 being located at the bottom end of the separation trough 300. A through hole 400 connects the collection box 600 and the separation trough 300. The collection box 600 can collect sand and gravel within the separation trough 300, facilitating regular cleaning and discharge. The design of the through hole 400 ensures that sand and gravel can smoothly enter the collection box 600 from the separation trough 300 while preventing excessive airflow leakage, ensuring the normal operation of the air intake system. This structure further improves the sand discharge function of the air intake sand prevention structure, enhances the efficiency and convenience of sand and gravel collection, and reduces the potential damage of sand and gravel to the equipment.

[0079] Furthermore, the collection box 600 is fixedly connected to the input pipe 200, and the sand and gravel entering the separation tank 300 enter the collection box 600 through the through hole 400.

[0080] In another embodiment, the collection box 600 and the input pipe 200 are detachably connected. When there is too much sand and gravel in the collection box 600, the driver can manually remove the collection box 600 and empty it.

[0081] In some embodiments, a connecting pipe 500 is provided between the collection box 600 and the outer wall of the input pipe 200, that is, the collection box 600 and the separation groove 300 are connected by the connecting pipe 500, and the interior of the connecting pipe 500 is the aforementioned through hole 400. The design of the connecting pipe 500 facilitates the installation of the collection box 600 and avoids large-scale air leakage, thus ensuring the air intake volume.

[0082] In another embodiment, the separation tank 300 is connected to a sand discharge pipe through a through hole 400. The sand discharge pipe can be directly connected to the outside of the vehicle. During vehicle operation, sand and gravel entering the separation tank 300 enter the sand discharge pipe through the through hole 400 and are discharged to the outside of the vehicle through the sand discharge pipe. This eliminates the need for the driver to clean the tank regularly, thus improving the user experience.

[0083] In some embodiments, the bottom of the collection box 600 is provided with a sand discharge hole 601. Sand has little impact on the vehicle and can be discharged, so smaller sand particles can be discharged smoothly through the sand discharge hole 601, while larger stones are stored in the collection box 600 to prevent stones from hitting the vehicle and engine.

[0084] Understandably, the function of the sand discharge hole 601 is to discharge sand and store larger stones, so the diameter of the sand discharge hole 601 should not be too large, just large enough to allow smaller sand and stones to pass through.

[0085] Furthermore, a filter screen can be installed at the sand discharge hole 601 of the collection box 600 to improve the filtration effect and allow the size of the sand to be filtered to be selected according to the needs.

[0086] Understandably, to ensure that sand and gravel enter the collection box 600, the through hole 400 is opened at the bottom of the input pipe 200, and the collection box 600 is located at the bottom of the input pipe 200, so that the sand and gravel will enter the collection box 600 under the action of gravity. This avoids the accumulation of sand and gravel at the separation tank 300.

[0087] In some embodiments, the sidewall or bottom of the collection box 600 is provided with an opening, and a cover plate can be detached from the opening of the collection box 600, so that the user can easily clean the sand and gravel inside the collection box 600 by opening the cover plate.

[0088] In some embodiments, the angle between the guiding direction of the blade 700 and the axial direction of the input pipe 200 ranges from 0° to 15°. This angle conforms to actual operating conditions. If the angle is too large, sand and gravel will not only fail to separate, but the airflow intake will also be affected, thus impacting engine operation.

[0089] Furthermore, in normal operating mode, the actuator 130 is controlled to move to ensure that the guide direction of the blade 700 is the same as the axis of the input pipe 200. Upon entering off-road mode, the actuator 130 is controlled to move so that the minimum angle γ between the guide direction of the blade 700 and the axis of the input pipe 200 is between 8° and 15°. That is, 8° ≤ γ ≤ 15°. If γ is less than 8°, the airflow angle may be too small, and the airflow within the input pipe 200 may not be able to rotate. If the angle is too large, there may be excessive obstruction of airflow, affecting engine intake.

[0090] In some embodiments, the vehicle controls the actuator 130 to operate via a controller. When the controller receives a signal to enter off-road mode, it activates the actuator 130, and the actuator 130 outputs an action. When the controller receives a signal to exit off-road mode or enter another mode, it activates the actuator 130, and the actuator 130 output retracts.

[0091] Specifically, after the output of actuator 130 is output, the minimum angle γ between the guiding direction of blade 700 and the axis of input pipe 200 is between 8° and 15°. When the output of actuator 130 is retracted, the guiding direction of blade 700 is the same as the axis of input pipe 200.

[0092] In some embodiments, the output pipe 100 of the air intake sandproof structure is used to connect to the engine's air intake pipe. A threaded section may be provided on the inner wall of the end of the output pipe 100 away from the input pipe 200, for connection to the engine's air intake pipe. Alternatively, the threaded section may also be provided on the outer wall of the output pipe 100.

[0093] In another embodiment, a flange may be provided on the output pipe 100 to connect it to the engine's intake pipe.

[0094] In addition, to further improve the connection strength between the output pipe 100 and the engine intake pipe, bolts or other structures can be provided to strengthen the structure.

[0095] Secondly, this application also provides an engine assembly comprising: an engine, on which an intake sand-proof structure as described above is connected. The intake sand-proof structure, applied to the engine assembly, effectively prevents sand and gravel from entering the engine interior, protecting critical engine components from wear and blockage, and improving engine reliability and service life. Furthermore, the vehicle can adjust the blade angle by 70° as needed to select whether to separate sand and gravel.

[0096] In some embodiments, the engine includes an air intake duct, which is the air intake duct in the air intake sandproof structure described in the first aspect above.

[0097] In addition, the engine itself includes an air intake pipe, which is separately connected to the air intake pipe in the air intake sandproof structure described in the first aspect above.

[0098] Thirdly, this application also provides a vehicle, including a body with an engine assembly as described above mounted on it. This vehicle, employing an engine assembly with an air intake and sand-proof structure, can effectively cope with the impact of harsh environments such as sand and gravel on the engine, improving the vehicle's reliability and durability in harsh road conditions such as deserts and Gobi. The vehicle's engine is better protected, reducing malfunctions and maintenance costs caused by sand and gravel entering the engine, while ensuring the vehicle's power performance and operational stability. This allows the vehicle to maintain good driving performance even in complex environments, expanding the vehicle's scope of use and application scenarios.

[0099] Furthermore, the vehicle body includes an engine compartment, within which is housed the engine assembly as described in the second aspect above.

[0100] It is worth noting that in the air intake sand-proof structure described in the first aspect, if a sand discharge pipe is used, the end of the sand discharge pipe away from the input pipe 200 extends to the outside of the vehicle body.

[0101] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An air intake and sand-proof structure, characterized in that, It includes: Output tube (100); An input tube (200) is provided, one end of which is sleeved on the output tube (100); there is a gap between the outer wall of the output tube (100) and the inner wall of the input tube (200); A separation assembly located within the input pipe (200); the separation assembly includes blades (700) for guiding airflow to rotate about the axis of the input pipe (200); An adjustment component for adjusting the angle of the blade (700).

2. The air intake sand-proof structure according to claim 1, characterized in that, A rotating shaft (800) is provided on the blade (700), and the rotating shaft (800) is rotatably connected to the input pipe (200); The adjusting component is used to rotate the shaft (800).

3. The air intake sand-proof structure according to claim 2, characterized in that, The adjustment assembly includes a linkage gear (110) and a gear ring (120); the gear ring (120) is sleeved on the input tube (200), and one end of the rotating shaft (800) extends outside the input tube (200); The linkage gear (110) is located at one end of the rotating shaft (800) extending outside the input pipe (200); the linkage gear (110) meshes with the gear ring (120).

4. The air intake sand-proof structure according to claim 3, characterized in that, The adjustment assembly also includes an actuator (130) for driving the gear ring (120) to rotate.

5. The air intake sand-proof structure according to claim 1, characterized in that, The input pipe (200) is connected to the outer wall of the output pipe (100) so that a separation groove (300) is formed between the output pipe (100) and the input pipe (200).

6. The air intake sand-proof structure according to claim 5, characterized in that, A collection box (600) is provided on the side of the separation tank (300) facing the ground, and a through hole (400) connects the collection box (600) and the separation tank (300).

7. The air intake sand-proof structure according to claim 6, characterized in that, The bottom of the collection box (600) is provided with a sand discharge hole (601).

8. The air intake sand-proof structure according to claim 1, characterized in that, The angle between the guiding direction of the blade (700) and the axial direction of the input pipe (200) is in the range of 0° to 15°.

9. An engine assembly, characterized in that, It includes: An engine, wherein the engine is connected to an air intake sand-proof structure as described in any one of claims 1 to 8.

10. A vehicle, characterized in that, include: The vehicle body is equipped with the engine assembly as described in claim 9.

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