An aerodynamic fairing for a cargo truck chassis

Abstract

This utility model discloses an aerodynamic fairing for a truck chassis, comprising: a fairing mainly composed of a mounting panel and a guide plate; the surface of the mounting panel having several heat dissipation holes; a heat dissipation channel penetrating the center of the front end of the guide plate; and several ventilation holes at the top and bottom of the guide plate. Movable blades are rotatably mounted within the cavities of the ventilation holes, and a reset mechanism is provided between the movable blades and the ventilation holes. This utility model constructs an efficient heat dissipation path through the corresponding connection between the heat dissipation holes of the mounting panel and the penetrating heat dissipation channel of the guide plate. Simultaneously, the filter plates at both ends of the heat dissipation channel and the filter covers at the top and bottom of the guide plate form a double protection, effectively preventing road mud, stones, and dust from intruding into the heat dissipation structure, avoiding blockage of the heat dissipation holes and channels, and ensuring stable and continuous tire cooling function during long-term use.

Description

Technical Field

[0001] This utility model relates to the field of drag reduction technology for trucks, and in particular to an aerodynamic fairing for a truck chassis. Background Technology

[0002] As a core piece of equipment in the logistics and transportation sector, the chassis area of ​​trucks integrates various components such as tires, drive shafts, and fuel tanks, resulting in a complex and uneven structure. During driving, this area is prone to turbulent vortices in the airflow, becoming one of the main sources of air resistance for the entire vehicle. To reduce chassis wind resistance and improve fuel economy and driving stability, the industry generally installs fairings on the top and sides of the truck cab and on the lower sides of the cargo box. Among them, the fairings on the lower sides of the cargo box directly optimize the chassis airflow field, and their structural rationality plays a decisive role in reducing wind resistance.

[0003] The existing utility model patent with publication number CN214648622U discloses an aluminum alloy wind resistance reduction fairing. It states that "in the application of this utility model's aluminum alloy wind resistance reduction fairing, only one fairing needs to be installed on one side of the truck bed. This aluminum alloy wind resistance reduction fairing can cover the tires under the truck bed, and there are no areas on either side of the tires without fairings, maintaining good sealing and thus preventing the fairing's drag reduction effect from being weakened. This effectively increases vehicle stability during driving, reduces driving resistance, and reduces fuel consumption." While this solves the problem of "poor sealing of the side fairing," it achieves tire cooling through fixed heat dissipation holes with downward-facing openings on the outside. These holes lack protective design, allowing mud, stones, and dust splashed from the road surface to easily enter the holes, causing blockage. After long-term use, the cooling function gradually fails, unable to continuously guarantee the tire's cooling needs. Utility Model Content

[0004] Therefore, it is necessary to provide an aerodynamic fairing for a truck chassis to address the aforementioned technical problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An aerodynamic fairing for a truck chassis, comprising: The air guide is mainly composed of a mounting panel and an air guide plate. The surface of the mounting panel is provided with several heat dissipation holes, and the air guide plate has a heat dissipation channel through the middle of its front end. The guide plate has several ventilation holes at its top and bottom. The inner cavity of each ventilation hole is rotatably equipped with movable blades, and a reset mechanism is provided between the movable blades and the ventilation holes.

[0006] As a preferred embodiment of the aerodynamic fairing for a truck chassis provided by this utility model, the fairing is installed on the lower sides of both sides of the truck body, and the side of the fairing facing the driving direction is arc-shaped, forming a streamlined transition surface covering the airflow injection area.

[0007] In a preferred embodiment of the aerodynamic fairing for a truck chassis provided by this utility model, the positions of the plurality of heat dissipation holes correspond to the heat dissipation channels, and their inner cavities are connected.

[0008] As a preferred embodiment of the aerodynamic fairing for a truck chassis provided by this utility model, the reset mechanism includes a fixed rod and a side groove. The fixed rod rotatably inserts into the bottom of the movable blade, and the side groove is opened on one side of the inner wall of the ventilation hole.

[0009] In a preferred embodiment of the aerodynamic fairing for a truck chassis provided by this utility model, one end of the fixing rod is fixedly connected to the other side of the inner wall of the ventilation hole, and the other end of the fixing rod is fixedly connected to the inner wall of the side groove.

[0010] In a preferred embodiment of the aerodynamic fairing for a truck chassis provided by this utility model, a reset component is sleeved on the portion of the fixed rod located between the side groove and the movable blade. The two ends of the reset component are respectively connected to the inner wall of the side groove and the movable blade. The reset component can specifically be a torsion spring.

[0011] In a preferred embodiment of the aerodynamic fairing for a truck chassis provided by this utility model, filter plates are embedded at both ends of the heat dissipation channel cavity, and filter covers are fixedly connected to the top and bottom of the fairing plate.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The aerodynamic fairing for a truck chassis provided by this utility model constructs an efficient heat dissipation path by correspondingly connecting the heat dissipation holes of the mounting panel with the through-type heat dissipation channel of the fairing plate. At the same time, the filter plates at both ends of the heat dissipation channel and the filter covers at the top and bottom of the fairing plate form a double protection, which can effectively block the intrusion of road mud, stones and dust into the heat dissipation structure, avoid the blockage of heat dissipation holes and heat dissipation channels, ensure the stable and continuous tire heat dissipation function during long-term use, and greatly reduce the safety risks of tire aging or blowout due to high temperature.

[0013] 2. This utility model provides an aerodynamic fairing for a truck chassis. Movable blades within the ventilation holes at the top and bottom of the fairing cooperate with a reset mechanism containing torsion springs to achieve adaptive adjustment of heat dissipation and ventilation. At low speeds or idling, the torsion spring force keeps the blades vertical and the ventilation holes fully open. Natural convection, with cold air entering from the bottom and hot air exiting from the top, enhances heat dissipation and compensates for insufficient airflow at low speeds. At high speeds, the airflow thrust overcomes the torsion spring force, causing the blades to tilt and partially block the ventilation holes, reducing airflow leakage and ensuring the fairing's sealing performance, thus avoiding additional wind resistance. This design perfectly balances the needs for efficient heat dissipation at low speeds with low wind resistance at high speeds. The arc-shaped design of the deflector on the driver's side forms a streamlined transition surface covering the airflow injection area, guiding the frontal airflow smoothly and reducing airflow impact and separation. This further optimizes the chassis airflow field. Combined with the overall structure's complete coverage of the lower sides of the cargo box, it improves wind resistance while maintaining good sealing. Ultimately, this helps trucks reduce fuel consumption and improve driving stability, while also reducing maintenance costs caused by clogged cooling components. It has outstanding practical value and promising prospects for widespread adoption. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A schematic diagram of the overall structure of this utility model; Figure 2 This utility model provides a disassembled structural diagram; Figure 3 Provided for this utility model Figure 2 Rear view structural diagram; Figure 4 A partial structural schematic diagram is provided for this utility model.

[0016] The markings in the diagram are explained as follows: 1. Mounting panel; 2. Guide plate; 3. Heat dissipation holes; 4. Heat dissipation channel; 5. Ventilation hole; 6. Movable blades; 7. Reset mechanism; 71. Fixing rod; 72. Side groove; 73. Reset component; 8. Filter plate; 9. Filter cover. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention. Example

[0018] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 An aerodynamic fairing for a truck chassis includes a fairing installed on the lower sides of the truck body. The fairing 2 has an arc shape on the side facing the driving direction, forming a streamlined transition surface covering the airflow injection area. Its arc is designed according to aerodynamics. The fairing is mainly composed of a mounting panel 1 and a fairing 2. The mounting panel 1 is used to fix and connect to the chassis structure on the lower sides of the truck body. The arc transition surface of the fairing 2 can guide the airflow in front to glide smoothly. The surface of the mounting panel 1 is provided with several heat dissipation holes 3, which guide the heat transferred from the tire to the mounting panel 1 into the heat dissipation channel 4, avoiding heat retention between the mounting panel 1 and the tire. At the same time, because it is connected to the heat dissipation channel 4, the heat can be accelerated to be discharged by means of the airflow in the heat dissipation channel 4. The front end of the fairing 2 has a through heat dissipation channel 4. When driving, some external airflow can flow through the inside of the channel, quickly carrying away the heat from the tire introduced by the heat dissipation holes 3, improving the heat dissipation efficiency. The positions of the several heat dissipation holes 3 correspond to the heat dissipation channel 4, and their inner cavities are connected. The top and bottom of the deflector 2 are provided with several ventilation holes 5 to provide installation chambers for the movable blades 6. At low speeds, they are connected to the outside to form a natural convection channel. At high speeds, the ventilation area is adjusted by the blades blocking the airflow. The movable blades 6 are rotatably installed in the inner cavity of the ventilation holes 5. By cooperating with the reset mechanism 7, the blades adjust their angle according to the vehicle speed. This is the core actuator for achieving adaptive adjustment of the ventilation area. The reset mechanism 7 is provided between the movable blades 6 and the ventilation holes 5, and its function is to act as the rotation shaft of the movable blades 6.

[0019] Preferably, the reset mechanism 7 includes a fixed rod 71 and a side groove 72. The fixed rod 71 rotatably inserts into the bottom of the movable blade 6. The side groove 72 is opened on one side of the inner wall of the ventilation hole 5. One end of the fixed rod 71 is fixedly connected to the other side of the inner wall of the ventilation hole 5, and the other end of the fixed rod 71 is fixedly connected to the inner wall of the side groove 72. The portion of the fixed rod 71 placed between the side groove 72 and the movable blade 6 is fitted with a reset component 73. The two ends of the reset component 73 are respectively connected to the inner wall of the side groove 72 and the movable blade 6. The reset component 73 can be a torsion spring to provide reset elasticity.

[0020] Preferably, filter plates 8 are embedded at both ends of the heat dissipation channel 4 to provide a barrier to intercept impurities in the heat dissipation channel 4. Filter covers 9 are fixedly connected to the top and bottom of the guide plate 2 to prevent larger particles of stone or blocky impurities from hitting the movable blades 6 inside the ventilation hole 5 and to avoid damage to the blades.

[0021] The usage process of the aerodynamic fairing for a cargo truck chassis provided by this utility model is as follows: First, the fairing is fixed to the lower sides of both sides of the cargo truck body using the mounting panel 1, ensuring complete coverage of the tires under the cargo body. During driving, the arc-shaped streamlined transition surface of the fairing 2 on the driving side guides the airflow to glide smoothly, avoiding airflow impact. At the same time, the heat generated by tire friction is transferred to the mounting panel 1 and guided through the heat dissipation holes 3 on the surface of the mounting panel 1, which are connected to the heat dissipation channel 4, to the heat dissipation channel 4, which is opened in the middle of the front end of the fairing 2. When the external airflow flows through the heat dissipation channel 4, it can quickly carry away the heat, achieving basic heat dissipation. When the vehicle is at low speed or idling, and the airflow is insufficient, the reset component 73, which is sleeved on the fixed rod 71 in the reset mechanism 7, will use its own elasticity to reset. The movable blade 6 is pushed to maintain a vertical position within the ventilation hole 5, fully opening the ventilation holes 5 at the top and bottom of the guide plate 2. This forms a natural convection channel where cold air enters at the bottom and hot air exits at the top, supplementing the insufficient heat dissipation of the heat dissipation channel 4. When the vehicle is traveling at high speed, the airflow thrust overcomes the elasticity of the reset component 73, causing the movable blade 6 to rotate around the fixed rod 71 to an inclined state, partially blocking the ventilation hole 5 to reduce airflow leakage from the opening, ensuring the overall sealing of the guide plate and avoiding additional wind resistance. At the same time, the filter plates 8 embedded at both ends of the heat dissipation channel 4 can intercept impurities such as mud, water, and dust that enter the channel. The filter covers 9 fixed at the top and bottom of the guide plate 2 can prevent larger particles of stone from hitting the movable blade 6 inside the ventilation hole 5, ensuring the long-term stable operation of each component, and ultimately achieving the coordinated operation of aerodynamic wind resistance reduction and efficient heat dissipation under all working conditions.

[0022] 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, an electrical connection, or a connection that allows communication between them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. An aerodynamic fairing for a cargo truck chassis, characterized in that, It includes: The air guide is mainly composed of a mounting panel (1) and an air guide plate (2). The surface of the mounting panel (1) is provided with several heat dissipation holes (3), and the air guide plate (2) is provided with a heat dissipation channel (4) through the middle of the front end. The guide plate (2) has several ventilation holes (5) at its top and bottom. The ventilation holes (5) are rotatably provided with movable blades (6). A reset mechanism (7) is provided between the movable blades (6) and the ventilation holes (5).

2. The aerodynamic fairing for a truck chassis according to claim 1, characterized in that, The air deflector is installed on both sides of the cargo compartment of the truck. The air deflector (2) is arc-shaped on the side facing the driving direction, forming a streamlined transition surface covering the airflow injection area.

3. The aerodynamic fairing for a truck chassis according to claim 1, characterized in that, The positions of several heat dissipation holes (3) correspond to the heat dissipation channels (4), and their inner cavities are connected.

4. The aerodynamic fairing for a cargo truck chassis according to claim 1, characterized in that, The reset mechanism (7) includes a fixed rod (71) and a side groove (72). The fixed rod (71) rotates through the bottom of the movable blade (6), and the side groove (72) is opened on one side of the inner wall of the ventilation hole (5).

5. The aerodynamic fairing for a truck chassis according to claim 4, characterized in that, One end of the fixing rod (71) is fixedly connected to the other side of the inner wall of the ventilation hole (5), and the other end of the fixing rod (71) is fixedly connected to the inner wall of the side groove (72).

6. The aerodynamic fairing for a truck chassis according to claim 4, characterized in that, The fixed rod (71) is fitted with a reset component (73) between the side groove (72) and the movable blade (6). The two ends of the reset component (73) are connected to the inner wall of the side groove (72) and the movable blade (6) respectively. The reset component (73) can be a torsion spring.

7. The aerodynamic fairing for a truck chassis according to claim 1, characterized in that, Filter plates (8) are embedded at both ends of the inner cavity of the heat dissipation channel (4), and filter covers (9) are fixedly connected to the top and bottom of the guide plate (2).

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