Flow guide mechanism and automobile

Abstract

The utility model relates to the technical field of traffic transportation, in particular to a flow guide mechanism which comprises a driving device and a flow guide device, the control end of the flow guide device is connected with the free end of the driving device, and the flow guide device is driven by the driving device when the free end of the driving device displaces. The free end of the driving device drives the control end of the flow guiding device to move, and the working state of the flow guiding device is controlled to be switched between the stretching state and the contracting state in the displacement state of the control end. And the movable flow guide plate device is fixedly connected with the flow guide device, the flow guide area of the movable flow guide plate device is maximum when the flow guide device works in an extension state, and the flow guide area of the movable flow guide plate device is minimum when the flow guide device works in a contraction state.

Description

Technical Field

[0001] This utility model relates to the field of transportation technology, specifically to a traffic guiding mechanism and a vehicle. Background Technology

[0002] A semi-trailer is a trailer with its axle positioned behind the vehicle's center of gravity and equipped with a coupling device that transmits horizontal and vertical forces to the tractor. It has no driving force of its own and needs to be connected to the tractor via a towing pin, relying on the tractor's driving force for movement. Compared to full trailers, semi-trailers are mainly used for long-distance freight transport. During operation, semi-trailers need to overcome multiple resistances, including rolling resistance and air resistance. Air resistance is the aerodynamic force acting on a vehicle during travel; its magnitude depends on factors such as the vehicle's speed, shape, and air density. Air resistance increases significantly with the semi-trailer's speed. In recent years, Chinese heavy-duty truck manufacturers have invested heavily in reducing wind resistance, developing low-drag models through CFD analysis and wind tunnel testing. Examples include rounded corners on the bumpers, sides, and roof, a lower front and higher rear design, integrated fairings and roof, side skirts and deflectors, and low-drag rearview mirrors. Currently, heavy-duty trucks maintain a certain clearance between the tractor and trailer to avoid affecting turning. As a vehicle travels, the higher the speed, the faster the airflow in the gap between the trailer and the tractor unit. Air from all directions collides here, disrupting the streamlines, direction, and velocity of the airflow, creating turbulence and generating significant pressure drag and a vacuum zone. This vacuum zone exerts resistance on the cargo box behind, significantly increasing the vehicle's wind resistance. Because existing fairings are fixed, the gaps between different sizes of trailers and cargo boxes cannot be perfectly matched, causing resistance to the cargo box during travel and increasing vehicle power loss. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a flow guiding mechanism aimed at reducing wind resistance and fuel consumption. Specifically:

[0004] A flow guiding mechanism, comprising:

[0005] Drive unit;

[0006] A flow guiding device, wherein the control end of the flow guiding device is connected to the free end of the driving device, and when the free end of the driving device is displaced, the free end of the driving device drives the control end of the flow guiding device to displace as well, thereby controlling the working state of the flow guiding device under the displacement of the control end.

[0007] It can switch between extended and contracted states;

[0008] A movable guide vane device is fixedly connected to the guide device. When the guide device is in the extended state, the guide area of ​​the movable guide vane device is at its maximum, and when the guide device is in the retracted state, the guide area of ​​the movable guide vane device is at its minimum.

[0009] Preferably, in the above-described flow guiding mechanism, the flow guiding device includes:

[0010] A first driving rod, the control end of the first driving rod is connected to the free end of the driving device, and the movable end of the first driving rod forms the control end of the flow guiding device;

[0011] The second driving rod has a first connecting end connected to the second connecting end of the first driving rod; the second connecting end of the second driving rod is connected to the second connecting end of the third driving rod; and the third connecting end of the second driving rod is connected to the first connecting end of the sixth driving rod and the free end of the fifth driving rod.

[0012] The third driving link, wherein the third connecting end of the third driving link is connected to the first connecting end of the seventh driving link and the free end of the eighth driving link;

[0013] The sixth drive link is connected at its second connecting end to the second connecting end of the seventh drive link.

[0014] Preferably, in the above-described flow guiding mechanism, the first driving rod includes a driving fixed rod and a driving movable rod sleeved inside the driving fixed rod, one end of the driving movable rod is connected to the driving device, and the other end of the driving movable rod forms a second connecting end of the first driving rod.

[0015] Preferably, in the above-described guide mechanism, the fixed end of the drive fixing rod is connected to a first predetermined position on the vehicle.

[0016] Preferably, in the above-mentioned flow guiding mechanism, the movable flow guiding plate device includes a first movable plate, a second movable plate, and a third movable plate. The first movable plate and the third movable plate are both disposed on one side of the second movable plate. When the flow guiding area of ​​the movable flow guiding plate device is at its minimum, the first movable plate and the third movable plate completely cover the second movable plate.

[0017] Preferably, the above-described flow guiding mechanism further includes a fourth driving rod, the second connecting end of which is fixedly connected to the second movable plate.

[0018] Preferably, the above-described flow guiding mechanism further includes an eighth driving rod, the fixed end of which is fixedly connected to a predetermined position on the third movable plate that matches the eighth driving rod, and the fixed end of the sixth driving rod is fixedly connected to a predetermined position on the third movable plate that matches the sixth driving rod.

[0019] Preferably, in the above-described flow guiding mechanism, a ninth drive is fixedly mounted on the third movable plate.

[0020] The moving rod is such that the first connecting end of the ninth driving rod is connected to the fixed end of the eighth driving rod; and the second connecting end of the ninth driving rod is connected to the fixed end of the sixth driving rod.

[0021] Preferably, in the above-mentioned flow guiding mechanism, a groove matching the displacement trajectory of the third connecting end of the third driving rod is provided on the second movable plate, a slider is fixedly connected to the third connecting end of the third driving rod, and the slider is embedded in the groove.

[0022] On the other hand, the present invention provides another automobile, which includes a tractor and a trailer, wherein any of the above-mentioned guiding mechanisms are provided between the tractor and the trailer.

[0023] Compared with the prior art, the beneficial effects of this utility model are: the air guiding mechanism switches between the extended state and the retracted state according to the actual application environment to fill the gap between the tractor and the trailer, so that the trailer and the tractor remain as a "relative" whole. The air is isolated by the air guiding device and therefore cannot exert resistance on the trailer, so that turbulence cannot be formed on the side of the semi-trailer transport vehicle, thereby reducing wind resistance and reducing fuel consumption. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0025] Figure 1 is a schematic diagram of the structure of a flow guiding mechanism in an embodiment of this utility model;

[0026] Figure 2 is a schematic diagram of the flow guiding device of a flow guiding mechanism in the contracted state according to an embodiment of the present invention;

[0027] Figure 3 is a schematic diagram of the structure of a flow guiding mechanism in an embodiment of this utility model;

[0028] Figure 4 is a structural schematic diagram of a movable guide plate device of a guide mechanism in an embodiment of this utility model;

[0029] Figure 5 is a structural schematic diagram of a movable guide plate device of a guide mechanism in an embodiment of this utility model;

[0030] Figure 6 is a schematic diagram of the structure of a movable air deflector device in a car in the retracted state according to an embodiment of the present invention.

[0031] Figure 7 illustrates the operation and extension of a movable air deflector device in a car according to an embodiment of this utility model.

[0032] A schematic diagram of the structure under the specified conditions. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0034] As shown in Figure 1, a flow guiding mechanism includes: a driving device; and a flow guiding device 1, wherein the control end of the flow guiding device 1 is connected to the free end of the driving device. When the free end of the driving device is displaced, the free end of the driving device drives the control end of the flow guiding device 1 to be displaced, and the flow guiding device 1 switches its working state between an extended state and a retracted state under the state of displacement of the control end. It should be noted that the flow guiding device 1 can be a single device or a pair (i.e., one flow guiding device 1 is installed at each end of the tractor to realize the switching of the working state of the movable flow guiding plate device 2). In actual application, the setting is determined according to the actual situation, and no specific limitation is made here.

[0035] The movable guide plate device 2 is fixedly connected to the guide device 1. When the guide device 1 is in the extended state, the guide area of ​​the movable guide plate device 2 is the largest, and when the guide device 1 is in the retracted state, the guide area of ​​the movable guide plate device 2 is the smallest.

[0036] In practical applications, the flow guiding mechanism is positioned between the trailer and the tractor unit of a truck. Furthermore, the fixed end of the flow guiding mechanism is fixedly connected to the tractor unit, while the movable end of the flow guiding mechanism can contact the tractor unit. Schematically, as shown in Figure 2, when the flow guiding mechanism is in its retracted state, it does not contact the trailer; as shown in Figure 1, when the flow guiding mechanism is in its extended state, the movable end of the flow guiding mechanism contacts the trailer to fill the gap between the tractor unit and the trailer.

[0037] The fixed side of the movable guide vane device 2 forms the fixed end of the guide mechanism, and the movable side of the movable guide vane device 2 forms the movable end of the guide mechanism. When the movable guide vane device 2 is in its maximum guide area state, it forms a relatively sealed cavity with the tractor and trailer, which controls airflow and reduces resistance. This isolates airflow resistance, preventing it from applying resistance to the trailer and preventing turbulence from forming on the trailer's side, thereby reducing airflow resistance and fuel consumption. When the movable guide vane device 2 is in its minimum guide area state, a clear space is formed between the movable guide vane device 2 and the trailer, facilitating steering operations for the vehicle.

[0038] As a further preferred embodiment, the flow guiding device 1 includes, as shown in Figure 3,

[0039] The first drive lever 11, the control end of the first drive lever 11 is connected to the free end of the drive device.

[0040] The movable end of the first driving rod 11 forms the control end of the flow guiding device 1; further, the first driving rod 11 includes a driving fixed rod and a driving movable rod 111 sleeved inside the driving fixed rod 110, one end of the driving movable rod 111 is connected to the driving device, and the other end of the driving movable rod 111 forms the second connecting end of the first driving rod 11. The movable end of the first driving rod 11 is located in the middle region of the first driving rod 11.

[0041] The second driving rod 12 has its first connecting end connected to the second connecting end of the first driving rod 11; the second connecting end of the second driving rod 12 is connected to the second connecting end of the third driving rod 13; and the third connecting end of the second driving rod 12 is connected to the first connecting end of the sixth driving rod 16 and the free end of the fifth driving rod 15.

[0042] The third driving link 13, the third connecting end of the third driving link 13 is connected to the first connecting end of the seventh driving link 17 and the free end of the eighth driving link 18;

[0043] The sixth drive rod 16, the second connecting end of the sixth drive rod 16 is connected to the second connecting end of the seventh drive rod 17.

[0044] As a further preferred embodiment, the aforementioned guiding mechanism includes a fixed end of a drive fixing rod connected to a first predetermined position on the vehicle. This first predetermined position can be understood as an area on the tractor unit that matches the fixed end of the drive fixing rod 110. It should be noted that if the tractor unit does not have a pre-installed device for matching the fixed end of the drive fixing rod, this fixing device can be added to the tractor unit by welding or other means to match the fixed end of the drive fixing rod 110.

[0045] As a further preferred embodiment, in the above-mentioned flow guiding mechanism, the movable flow guiding plate device 2 includes a first fixed plate 21, a second movable plate 22, and a third movable plate 23. The first fixed plate 21 and the third movable plate 23 are both disposed on one side of the second movable plate. In the state where the flow guiding area of ​​the movable flow guiding plate device 2 is at its minimum, such as... Figure 4 As shown, the first fixed plate 21 and the third movable plate 23 completely cover the second movable plate 22, and the first fixed plate 22 and the third movable plate 23 partially overlap to further reduce the area of ​​the guide plate. The maximum guide area of ​​the movable guide plate device 2 is shown in Figure 5.

[0046] The fixed end of the eighth drive rod 18 is fixedly connected to a predetermined position on the third movable plate 23 that matches the eighth drive rod, and the fixed end of the sixth drive rod 16 is fixedly connected to a predetermined position on the third movable plate 23 that matches the sixth drive rod.

[0047] The first fixed plate 21, the second movable plate 22, and the third movable plate 23 can all be U-shaped, or I-shaped, or L-shaped, depending on the actual situation. No specific restrictions are made here. Schematic, if the first fixed plate 21, the second movable plate 22, and the third movable plate 23 are all U-shaped, then the movable guide plate device 2, in its extended state, forms a U-shaped cavity, which can block wind resistance from the sides and the truck roof. If the first fixed plate 21, the second movable plate 22, and the third movable plate 23 are all I-shaped, then they need to be used in conjunction with a pair of guide devices 1. When the movable guide plate device 2 is extended, driven by a pair of guide devices 1, it forms two parallel baffles, which can block wind resistance from the sides. If the first fixed plate 21, the second movable plate 22, and the third movable plate 23 are all L-shaped, then they need to be used in conjunction with a pair of guide devices 1. When the movable guide plate device 2 is extended, it forms a U-shaped cavity. The shape is either a letter or a three-sided baffle with a gap in the middle of the top.

[0048] Furthermore, the third connecting end of the second driving rod 12 is connected to the free end of the fifth driving rod 15 and pin-connected to the second movable plate 22;

[0049] The fixed end of the eighth drive rod 18 and the third connecting end of the sixth drive rod 16 are both pin-connected to the third movable plate 23.

[0050] It should be noted that the pin connection is a connection made by means of a pin. For example, the fixed end of the eighth drive rod 18 is connected to the third movable plate 23 by a pin.

[0051] The working principle of the aforementioned flow guiding device 1 is as follows: The driving device applies a driving force to the driving movable rod 111, causing the driving movable rod 111 to move. During the movement of the driving movable rod 111, the second driving rod 12 and the fifth driving rod 15 are driven to work. Since the second driving rod 12 and the fifth driving rod 15 are both fixedly connected to the second movable plate 22, the second driving rod 12 and the fifth driving rod 15 drive the second movable plate 22 to move away from the first fixed plate 21. During the movement of the second movable plate 22 away from the first fixed plate 21, the third driving rod 13 is driven to move. At the same time, the second driving rod 12 and the fifth driving rod 15 also drive the sixth driving rod 16 to move. During the movement of the sixth driving rod 16, the seventh driving rod 17 and the eighth driving rod 18 are driven to move. Since the seventh driving rod 17 and the eighth driving rod 18 are both fixedly connected to the third movable plate 23, the movement of the seventh driving rod 17... During the movement of the eighth drive rod 18, the third movable plate 23 is driven to move away from the first fixed plate 21 until the flow guiding area of ​​the movable guide plate device 2 is maximized.

[0052] As a further preferred embodiment, the aforementioned flow guiding mechanism further includes a fourth drive rod 14, the second connecting end of which is fixedly connected to the second movable plate 22. The first connecting end of the fourth drive rod 14 is connected to a tractor or a tractor chute, and to the second movable plate 22.

[0053] During the movement, the fourth drive rod 14 is driven to move, thereby improving the stability of the movement of the second movable plate 22.

[0054] As a further preferred embodiment, in the above-described flow guiding mechanism, a ninth driving rod 19 is fixedly disposed on the third movable plate. The first connecting end of the ninth driving rod 19 is connected to the fixed end of the eighth driving rod 18; the second connecting end of the ninth driving rod 19 is connected to the fixed end of the sixth driving rod 16. By providing the ninth driving rod, the driving force of the third movable plate 23 is applied relatively evenly to the third movable plate 23, thereby enabling the third movable plate 23 to move smoothly.

[0055] Preferably, in the above-described flow guiding mechanism, a groove matching the displacement trajectory of the third connecting end of the third driving rod 13 is provided on the second movable plate 22, and a slider is fixedly connected to the third connecting end of the third driving rod 13, with the slider embedded in the groove. The groove is provided to limit the stability of the vertical movement of the third driving rod 13, the eighth driving rod 18, and the seventh driving rod 17. Example 2:

[0056] On the other hand, this utility model further provides a vehicle, which includes a tractor 201 and a trailer 203, with any of the aforementioned airflow guiding mechanisms 202 provided between the tractor 201 and the trailer 203. The working principle of its airflow guiding device 202 is the same as that provided in Embodiment 1, and will not be repeated here. Figure 6 shows a schematic diagram of the airflow guiding mechanism 202 in its retracted state, and Figure 7 shows a schematic diagram of the airflow guiding mechanism 202 in its extended state.

[0057] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flow guiding mechanism, characterized in that, include: Drive unit; A flow guiding device, wherein the control end of the flow guiding device is connected to the free end of the driving device, and when the free end of the driving device is displaced, the free end of the driving device drives the control end of the flow guiding device to be displaced, and when the control end is displaced, the working state of the flow guiding device is switched between an extended state and a contracted state. A movable guide vane device is fixedly connected to the guide device. When the guide device is in the extended state, the guide area of ​​the movable guide vane device is at its maximum, and when the guide device is in the retracted state, the guide area of ​​the movable guide vane device is at its minimum.

2. The flow guiding mechanism according to claim 1, characterized in that, The flow guiding device includes: A first driving rod, the control end of the first driving rod is connected to the free end of the driving device, and the movable end of the first driving rod forms the control end of the flow guiding device; The second drive rod has a first connecting end connected to the second connecting end of the first drive rod; the second connecting end of the second drive rod is connected to the second connecting end of the third drive rod; and the third connecting end of the second drive rod is connected to the first connecting end of the sixth drive rod and the free end of the fifth drive rod. The third connecting end of the third driving rod is connected to the first connecting end of the seventh driving rod and the free end of the eighth driving rod. The second connecting end of the sixth drive rod is connected to the second connecting end of the seventh drive rod.

3. The flow guiding mechanism according to claim 2, characterized in that, The first driving rod includes a driving fixed rod and a driving movable rod sleeved inside the driving fixed rod. One end of the driving movable rod is connected to the driving device, and the other end of the driving movable rod forms the second connecting end of the first driving rod.

4. A flow guiding mechanism according to claim 3, characterized in that, This includes connecting the fixed end of the drive rod to a first predetermined position on the vehicle.

5. A flow guiding mechanism according to claim 2, characterized in that, The movable guide plate device includes a first movable plate, a second movable plate, and a third movable plate. The first movable plate and the third movable plate are both disposed on one side of the second movable plate. When the guide area of ​​the movable guide plate device is at its minimum, the first movable plate and the third movable plate completely cover the second movable plate.

6. A flow guiding mechanism according to claim 5, characterized in that, It also includes a fourth drive rod, the second connecting end of which is fixedly connected to the second movable plate.

7. A flow guiding mechanism according to claim 5, characterized in that, It also includes an eighth drive rod, the fixed end of which is fixedly connected to a predetermined position on the third movable plate that matches the eighth drive rod, and the fixed end of the sixth drive rod is fixedly connected to a predetermined position on the third movable plate that matches the sixth drive rod.

8. A flow guiding mechanism according to claim 7, characterized in that, A ninth driving rod is fixedly mounted on the third movable plate. The first connecting end of the ninth driving rod is connected to the fixed end of the eighth driving rod. The second connecting end of the ninth driving rod is connected to the fixed end of the sixth driving rod.

9. The flow guiding mechanism according to claim 5, characterized in that, A groove matching the displacement trajectory of the third connecting end of the third driving rod is provided on the second movable plate, and a slider is fixedly connected to the third connecting end of the third driving rod, with the slider embedded in the groove.

10. A car, characterized in that, The vehicle includes a tractor and a trailer, and a flow guiding mechanism as described in any one of claims 1 to 9 is provided between the tractor and the trailer.

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