Aerodynamic device based on semi-trailer transportation vehicle and automobile

Abstract

The invention relates to the technical field of transportation, in particular to an aerodynamic device based on a semi-trailer transportation vehicle and an automobile, which comprises a tractor and a trailer connected with the tractor, and is characterized by comprising a flow guide device movably arranged between the tractor and the trailer, and the fixed end of the flow guide device is fixedly connected with the tractor.

Description

Technical Field

[0001] The present invention relates to the technical field of transportation, and in particular to an aerodynamic device based on a semi-trailer transport vehicle and a car. Background Art

[0002] With the development of commodity trading, the utilization rate of transportation tools is increasing day by day. The improvement of power and speed of transportation tools, as well as the diversification of transportation methods, have played a positive role in promoting commodity circulation and economic development. Transportation tools need to overcome multiple resistances including rolling resistance and air resistance during driving. Air resistance is the air force exerted on the car during driving. The magnitude of this resistance depends on factors such as the speed, shape and air density of the car. As the speed of the car increases, the air resistance will also increase significantly. In recent years, Chinese heavy truck companies have invested a lot of energy in reducing wind resistance, and developed low wind resistance models through CFD analysis and wind tunnel tests; for example, the bumper, both sides of the body, and the roof adopt large rounded corners, and adopt the front low and rear high, integrated design of the deflector and the roof, side deflectors and side skirts, low wind resistance rearview mirrors and other solutions. In order not to affect the turning of the vehicle, the existing heavy trucks will retain a certain gap between the tractor and the trailer. When the vehicle is driving, the faster the speed, the faster the air flow in the gap between the trailer and the front of the vehicle. Air from all directions collides here, breaking the streamline, direction and velocity of the airflow, thus forming turbulence, generating a large amount of pressure difference resistance and vacuum area, and this vacuum area will generate resistance to the rear cargo box, thus significantly increasing the wind resistance of the vehicle. Since the existing deflectors are all fixed, the gap between trailers and cargo boxes of different specifications cannot be fully adapted, resulting in resistance to the cargo box during driving, which in turn increases the power loss of the vehicle. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides an aerodynamic device based on a semi-trailer transport vehicle. Specifically:

[0004] An aerodynamic device based on a semi-trailer transport vehicle comprises a tractor and a trailer connected to the tractor, wherein the device comprises a flow guide device which can be movably arranged between the tractor and the trailer, and the fixed end of the flow guide device is fixedly connected to the tractor.

[0005] Preferably, in the above-mentioned aerodynamic device based on a semi-trailer transport vehicle, the deflector device includes a first elastic deflector and a second elastic deflector, the first elastic deflector and the second elastic deflector are arc-shaped, the first elastic deflector is fixedly connected to one side of the tractor, and the second elastic deflector is fixedly connected to the other side of the tractor, the protruding direction of the first elastic deflector is toward the outside of the tractor, and the protruding direction of the second elastic deflector is toward the outside of the tractor.

[0006] Preferably, the above-mentioned aerodynamic device based on a semi-trailer transport vehicle, wherein the air guide device includes a pair of drive brackets arranged opposite to each other and a air guide cover matching the drive bracket, and when the first drive instruction is obtained, the drive bracket works in an extended state, and when the second drive instruction is obtained, the drive bracket works in a contracted state; when the drive bracket works in the extended state.

[0007] Preferably, the above-mentioned aerodynamic device based on a semi-trailer transport vehicle, wherein the driving bracket includes a first bracket and a second bracket, the first bracket is connected to a driving connecting rod through a first driving device, the second bracket is connected to a transmission connecting rod, and the driving connecting rod is connected to the transmission connecting rod through a connector, wherein the first driving device is used to receive the first driving instruction or the second driving instruction, and execute an action matching the first driving instruction or the second driving instruction.

[0008] Preferably, the above-mentioned aerodynamic device based on a semi-trailer transport vehicle, wherein the first driving device includes a motor assembly, a transmission shaft, and a gear box with a helical gear inside, and the proximal end of the driving connecting rod is provided with a follower tooth matching the helical gear, or, the first driving device includes a motor assembly, a worm, and a turbine matching the worm, one end of the worm is connected to the motor assembly, the worm and the turbine are meshed and connected to each other, and the proximal end of the driving connecting rod is connected to the turbine via a pin shaft.

[0009] Preferably, the above-mentioned aerodynamic device based on a semi-trailer transport vehicle, wherein a driving link gear is provided at the distal end of the driving link rod, and a transmission link gear is provided at the distal end of the transmission link rod, the driving link gear and the transmission link gear are both connected to the connector, and the driving link gear and the transmission link gear are meshed with each other.

[0010] Preferably, the above-mentioned aerodynamic device based on a semi-trailer transport vehicle, wherein, further includes a fairing drum, wherein the fairing drum is arranged adjacent to the first bracket, wherein the fairing drum includes a guide shaft, a bracket, and a rotating shaft of a built-in rotating motor assembly, wherein the rotating shaft is fixedly connected to a fixed end of the fairing, and the movable end of the fairing is fixedly connected to a second bracket around the guide shaft.

[0011] Preferably, the above-mentioned aerodynamic device based on a semi-trailer transport vehicle, wherein the driving bracket includes a third bracket and a fourth bracket, and a third connecting rod, a fourth connecting rod, a fifth connecting rod and a sixth connecting rod, a seventh connecting rod and an eighth connecting rod can be movably connected between the third bracket and the fourth bracket, wherein the third connecting rod and the fourth connecting rod cross each other, and the third connecting rod and the sixth connecting rod are parallel, the movable end of the fourth connecting rod is connected to the movable end of the sixth connecting rod, the fifth connecting rod and the sixth connecting rod cross each other, and the fifth connecting rod and the fourth connecting rod are parallel, The movable end of the fifth connecting rod is connected to the movable end of the third connecting rod, the fixed end of the third connecting rod is hinged to one end of the third bracket, the fixed end of the fourth connecting rod is hinged to the other end of the third bracket, the fixed end of the fifth connecting rod is hinged to one end of the fourth bracket, the fixed end of the sixth connecting rod is hinged to the other end of the fourth bracket, the seventh connecting rod is connected to the middle end of the third connecting rod and the movable end of the fourth connecting rod, the eighth connecting rod is connected to the middle end of the sixth connecting rod and the movable end of the fifth connecting rod, and a third driving device for driving the third connecting rod is installed on the third bracket.

[0012] Preferably, the above-mentioned aerodynamic device based on a semi-trailer transport vehicle, wherein the driving bracket includes a fifth bracket and a sixth bracket, and a ninth connecting rod, a tenth connecting rod, an eleventh connecting rod and a twelfth connecting rod can be movably connected between the fifth bracket and the sixth bracket, the ninth connecting rod is parallel to the eleventh connecting rod, and one end of the ninth connecting rod is connected to one end of the twelfth connecting rod, the tenth connecting rod is parallel to the twelfth connecting rod, and one end of the tenth connecting rod is connected to one end of the eleventh connecting rod, wherein the other ends of the ninth connecting rod and the twelfth connecting rod are each provided with a connecting protrusion, the connecting protrusion of the ninth connecting rod can be movably snapped into the first sliding groove of the fifth bracket, the other end of the tenth connecting rod can be movably connected to the fifth bracket, the connecting protrusion of the twelfth connecting rod can be movably snapped into the first sliding groove of the sixth bracket, and the other end of the eleventh connecting rod can be movably connected to the sixth bracket.

[0013] Preferably, the above-mentioned aerodynamic device based on a semi-trailer transport vehicle, wherein the driving bracket includes a seventh bracket, an eighth bracket, a fixed rod fixedly connected to the seventh bracket, a screw driving rod matched with the fixed rod, a first cable driven rod and a second cable driven rod and a cable, a screw assembly is arranged on the fixed rod, the screw assembly is meshingly connected to the screw driving rod, a screw telescopic rod assembly is arranged at one end of the screw driving rod and the screw telescopic rod assembly is embedded in a lateral slide groove of the fixed rod, and a first pulley and a second pulley are respectively arranged at both ends of the internal slide groove of the screw driving rod, A first cable telescopic assembly is provided at one end of the first cable follower rod, and the first cable telescopic assembly is embedded in the lateral slide groove of the screw drive rod, a third pulley and a fourth pulley are respectively provided at both ends of the internal cavity of the first cable follower rod, a second cable telescopic assembly is provided at one end of the second cable follower rod, and the second cable telescopic assembly is embedded in the lateral slide groove of the first cable follower rod, the other end of the second cable follower rod is connected to the eighth bracket, one end of the cable is connected to the seventh bracket, and is fixedly connected to the eighth bracket in an S-shaped winding manner along the first pulley, the second pulley, the third pulley and the fourth pulley.

[0014] On the other hand, the present invention further provides a vehicle comprising the aerodynamic device of any of the semi-trailer transport vehicles described above.

[0015] Compared with the prior art, the beneficial effect of the present invention is that when the semi-trailer transport vehicle is traveling at high speed, the gap between the tractor and the trailer is filled by the guide device. At this time, the trailer and the tractor maintain a "relative" integrity, and the air is isolated by the guide device and 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the structure of an aerodynamic device based on a semi-trailer transport vehicle provided in an embodiment of the present invention.

[0018] Figure 2 A schematic diagram of an explosion connection of an aerodynamic device based on a semi-trailer transport vehicle provided in an embodiment of the present invention.

[0019] Figure 3 A schematic exploded view of the structure of an aerodynamic device based on a semi-trailer transport vehicle provided in an embodiment of the present invention.

[0020] Figure 4 A schematic diagram of the extended state of a driving bracket in an aerodynamic device based on a semi-trailer transport vehicle provided in an embodiment of the present invention.

[0021] Figure 5 A schematic diagram of a retracted state of a driving bracket in an aerodynamic device based on a semi-trailer transport vehicle provided in an embodiment of the present invention.

[0022] Figure 6 An exploded structural diagram of a driving bracket in an aerodynamic device based on a semi-trailer transport vehicle provided in an embodiment of the present invention.

[0023] Figure 7 A schematic structural diagram of a first driving device in an aerodynamic device based on a semi-trailer transport vehicle provided in an embodiment of the present invention.

[0024] Figure 8 A cross-sectional view of a first driving device in an aerodynamic device based on a semi-trailer transport vehicle provided in an embodiment of the present invention.

[0025] Fig. 9 A schematic structural diagram of a first driving device in an aerodynamic device based on a semi-trailer transport vehicle provided in an embodiment of the present invention.

[0026] Fig.10 A cross-sectional view of a first driving device in an aerodynamic device based on a semi-trailer transport vehicle provided in an embodiment of the present invention.

[0027] Fig.11 A schematic diagram of a drum in an aerodynamic device based on a semi-trailer transport vehicle provided in an embodiment of the present invention.

[0028] Fig.12 A schematic exploded view of the structure of an aerodynamic device based on a semi-trailer transport vehicle provided in an embodiment of the present invention.

[0029] Fig.13 A schematic diagram of the extended state of a driving bracket in an aerodynamic device based on a semi-trailer transport vehicle provided in an embodiment of the present invention.

[0030] Fig.14 A schematic diagram of a retracted state of a driving bracket in an aerodynamic device based on a semi-trailer transport vehicle provided in an embodiment of the present invention.

[0031] Fig.15 A schematic exploded view of the structure of an aerodynamic device based on a semi-trailer transport vehicle provided in an embodiment of the present invention.

[0032] Fig.16 A schematic diagram of the extended state of a driving bracket in an aerodynamic device based on a semi-trailer transport vehicle provided in an embodiment of the present invention.

[0033] Fig.17 A schematic diagram of a retracted state of a driving bracket in an aerodynamic device based on a semi-trailer transport vehicle provided in an embodiment of the present invention.

[0034] Fig.18 A schematic exploded view of the structure of an aerodynamic device based on a semi-trailer transport vehicle provided in an embodiment of the present invention.

[0035] Fig.19 A schematic diagram of the extended state of a driving bracket in an aerodynamic device based on a semi-trailer transport vehicle provided in an embodiment of the present invention.

[0036] Fig. 20 A schematic diagram of a retracted state of a driving bracket in an aerodynamic device based on a semi-trailer transport vehicle provided in an embodiment of the present invention. Specific implementation plan

[0037] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0038] An aerodynamic device based on a semi-trailer transport vehicle comprises a tractor and a trailer connected to the tractor, wherein the device comprises a flow guide device which can be movably arranged between the tractor and the trailer, and the fixed end of the flow guide device is fixedly connected to the tractor.

[0039] Furthermore, when the speed of the tractor and the trailer is not greater than a predetermined threshold, the deflector operates in a retracted state. At this time, the tractor and the trailer are independent of each other, and their air resistance is relatively small when the driving speed is lower than the predetermined threshold. Therefore, the deflector operates in a retracted state, which is convenient for the vehicle to perform operations in a low-speed state such as turning and reversing. When the speed of the tractor and the trailer is greater than the predetermined threshold, the deflector operates in an extended state so that a relatively upward-opening space is formed between the tractor, the deflector and the trailer, and the gap between the tractor and the trailer is filled by the deflector in the extended state.

[0040] When a semi-trailer transport vehicle is traveling at high speed, the gap between the tractor and the trailer is filled. At this time, the trailer and the tractor maintain a "relative" integrity. The air is isolated by the guide device and cannot exert resistance on the trailer, so that turbulence cannot form on the side of the semi-trailer transport vehicle, thereby reducing wind resistance and fuel consumption.

[0041] It should be noted that the predetermined threshold can be 20km / h, 15km / h, 30km / h, etc. There is no specific limitation here. In actual application, the operator or driver can set it according to the actual situation, and it is necessary to ensure that the set value meets the relevant traffic regulations.

[0042] like Figure 1 , 2 As shown, an aerodynamic device based on a semi-trailer transport vehicle includes a tractor and a trailer connected to the tractor, wherein the deflector includes a first elastic deflector 11 and a second elastic deflector 12, the first elastic deflector 11 and the second elastic deflector 12 are arc-shaped, the first elastic deflector 11 is fixedly connected to one side of the frame 10 of the tractor, and the second elastic deflector 12 is fixedly connected to the other side of the frame 10 of the tractor, the protrusion direction of the first elastic deflector 11 faces the outside of the tractor, and the protrusion direction of the second elastic deflector 12 faces the outside of the tractor. That is, the first elastic deflector 11 and the second elastic deflector 12 form a cavity (also understood as a spoiler) for accommodating wind resistance in combination with the end of the tractor. During low-speed driving, the wind resistance is relatively small and can be ignored. During low-speed driving, the influence of the first elastic deflector 11 and the second elastic deflector 12 on the vehicle turning, reversing and other operations is mainly considered. On the one hand, since the first elastic deflector 11 and the second elastic deflector 12 are both formed of elastic materials, they have certain elasticity, and the first elastic deflector 11 and the second elastic deflector 12 are both facing inward near the trailer, during the vehicle reversing or turning, the tractor drives the first elastic deflector 11 or the second elastic deflector 12 to move, which will not affect the movement of the vehicle. On the other hand, even if the vehicle makes a U-turn, the trailer can squeeze and deform the elastic deflector, and the elastic deflector can return to its original state after the U-turn is completed. During high-speed driving (greater than 30km / h), part of the wind resistance generated by the gap between the trailer and the tractor is confined between the first elastic deflector 11 and the second elastic deflector 12, thereby reducing the influence of wind resistance on the trailer.

[0043] Furthermore, it also includes a third deflector 13 disposed adjacent to the first elastic deflector 11 and a fourth deflector 14 disposed adjacent to the second elastic deflector 12, and the third deflector 13 and the fourth deflector 14 are respectively fixedly connected to the ends of the tractor. The third deflector 13 and the fourth deflector 14 both extend toward the outside of the vehicle body, and the longitudinal distance of the third deflector 13 and the fourth deflector 14 extending shall not exceed 1 / 3 of the rearview mirror of the tractor. By fixing the third deflector 13 and the fourth deflector 14 to fill the gap between the first elastic deflector and the vehicle frame, during the high-speed operation of the vehicle, the wind resistance of the tractor is guided to the two sides of the trailer by the third deflector 13 and the fourth deflector 14 to reduce its impact on the trailer.

[0044] Furthermore, the third guide plate 13 and the fourth guide plate 14 are formed by split guide plates.

[0045] Embodiment 2

[0046] like Figure 3 , 4 As shown, as a further preferred embodiment, the above-mentioned aerodynamic device based on a semi-trailer transport vehicle, wherein the deflection device comprises a pair of mutually opposed drive brackets 100 (the drive bracket 100 comprises a first bracket 110 and a second bracket 120) and a lateral deflection cover 130 matched with the drive bracket 100, and the drive bracket 100 works in a stretched state (such as Figure 5 As shown), when the driving bracket 100 is operated in a retracted state under the action of the second driving instruction; when the driving bracket 100 is operated in an extended state, the driving bracket 100 and the lateral air guide cover 130 form a closed cavity between the tractor and the trailer. When the driving bracket 100 is operated in a retracted state, the first bracket 110 and the second bracket 120 are arranged adjacent to each other, that is, the distance between the first bracket 110 and the second bracket 120 is small. When the driving bracket 100 is operated in an extended state, the distance between the first bracket 110 and the second bracket 120 is relatively increased, and the distance matches the distance between the tractor and the trailer. For example, when the distance between the tractor and the trailer is 1 meter, the distance between the first bracket 110 and the second bracket 120 in the extended state is close to 1 meter.

[0047] The first driving instruction and the second driving instruction are both formed by vehicle speed collection data, for example, the first driving instruction is formed when the vehicle speed is not less than a predetermined threshold, and the second driving instruction is formed when the vehicle speed is less than the predetermined threshold. The method for setting the predetermined threshold is the same as that in the first embodiment, and is not described in detail here. In addition, the vehicle speed collection method can be obtained by an independent collection device, or can be formed by reading or calling the detection data of the speed detection device inside the tractor. The collection method is not limited here, and the purpose is to obtain the vehicle speed value.

[0048] like Figure 6 As shown, schematically, as a further preferred embodiment, the above-mentioned aerodynamic device based on a semi-trailer transport vehicle, wherein the first bracket 110 is connected to the drive link 112 through a first drive device 111, the second bracket 120 is connected to the transmission link 121, and the drive link 112 is connected to the transmission link 121 through a connector 113, wherein the first drive device 111 is used to receive the first drive instruction or the second drive instruction, and execute an action matching the first drive instruction or the second drive instruction.

[0049] Under the action of the first driving instruction, the driving bracket 100 works in the stretched state. Taking the driving connecting rod 112 and the transmission connecting rod 121 at the upper ends of the first bracket 110 and the second bracket 120 as an example, its specific working process is that when the first driving instruction is received, the first driving device 111 starts to work, and the first driving device 111 drives the driving connecting rod 112 to switch from a vertical state to a horizontal state during the operation, that is, the first driving device 111 drives the distal end of the driving connecting rod 112 (the proximal end of the driving connecting rod 112 is the end connected to the first driving device 111) to slowly lift up, and the driving connecting rod 112 is connected to the first driving device 111. During the lifting of the rod 112, the connector 113 is driven to move in the vertical direction (upward movement), and at the same time, the connector 113 drives the distal end of the transmission link 121 to move in the vertical direction (upward movement). During the vertical movement of the transmission link 121, its horizontal length increases, that is, the transmission link 121 drives the second bracket 120 away from the first bracket 110 until the driving link 112, the connector 113, and the transmission link 121 are on the same horizontal line. At this time, the distance between the first bracket 110 and the second bracket 120 is the largest, and the driving bracket 100 works in a fully stretched state.

[0050] The driving bracket 100 works in a retracted state under the action of the second driving instruction. The specific working process is that, in the state of receiving the second driving instruction, the first driving device 111 starts to work, and the first driving device 111 drives the driving connecting rod 112 to switch from a horizontal state to a vertical state during the working process, that is, the first driving device 111 drives the distal end of the driving connecting rod 112 (the proximal end of the driving connecting rod 112 is the end connected to the first driving device 111) to slowly descend, and drives the driving connecting rod 112 to descend during the descent of the driving connecting rod 112. The connector 113 moves in the vertical direction (downward movement), and at the same time, the connector 113 drives the far end of the transmission link 121 to move in the vertical direction (downward movement). During the movement of the transmission link 121 in the vertical direction, its horizontal length decreases, that is, the transmission link 121 drives the second bracket 120 to approach the first bracket 110, until the driving link 112 and the driving link 121 are both in a vertical state. At this time, the distance between the first bracket 110 and the second bracket 120 is the smallest, and the driving bracket 100 works in a fully retracted state.

[0051] like Figure 7 , 8 As shown, as a further preferred embodiment, the above-mentioned aerodynamic device based on a semi-trailer transport vehicle, the first driving device 111 includes a motor assembly 1111, a transmission shaft 1112, and a gear box 1113 with a bevel gear 1114 inside, the proximal end of the driving connecting rod 112 is provided with a follower tooth matching the bevel gear 1114, the distal end of the driving connecting rod 112 is provided with a driving link gear 1121, the distal end of the transmission connecting rod 121 is provided with a transmission link gear, the driving link gear and the transmission link gear are both connected to the connector 113, and the driving link gear and the transmission link gear are meshed with each other. The motor assembly 1111 drives the transmission shaft 1112 to work, and the transmission shaft 1112 is meshed with the bevel gear 1114. The transmission shaft 1112 drives the bevel gear 1114 to move during rotation, and the bevel gear 1114 moves to drive the follower teeth on the drive link 112 to move, that is, the drive link 112 is driven to rotate along the gear axis. During the movement of the drive link 112, the drive link gear at the far end of the drive link 112 drives the transmission link gear to move, that is, the drive link 112 drives the driven link to move, thereby realizing the lifting or lowering of the transmission link 121 and the far end of the drive link 112.

[0052] Or, if Fig. 9 , 10As shown, a gear commutation method such as using a worm gear for transmission can also be adopted. Specifically, the first driving device includes a motor assembly 1111, a worm 1116, and a turbine 1117 matched with the worm 1116. One end of the worm 1117 is connected to the motor assembly 1111. The worm 1116 and the turbine 1117 are meshed and connected with each other, and the proximal end of the driving connecting rod 112 is connected to the turbine 1117 through a pin shaft 1118. The motor assembly 1111 drives the worm 1116 works, the worm gear 1116 and the turbine 1117 are meshed with each other, and the worm gear 1116 drives the turbine 1117 to move during its rotation. The turbine 1117 is fixed to the driving link 112 by a pin shaft to drive the proximal end of the driving link 112 to move. At this time, the driving link gear at the far end of the driving link 112 drives the transmission link gear to move, that is, the driving link 112 drives the driven link to move, thereby realizing the lifting or lowering of the far ends of the driving link 121 and the driving link 112.

[0053] As a further preferred embodiment, the above-mentioned aerodynamic device based on a semi-trailer transport vehicle further includes a second drive device that is the same as the first drive rod device, and the second drive device is arranged between the second bracket 120 and the transmission connecting rod 121 bracket. The working principle of the second drive device is the same as the working principle of the first drive device 111. The movement directions of the first drive device 111 and the second drive device during the driving process are mirror images, and are not described here. The purpose is to realize the approach or distance between the first bracket 110 and the second bracket 120 in linkage, while improving the stability during the movement.

[0054] It should be noted that a corresponding first driving device 111, a driving connecting rod 112, and a connector 113 can be provided at the lower end of the first bracket 110, and a corresponding driving connecting rod 112 can be provided at the lower end of the second bracket 120. Furthermore, a second driving device is provided at the lower end of the second bracket 120. Those skilled in the art can make corresponding adjustments according to actual needs to realize the extension and retraction of the driving bracket 100. Its working principle is the same as that of the above-mentioned embodiment, which will not be repeated here.

[0055] As a further preferred embodiment, a first driven rod 114 and a second driven rod 115 are further included, wherein the first driven rod 114 is movably connected between the first bracket 110 and the linker 113 and is parallel to the driving connecting rod 112, and the second driven rod 115 is movably connected between the second bracket 120 and the connector and is parallel to the driving connecting rod 121. The first driven rod 114 and the second driven rod 115 can make the movement process of the driving bracket 100 more stable.

[0056] like Fig.11As shown, as a further preferred embodiment, the above-mentioned aerodynamic device based on a semi-trailer transport vehicle also includes a side air guide hood 130 reel 140, and the side air guide hood 130 reel is arranged adjacent to the first bracket 110, and the side air guide hood 130 reel includes a guide shaft 141, a guide bracket 142, and a rotating shaft 143 of a built-in rotating motor assembly 1111, the rotating shaft 143 is fixedly connected to the fixed end of the side air guide hood 130, and the movable end of the side air guide hood 130 is fixedly connected to the second bracket 120 around the guide shaft 141, and the rotating shaft 143 applies a pulling force to the side air guide hood 130, and the movement of the second bracket 120 drives the side air guide hood 130 to unfold, and the side air guide hood 130 is driven to shrink by the return force of the rotating shaft 143. It should be noted that the fixed end of the lateral air guide cover 130 can be understood as an end of the lateral air guide cover 130 in a fixed state, which end is always fixed on the side of the first bracket 110, and the movable end of the lateral air guide cover 130 can be understood as an end of the lateral air guide cover 130 in an active state.

[0057] Furthermore, the lateral air guide cover 130 is formed by a plurality of adjacently arranged air guide blocks, and a suitable number of air guide blocks can be selected according to the length of the lateral air guide cover 130, which will not be described in detail here.

[0058] As a further preferred embodiment, the above-mentioned aerodynamic device based on a semi-trailer transport vehicle also includes a top air deflector 150, wherein the top air deflector 150 includes a connecting bracket, wherein the connecting bracket is fixedly connected to the end of the second bracket 120, and when the second bracket 120 moves away from the first bracket 110, the second bracket 120 drives the top air deflector 150 to move to cover the upper surface of the aerodynamic device, and when the second bracket 120 approaches the first bracket 110, the second bracket 120 drives the top air deflector 150 to move, and a steel wire rope connected to the rotating shaft 143 is provided at the rear end of the top air deflector 150, and a guide wheel reversing mechanism is provided in the middle of the top air deflector 150 (the guide wheel reversing structure converts the horizontal tension applied by the rotating shaft 143 into a vertical tension), and when the rotating shaft 143 is recovered, the steel wire rope is simultaneously driven to pull the rear end of the top air deflector 150 downward to form a pullback force, which drives the top air deflector 150 to retract.

[0059] Embodiment 3

[0060] like Fig.12 , 13As shown in Figures 14 and 15, this embodiment further lists an aerodynamic device based on a semi-trailer transport vehicle, wherein the driving bracket 100 includes a third bracket 210 and a fourth bracket 220, and a third connecting rod 213, a fourth connecting rod 214, a fifth connecting rod 215, a sixth connecting rod 216, a seventh connecting rod 217 and an eighth connecting rod 218 can be movably connected between the third bracket 210 and the fourth bracket 220, wherein the third connecting rod 213 and the fourth connecting rod 214 intersect with each other, and the third connecting rod 213 and the sixth connecting rod 216 are parallel, the movable end of the fourth connecting rod 214 is connected to the movable end of the sixth connecting rod 216, the fifth connecting rod 215 and the sixth connecting rod 216 intersect with each other, and the fifth connecting rod 215 and the fourth connecting rod 21 4, the movable end of the fifth connecting rod 215 is connected to the movable end of the third connecting rod 213, the fixed end of the third connecting rod 213 is hinged to one end of the third bracket 210, the fixed end of the fourth connecting rod 214 is hinged to the other end of the third bracket 210, the fixed end of the fifth connecting rod 215 is hinged to one end of the fourth bracket 220, the fixed end of the sixth connecting rod 216 is hinged to the other end of the fourth bracket 220, the seventh connecting rod 217 is connected to the middle end of the third connecting rod 213 and the movable end of the fourth connecting rod 214, the eighth connecting rod 218 is connected to the middle end of the sixth connecting rod 216 and the movable end of the fifth connecting rod 215, and a third driving device 230 for driving the third connecting rod 213 is installed on the third bracket 210. The third driving device drives the third connecting rod 213 according to the first driving instruction or the second driving instruction to realize the switching of the working states of the third bracket 210 and the fourth bracket 220.

[0061] Embodiment 4

[0062] like Fig.15 , 16, 17, this embodiment further lists an aerodynamic device based on a semi-trailer transport vehicle, the driving bracket 100 includes a fifth bracket 310 and a sixth bracket 320, a ninth connecting rod 3109, a tenth connecting rod 3110, an eleventh connecting rod 3111 and a twelfth connecting rod 3112 can be movably connected between the fifth bracket 310 and the sixth bracket 320, the ninth connecting rod 3109 is parallel to the eleventh connecting rod 3111, and one end of the ninth connecting rod 3109 is connected to one end of the twelfth connecting rod 3112, the tenth connecting rod 3110 is connected to the twelfth connecting rod 3112 The tenth connecting rod 3110 is parallel to the fifth bracket 310, and one end of the tenth connecting rod 3110 is connected to one end of the eleventh connecting rod 3111, wherein the other ends of the ninth connecting rod 3109 and the twelfth connecting rod 3112 are each provided with a connecting protrusion, the connecting protrusion of the ninth connecting rod 3109 can be movably inserted into the first sliding groove of the fifth bracket 310, the other end of the tenth connecting rod 3110 can be movably connected to the fifth bracket 310, the connecting protrusion of the twelfth connecting rod 3112 can be movably inserted into the first sliding groove of the sixth bracket 320, and the other end of the eleventh connecting rod 3111 can be movably connected to the sixth bracket 320. A fourth driving device is provided between the tenth connecting rod 3110 and the fifth bracket 310, so that the fourth driving device applies a driving force to the eleventh connecting rod 3111 to realize the approach or distance between the fifth bracket 310 and the sixth bracket 320. Similarly, a driving device can also be provided between the twelfth connecting rod 3112 and the sixth bracket 320.

[0063] Embodiment 5

[0064] like Fig.18 , 19As shown in Figures 20 and 21, this embodiment further lists an aerodynamic device based on a semi-trailer transport vehicle, wherein the driving bracket 100 includes a seventh bracket 410, an eighth bracket 420, a fixed rod 411 fixedly connected to the seventh bracket 410, a lead screw driving rod 412 matched with the fixed rod 411, a first cable driven rod 413, a second cable driven rod 414 and a cable 415, a lead screw assembly 4110 is arranged on the fixed rod 411, the lead screw assembly 4110 is meshingly connected to the lead screw driving rod 412, a lead screw telescopic rod assembly is arranged at one end of the lead screw driving rod 412, and the lead screw telescopic rod assembly is embedded in the lateral sliding groove of the fixed rod 411, and first sliding rods are respectively arranged at both ends of the internal sliding groove of the lead screw driving rod 412. Wheel, second pulley, one end of the first cable follower rod 413 is provided with a first cable 415 telescopic assembly and the first cable 415 telescopic assembly is embedded in the lateral slide groove of the screw drive rod 412, and the third pulley and the fourth pulley are respectively arranged at both ends of the internal cavity of the first cable follower rod 413, one end of the second cable follower rod 414 is provided with a second cable 415 telescopic assembly and the second cable 415 telescopic assembly is embedded in the lateral slide groove of the first cable follower rod 413, the other end of the second cable follower rod 414 is connected to the eighth bracket 420, one end of the cable 415 is connected to the seventh bracket 410, and is fixedly connected to the eighth bracket 420 along the first pulley, the second pulley, the third pulley and the fourth pulley in an S-shaped winding manner.

[0065] The working principle of the above-mentioned driving bracket 100 switching from the contracted state to the extended state is: by applying a force in a predetermined rotation direction to the lead screw assembly 4110 so that the lead screw assembly 4110 drives the lead screw driving rod 412 to move in a direction away from the seventh bracket 410, the lead screw driving rod 412 drives the cable 415 to move, and the first end distance of the cable 415 is extended. At this time, the cable 415 drives the first cable driven rod 413 and the second cable driven rod 414 to move in a direction away from the seventh bracket 410 until the distance between the seventh bracket 410 and the eighth bracket 420 is the largest. Applying a force in the opposite direction to the lead screw assembly 4110 can realize the process of switching from the extended state to the contracted state.

[0066] It should be noted that the predetermined rotation direction may be counterclockwise or clockwise, which needs to be determined according to the structure of the screw assembly 4110, and the rotation direction is intended to rotate the upper screw in the screw assembly 4110 to drive the screw drive rod 412 to move. No specific limitation is made here.

[0067] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one 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 will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An aerodynamic device based on a semi-trailer transport vehicle, comprising a tractor and a trailer connected to the tractor, characterized in that: The invention comprises a flow guide device, which can be movably arranged between the tractor and the trailer, and the fixed end of the flow guide device is fixedly connected to the tractor; the flow guide device comprises a first elastic flow guide plate and a second elastic flow guide plate, the first elastic flow guide plate and the second elastic flow guide plate are arc-shaped, the first elastic flow guide plate is fixedly connected to one side of the tractor, and the second elastic flow guide plate is fixedly connected to the other side of the tractor, the protrusion direction of the first elastic flow guide plate is toward the outside of the tractor, and the protrusion direction of the second elastic flow guide plate is toward the outside of the tractor.

2. An aerodynamic device based on a semi-trailer transport vehicle, comprising a tractor and a trailer connected to the tractor, characterized in that: The invention comprises a flow guide device, which is movably arranged between the tractor and the trailer, and the fixed end of the flow guide device is fixedly connected to the tractor; the flow guide device comprises a pair of drive brackets arranged opposite to each other and a flow guide cover matched with the drive bracket, and the drive bracket works in an extended state when a first drive instruction is obtained, and the drive bracket works in a contracted state when a second drive instruction is obtained; The driving bracket works in a stretched state.

3. The aerodynamic device based on a semi-trailer transport vehicle according to claim 2, characterized in that: The driving bracket includes a first bracket and a second bracket, the first bracket is connected to the driving connecting rod through a first driving device, the second bracket is connected to the transmission connecting rod, and the driving connecting rod is connected to the transmission connecting rod through a connector, wherein the first driving device is used to receive the first driving instruction or the second driving instruction, and execute an action matching the first driving instruction or the second driving instruction.

4. The aerodynamic device based on a semi-trailer transport vehicle according to claim 3, characterized in that: The first driving device includes a motor assembly, a transmission shaft, and a gear box with a helical gear inside, and the proximal end of the driving connecting rod is provided with a follower tooth matching the helical gear, or the first driving device includes a motor assembly, a worm, and a turbine matching the worm, one end of the worm is connected to the motor assembly, the worm and the turbine are meshed and connected to each other, and the proximal end of the driving connecting rod is connected to the turbine via a pin shaft.

5. The aerodynamic device based on a semi-trailer transport vehicle according to claim 4, characterized in that: A driving link gear is disposed at the distal end of the driving connecting rod, and a transmission link gear is disposed at the distal end of the transmission connecting rod. Both the driving link gear and the transmission link gear are connected to the connector, and the driving link gear and the transmission link gear are meshed with each other.

6. The aerodynamic device based on a semi-trailer transport vehicle according to claim 3, characterized in that: It also includes a deflector cover reel, which is arranged adjacent to the first bracket. The deflector cover reel includes a guide shaft, a bracket, and a rotating shaft of a built-in rotating motor assembly. The rotating shaft is fixedly connected to the fixed end of the deflector cover, and the movable end of the deflector cover is fixedly connected to the second bracket around the guide shaft.

7. The aerodynamic device based on a semi-trailer transport vehicle according to claim 2, characterized in that: The driving bracket includes a third bracket and a fourth bracket, and a third connecting rod, a fourth connecting rod, a fifth connecting rod, a sixth connecting rod, a seventh connecting rod and an eighth connecting rod can be movably connected between the third bracket and the fourth bracket, wherein the third connecting rod and the fourth connecting rod intersect each other, and the third connecting rod is parallel to the sixth connecting rod, the movable end of the fourth connecting rod is connected to the movable end of the sixth connecting rod, the fifth connecting rod and the sixth connecting rod intersect each other, and the fifth connecting rod is parallel to the fourth connecting rod, the movable end of the fifth connecting rod is connected to the movable end of the third connecting rod, the fixed end of the third connecting rod is hinged to one end of the third bracket, the fixed end of the fourth connecting rod is hinged to the other end of the third bracket, the fixed end of the fifth connecting rod is hinged to one end of the fourth bracket, the fixed end of the sixth connecting rod is hinged to the other end of the fourth bracket, the seventh connecting rod is connected to the middle end of the third connecting rod and the movable end of the fourth connecting rod, the eighth connecting rod is connected to the middle end of the sixth connecting rod and the movable end of the fifth connecting rod, and a third driving device for driving the third connecting rod is installed on the third bracket.

8. The aerodynamic device based on a semi-trailer transport vehicle according to claim 2, characterized in that: The driving bracket includes a fifth bracket and a sixth bracket, and a ninth connecting rod, a tenth connecting rod, an eleventh connecting rod and a twelfth connecting rod can be movably connected between the fifth bracket and the sixth bracket, the ninth connecting rod is parallel to the eleventh connecting rod, and one end of the ninth connecting rod is connected to one end of the twelfth connecting rod, the tenth connecting rod is parallel to the twelfth connecting rod, and one end of the tenth connecting rod is connected to one end of the eleventh connecting rod, wherein the other ends of the ninth connecting rod and the twelfth connecting rod are each provided with a connecting protrusion, the connecting protrusion of the ninth connecting rod can be movably clamped into the first sliding groove of the fifth bracket, the other end of the tenth connecting rod can be movably connected to the fifth bracket, the connecting protrusion of the twelfth connecting rod can be movably clamped into the first sliding groove of the sixth bracket, and the other end of the eleventh connecting rod can be movably connected to the sixth bracket.

9. The aerodynamic device based on a semi-trailer transport vehicle according to claim 2, characterized in that: The driving bracket includes a seventh bracket, an eighth bracket, a fixed rod fixedly connected to the seventh bracket, a screw driving rod matched with the fixed rod, a first cable driven rod and a second cable driven rod and a cable, a screw assembly is arranged on the fixed rod, the screw assembly is meshingly connected to the screw driving rod, a screw telescopic rod assembly is arranged at one end of the screw driving rod and the screw telescopic rod assembly is always embedded in the lateral sliding groove of the fixed rod, a first pulley and a second pulley are respectively arranged at both ends of the internal sliding groove of the screw driving rod, and a screw driven rod assembly is arranged at one end of the first cable driven rod. A first cable telescopic assembly is provided and the first cable telescopic assembly is embedded in the lateral slide groove of the screw drive rod, a third pulley and a fourth pulley are respectively arranged at both ends of the internal cavity of the first cable driven rod, a second cable telescopic assembly is provided at one end of the second cable driven rod and the second cable telescopic assembly is embedded in the lateral slide groove of the first cable driven rod, the other end of the second cable driven rod is connected to the eighth bracket, one end of the cable is connected to the seventh bracket, and is fixedly connected to the eighth bracket in an S-shaped winding manner along the first pulley, the second pulley, the third pulley and the fourth pulley.

10. An automobile, characterized in that: An aerodynamic device comprising a semi-trailer transport vehicle as described in any one of claims 2-9.

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