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CN-117382755-B - Flexible diversion system and control method

CN117382755BCN 117382755 BCN117382755 BCN 117382755BCN-117382755-B

Abstract

The application relates to a flexible flow guiding system and a control method, wherein a first flow guiding unit is arranged at the top of a cab, two second flow guiding units are respectively positioned at two sides of the first flow guiding unit in the width direction of a vehicle and below the first flow guiding unit, in addition, the first flow guiding unit and the second flow guiding unit are identical in structure and comprise flexible pieces and a coiler, the coiler is arranged on the cab, one end of each flexible piece is coiled in the coiler, the other end of each flexible piece is connected with a vehicle container, gaps between the cab and the vehicle container are covered by the structures, and when different vehicles are adapted, the coiler can be adapted to gaps with different sizes by coiling and uncoiling the flexible pieces. In addition, the retractor can also adjust the tension force to the flexible piece, so that the tension force of the flexible piece is changed, and different diversion requirements of the vehicle under the condition of low speed and high speed are met.

Inventors

  • Lei Yingjian
  • Xue Linyi

Assignees

  • 东风商用车有限公司

Dates

Publication Date
20260512
Application Date
20231031

Claims (9)

  1. 1. A flexible flow directing system, comprising: A first diversion unit for being arranged at the top of the cab (7); The two second diversion units are respectively positioned at two sides of the first diversion unit in the width direction of the vehicle and below the first diversion unit, and the second diversion units and the first diversion units are enclosed to form a diversion structure for covering a gap between a cab (7) and a vehicle container (6), wherein the second diversion units and the first diversion units both comprise flexible pieces (1) and a retractor (2), the retractor (2) is arranged on the cab (7), one end of the flexible piece (1) is wound in the retractor (2), and the other end of the flexible piece (1) is connected with the vehicle container (6); The control device comprises a retractor automatic control module (3), a vehicle speed acquisition module (4) and a tension acquisition module, wherein the vehicle speed acquisition module (4) is used for transmitting vehicle speed information to the retractor automatic control module (3), the tension acquisition module is used for detecting a rotating shaft load value of the retractor (2) and transmitting the rotating shaft load value to the retractor automatic control module (3), and the retractor automatic control module (3) is used for controlling the retractor (2) to wind or stretch the flexible piece (1) according to the vehicle speed information and enabling the tension of the retractor (2) to the flexible piece (1) to be equal to the designed rotating shaft load value.
  2. 2. The flexible fluidic system of claim 1, wherein: the width of the flexible piece (1) gradually increases from one end connected with the cab (7) to one end connected with the vehicle cargo box (6), and the flexible piece (1) is made of elastic materials.
  3. 3. The flexible fluidic system of claim 1, wherein: the flexible piece (1) is detachably connected with one end of the vehicle container (6).
  4. 4. The flexible fluidic system of claim 1, wherein: The control device further comprises a manual control knob of the retractor, the manual control knob of the retractor is arranged on an instrument desk of the vehicle and is connected with the retractor (2) through signals to control the retractor (2) to wind or stretch the flexible piece (1), and the tension acquisition module is further used for sending a rotating shaft load value to the instrument of the vehicle.
  5. 5. The flexible fluidic system of claim 1, wherein: The automatic control module of the retractor, the tension acquisition module and the vehicle speed acquisition module are all arranged on the retractor (2), or, The automatic control module of the retractor and the tension acquisition module are arranged on the retractor (2), the vehicle speed acquisition module is a vehicle ECU, and the vehicle speed acquisition module is in wireless communication connection with the automatic control module of the retractor.
  6. 6. The flexible fluidic system of claim 1, wherein: The coiler (2) in the second flow guiding unit is vertically arranged; the coiler (2) in the first diversion unit is horizontally arranged.
  7. 7. The flexible fluidic system of claim 6, wherein: The first diversion unit also comprises a first position adjusting device, and the first position adjusting device moves the corresponding retractor (2) in the height direction of the vehicle; the second deflector unit further includes a second position adjustment device that moves its corresponding retractor (2) in the vehicle width direction.
  8. 8. The flexible fluidic system of claim 7, wherein: The first position adjusting device comprises a first guide rail and a first screw rod structure which are vertically arranged, wherein a first sliding block which moves vertically is arranged on the first guide rail; The second position adjusting device comprises a second guide rail and a second screw rod structure which are horizontally arranged, a second sliding block which moves vertically is arranged on the second guide rail, one end of a screw rod in the second screw rod structure penetrates through the second sliding block and is in threaded connection with the second sliding block, and the other end of the screw rod in the second screw rod structure is connected with a second driving motor.
  9. 9. A method of controlling a flexible flow guiding system according to any of claims 1-8, comprising the steps of: comparing the vehicle speed with a set threshold value; if the vehicle speed is smaller than or equal to a set threshold value, controlling the retractor (2) to stretch the flexible piece (1) so as to change the tension of the retractor (2) on the flexible piece (1) into a design value I; And if the vehicle speed is greater than the set threshold value, controlling the retractor (2) to tighten the flexible member (1) so as to change the tightening force of the retractor (2) on the flexible member (1) into a design value two.

Description

Flexible diversion system and control method Technical Field The application relates to the field of vehicle airflow control devices, in particular to a flexible diversion system and a control method. Background At present, the types of trailers are various, the gooseneck lengths of different trailers are different, larger or smaller gaps exist between the trailer and a traction main vehicle, and the cab and a container of a cargo truck, so that when the gaps are too large, the fuel consumption of a train can be greatly and negatively influenced. In order to solve the above problems, various main factories provide aerodynamic devices, for example, a side guide cover is an air guide device arranged at the rear side of a cab of a truck or a tractor, and the main function of the side guide cover is to guide the air flow direction between a truck body and a cargo box, so that the air resistance of the truck during high-speed running can be effectively reduced, and the fuel consumption can be reduced. But there are also the following problems: 1. the side guide cover is of a rigid or hard structure and cannot adapt to and meet the gaps of different sizes due to different gaps between the cab and the container of different vehicles, and in addition, if the difference between the width of the side guide cover and the gaps is smaller during pitching or turning of the vehicles, the side guide cover can be damaged due to the rigid or hard structure. 2. The mounting angle or draft angle of the side guide is fixed, but the draft needs to be different in low and high speed vehicle conditions, and in different vehicle speeds. Disclosure of Invention The embodiment of the application provides a flexible flow guiding system and a control method, which are used for solving the problem that a side flow guiding cover in the related art is of a rigid or hard structure and cannot adapt to different gaps between a cab and a container in different vehicles. In a first aspect, there is provided a flexible flow directing system comprising: A first deflector unit for being disposed at the top of the cab; The two second diversion units are respectively positioned at two sides of the first diversion unit in the width direction of the vehicle and below the first diversion unit, and the second diversion units and the first diversion units are enclosed to form a diversion structure for covering a gap between a cab and an upper vehicle container, wherein the second diversion units and the first diversion units both comprise flexible pieces and a coiler, the coiler is arranged on the cab, one end of each flexible piece is coiled in the coiler, and the other end of each flexible piece is connected with the vehicle container; And the control device is used for controlling the winding device to wind or unwind the flexible piece according to the vehicle speed. The gap between the cab and the vehicle container is covered, that is, the structures of the first diversion unit and the second diversion unit are the same, only the sizes or the installation positions are different, the two side edges of the flexible piece of the first diversion unit in the width direction of the vehicle are respectively contacted with the side edge of the top of the second diversion unit, so that an integral U-shaped diversion structure similar to a shielding gap is formed, and the outer surface of the diversion structure connects the cab and the outer surface of the vehicle container into a whole. When the vehicle is used, the retractor is arranged on the surface of the cab opposite to the vehicle container, namely, the surface of the vehicle container, which is opposite to the cab, is used in the length direction of the vehicle, the flexible piece is connected with the top edge and the two side edges of the surface of the vehicle container opposite to the cab, when different vehicles need to be adapted, the control device controls the retractor to retract the flexible piece, and the releasing length of the flexible piece can be changed. In some embodiments, the flexible member is formed of an elastic material and increases in width from an end connected to the cab to an end connected to the cargo box of the vehicle. In some embodiments, the flexible member is removably attached to an end of the vehicle cargo box. In some embodiments, the control device comprises a retractor automatic control module, a vehicle speed acquisition module and a tension acquisition module; the vehicle speed acquisition module sends vehicle speed information to the automatic control module of the retractor; The tension acquisition module is used for detecting a rotating shaft load value of the retractor and sending the rotating shaft load value to the retractor automatic control module. In some embodiments, the control device further comprises a manual control knob of the retractor, wherein the manual control knob of the retractor is arranged on an instrument desk of the vehicle and is con