CN213057265U

CN213057265U - Box truck side skirt board and box truck with same

Info

Publication number: CN213057265U
Application number: CN202022125596.1U
Authority: CN
Inventors: 孙博; 王增养; 秦向飞
Original assignee: Beijing Foton Cummins Engine Co Ltd
Current assignee: Beijing Foton Cummins Engine Co Ltd
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2021-04-27
Anticipated expiration: 2030-09-24

Abstract

The utility model provides a box freight train side skirt board and have its box freight train. The side skirt board of the van comprises a front side skirt board and a rear side skirt board which are connected, an air guide hole is formed in the rear side skirt board, an opening, facing one side of a car body, of the air guide hole is covered with a flow deflector, the flow deflector is an elastic sheet, and one end of the flow deflector is fixed on the rear side skirt board. Compared with the prior art, the utility model provides a van side skirt board and have its van can effectively reduce the production of packing box and chassis annex vortex, reduces whole car windage and improves crosswind stability. By arranging the elastic flow deflector, the position of the flow deflector can be adjusted according to the wind speed, and the opening degree of the air guide hole is controlled, so that a better flow guiding and resistance reducing effect is achieved; through designing the side skirtboard into split type structure, can effectively reduce the product processing degree of difficulty to reduction in production cost.

Description

Box truck side skirt board and box truck with same

Technical Field

The utility model relates to a vehicle accessory technical field especially relates to a box freight train side skirt board and have its box freight train.

Background

When the automobile runs, the air resistance becomes the running resistance which is mainly needed to be overcome by the engine along with the increase of the speed. The main resistance to vehicle travel when the vehicle speed is below 90km/h is the mechanical resistance, including friction inside the engine, friction of the tires against the ground, etc. And when the vehicle speed exceeds 90km/h, the air resistance becomes the first resistance to be overcome by the vehicle. In practice, the mechanical resistance can be considered as a constant whose magnitude does not vary with the vehicle speed, while the air resistance is a variable that is proportional to the vehicle speed, the air resistance being greater the faster the vehicle speed.

The box-type truck has the advantages that the side faces of the container and the chassis are not shielded, so that airflow flowing from the front of the truck is separated and disturbed at the lower part of the container and the chassis, the energy loss is increased, the wind resistance of the whole truck is increased, the increase of the wind resistance is overcome by consuming larger power when the truck runs, the oil consumption of the whole truck is increased, and meanwhile, the running stability is reduced due to the uneven stress. Therefore, how to reduce the wind resistance when the whole vehicle runs and reduce the air flow separation and disturbance is the key to reduce the oil consumption of the whole vehicle and improve the lateral stability.

SUMMERY OF THE UTILITY MODEL

To above-mentioned prior art van packing box and chassis side because do not shelter from and the windage that produces is too big, the not enough of crosswind poor stability, the utility model aims to provide a van side skirt board, its windage that can reduce the vehicle effectively improves crosswind stability.

The utility model provides a pair of box wagon side skirt board, including front side skirtboard and the rear side skirtboard that is connected, the wind-guiding hole has been seted up on the rear side skirtboard, the wind-guiding hole coats towards the opening of automobile body one side and is stamped the water conservancy diversion piece, the water conservancy diversion piece is the flexure strip, the one end of water conservancy diversion piece is fixed on the rear side skirtboard.

Preferably, the side skirt plate is provided with a plurality of screw holes at the upper part thereof, and the side skirt plate is fixed on the cargo box bracket through the screw holes and bolts arranged in the screw holes.

Preferably, the guide vane is fixed to an edge of the opening on a side close to the front skirt.

Preferably, the cross section of the air guide hole is a curved trapezoid, and an arc-shaped edge of the curved trapezoid is arranged on one side far away from the front skirt board.

Preferably, the side skirting board is of a split structure, and the front side skirting board is detachably connected with the rear side skirting board.

Preferably, the front skirt plate is in threaded connection with the rear skirt plate.

Preferably, the guide vane is made of a bend-resistant plastic.

Preferably, the bending-resistant plastic is one of PPN plastic, PPC plastic, or PPU plastic.

Preferably, the front side skirt and the rear side skirt are made of high strength plastic.

The utility model also provides a box freight train, it includes as above the side skirtboard, the side skirtboard is installed on the packing box support.

Compared with the prior art, the utility model provides a van side skirt board and have its van can effectively reduce the production of packing box and chassis annex vortex, reduces whole car windage and improves crosswind stability. By arranging the elastic flow deflector, the position of the flow deflector can be adjusted according to the wind speed, and the opening degree of the air guide hole is controlled, so that a better flow guiding and resistance reducing effect is achieved; through designing the side skirtboard into split type structure, can effectively reduce the product processing degree of difficulty to reduction in production cost.

The above-mentioned technical characteristics can be combined in various suitable ways or replaced by equivalent technical characteristics as long as the purpose of the invention can be achieved.

Drawings

The invention will be described in more detail hereinafter on the basis of non-limiting examples only and with reference to the accompanying drawings. Wherein:

fig. 1 is a schematic structural view of a side skirt board of a van according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a van having a van side skirt according to an embodiment of the present invention;

FIG. 3 is a cross-sectional pressure distribution result diagram of the middle truck of the present invention;

fig. 4 is a result diagram of the cross-section streamline analysis of the whole vehicle.

Description of reference numerals:

1. a cab; 2. a frame; 3. a cargo box; 4. a front skirt plate; 5. a rear skirt plate; 6. a bolt; 7. a screw hole; 8. a flow deflector; 9. and air guide holes.

Detailed Description

For making the purpose, technical solution and advantages of the present invention clearer, it will be right below that the technical solution of the present invention is clearly and completely described, based on the specific embodiments of the present invention, all other embodiments obtained by the ordinary skilled person in the art without creative work belong to the scope protected by the present invention.

The van side skirt panels are used to shield the van cargo box and the chassis sides. As shown in fig. 1, the side skirt of the van is of a split structure and comprises a front side skirt 4 and a rear side skirt 5. Wherein, the front skirt board 4 is of a rectangular structure, and the upper part and the right side of the front skirt board are both provided with a plurality of screw holes 7; the rear skirt board 5 is of a trapezoid structure with a curved edge, the upper side and the lower side of the rear skirt board are parallel, the left side of the rear skirt board is perpendicular to the upper side and the lower side of the rear skirt board respectively, the right side of the rear skirt board is an arc-shaped side protruding towards the right side, and the upper portion and the left side of the rear skirt board 5 are provided with a plurality of screw holes 7. During assembly, the right side of the front skirt plate 4 is superposed with the left side of the rear skirt plate 5, so that the screw hole 7 on the right side of the front skirt plate 4 is aligned with the screw hole 7 on the left side of the rear skirt plate 5, and the bolt 6 is screwed in to form detachable connection; preferably, the front skirt 4 is superimposed on the outer side of the rear skirt 5, in order to reduce the wind resistance. The screw holes 7 in the upper parts of the front and

rear skirt panels

4, 5 are used to secure the side skirt panels to the bed frame of the van. The lateral skirt board of the van plays a role in rectification through a smooth structure, and generation of vortex is inhibited, so that energy loss is reduced, and wind resistance is reduced.

The side of the rear skirt 5 facing the vehicle body is an inner side, and the side thereof facing away from the vehicle body is an outer side. The rear skirt board 5 is provided with air guide holes 9, and the air guide holes 9 are channels for discharging air from the outer side of the side skirt board to the tail of the vehicle. The air guide holes 9 penetrate through the rear skirt board 5 in the thickness direction, the openings formed on the inner side surface of the rear skirt board 5 of the air guide holes 9 are inner openings, the openings formed on the outer side surface of the rear skirt board 5 of the air guide holes 9 are outer openings, wherein the inner openings are covered with the guide vanes 8, and in order to enable wind to be smoothly discharged to the tail of the vehicle from the air guide holes 9, the inner openings are preferably covered by the guide vanes 8 partially, so that the air guide holes 9 are partially opened. In the running process of the vehicle, after being guided by the front skirt board 4 and the rear skirt board 5, wind enters the wind guide hole 9 from the outer opening and is discharged to the tail of the vehicle from the inner opening. The flow deflector 8 is an elastic sheet, one end of the flow deflector 8 close to the front skirt board 4 is a fixed end, and one end of the flow deflector 8 far away from the front skirt board 4 is a free end. The fixed end is fixed on the rear skirt board 5, specifically, the fixed end is fixed on the edge of one side of the inner opening close to the front skirt board 4, in the running process of a vehicle, when wind flows through the wind guide hole 9, pressure is applied to the wind guide plate, the flow deflector 8 is bent and deformed under the pushing of wind power, the free end of the free end moves towards one side of the vehicle body and is far away from the inner opening, the wind speed is higher, the deformation of the flow deflector 8 is higher, the opening degree of the wind guide hole 9 is higher, the channel for the wind to flow to the tail from the outer side is higher, the fact that the position of the flow deflector 8 can be adjusted according to the wind speed is realized, the opening degree of the.

Preferably, the cross section of the air guide hole 9 is a curved trapezoid corresponding to the rear skirt board 5, the arc-shaped edge of the curved trapezoid is arranged on one side far away from the front skirt board 4, and the guide vane 8 is of a curved trapezoid structure corresponding to the air guide hole 9, so that the resistance of air flowing through the air guide hole 9 can be effectively reduced.

The deflector 8 is preferably made of a bend-resistant plastic, such as PPN plastic; the front skirt 4 and the rear skirt 5 are preferably made of a high strength plastic, such as ABS plastic.

Fig. 2 is a van provided in an embodiment of the present invention, which includes a cab 1, a frame 2, a container support (not shown), a container 3 and a side skirt board, wherein the container support is mounted on the frame 2, the container 3 is mounted on the container support, a plurality of screw holes 7 are further formed in the side of the container support, the screw holes 7 on the side skirt board are aligned with the screw holes 7 on the frame 2, and then bolts 6 are screwed in to fix the side skirt board on the container support, wherein a front side skirt board 4 is mounted on one side close to the cab 1, and a rear side skirt board 5 is mounted on one side close to the tail of the vehicle.

Fig. 3 is a cloud chart of surface pressure distribution of a whole vehicle cargo box and a side skirt plate, which is obtained by establishing a relevant analysis model through ANSYS FLUENT software and calculating through setting a physical model, boundary conditions and the like. The digital-analog model comprises key parts of the whole vehicle, such as a cab, a container, a chassis, tires, a power assembly and the like, wherein the material property of the parts is a rigid wall boundary, and the cooling module is set to be a porous medium. And performing related CFD analysis after the model is built, and obtaining a pressure analysis result. And the surface pressure distribution result is used for evaluating the stress condition change of each part and determining whether the scheme can achieve the optimization effect.

Figure 4 is for further verifying the utility model discloses an validity carries out CFD analysis and calculation at ANSYS FLUENT software, obtains surface pressure distribution and velocity distribution through the calculation to obtain the windage that whole car and each spare part received. Through with the same whole car windage contrast that does not take the side skirt board, increase the utility model discloses a whole car windage of motorcycle type of side skirt board has reduced 8%, specifically to vehicle essential element windage coefficient reduction value as table 1:

table 1: wind resistance coefficient of whole vehicle and main parts

In conclusion, design analysis verifies that the box-type truck side skirt board can effectively reduce the wind resistance of the whole truck, improve the stability of side wind and reduce the oil consumption of the whole truck.

Finally, it should be noted that: the above embodiments and examples are only used to illustrate the technical solution of the present invention, but not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments and examples, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments or examples may still be modified, or some of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments or examples of the present invention.

Claims

1. The side skirt board of the box wagon is characterized by comprising a front side skirt board and a rear side skirt board which are connected, wherein an air guide hole is formed in the rear side skirt board, a guide vane is covered on an opening, facing one side of a wagon body, of the air guide hole, the guide vane is an elastic sheet, and one end of the guide vane is fixed on the rear side skirt board.

2. The van side skirt of claim 1, wherein a plurality of threaded holes are formed in an upper portion of the side skirt, the side skirt being secured to a cargo box support by the threaded holes and bolts received in the threaded holes.

3. The van side skirt of claim 1, wherein the deflector is secured to an edge of the opening adjacent a side of the front side skirt.

4. The van side skirt as claimed in claim 2, wherein the cross-section of the air-guiding hole is a curved trapezoid, the arc-shaped side of the curved trapezoid being disposed on a side remote from the front side skirt.

5. The van side skirt of claim 1, wherein the side skirt is of split construction, the front side skirt being removably connected to the rear side skirt.

6. The van side skirt of claim 5, wherein the front side skirt is threaded with the rear side skirt.

7. The van side skirt of claim 1, wherein the deflector is made of a bend resistant plastic.

8. The van side skirt of claim 7, wherein the bend resistant plastic is one of PPN plastic, PPC plastic, or PPU plastic.

9. A van side skirt according to any of claims 1-6, wherein the front and rear side skirts are made of high strength plastic.

10. A box wagon comprising a side skirt according to any one of claims 1 to 9, the side skirt being mounted on a container support.