CN214396990U - Front edge guide plate for van - Google Patents

Abstract

The utility model relates to the technical field of auto-parts, in particular to a forward position guide plate for van. The utility model discloses a forward position guide plate for van, include: the air deflector comprises a deflector body which is detachably arranged on the left side edge or the right side edge of the front surface of the container, the deflector body extends along the height direction of the container, and the outer side wall of the deflector body is an arc surface. The utility model discloses in, the forward position guide plate sets up in the both sides of packing box front surface for guide and comb the air current, make the air current more smooth-going flow, and reduce the production of vortex, can effectively reduce whole car aerodynamic drag, reduce whole car oil consumption, improve whole car dynamic economy.

Description

Front edge guide plate for van

Technical Field

The utility model relates to the technical field of auto-parts, in particular to a forward position guide plate for van

Background

With the national higher and higher limit on the fuel consumption of the commercial vehicle, the reduction of the fuel consumption becomes the key point of the cost reduction of the commercial vehicle enterprises. For commercial vehicles running on expressway, the aerodynamic resistance is reduced by 30%, the oil consumption of the vehicles at constant speed of hundred kilometers can be reduced by more than 15%, and the maximum oil consumption can reach 20%.

The van has a larger windward area, and the direct impact of positive wind can cause airflow flowing from the front of the van to generate larger positive pressure on the front surfaces of two protruding parts of the van body, so that more work is consumed to overcome the increase of wind resistance when the van runs, and the energy output of the whole van is increased, thereby increasing the oil consumption of the whole van and reducing the power economy. Therefore, how to reduce the wind resistance when the whole vehicle runs, make the air current flow smoothly, cut the air current, reduce the production of big vortex is the key to reduce the whole vehicle oil consumption and improve the power economy.

SUMMERY OF THE UTILITY MODEL

The utility model provides a forward position guide plate for van for thereby solve because van's packing box front portion leads to whole car resistance of traveling too big because the too big increase car windage of the direct impact of air current production of positive pressure district to increase the technical problem of whole car oil consumption and power economy variation.

The utility model discloses a forward position guide plate for van, include: the air deflector comprises a deflector body which is detachably arranged on the left side edge or the right side edge of the front surface of the container, the deflector body extends along the height direction of the container, and the outer side wall of the deflector body is an arc surface.

In one embodiment, the arc of the outer sidewall of the baffle body is 15 ° to 30 °.

In one embodiment, the deflector body comprises a front deflector section and a rear deflector section which are connected, and the radian of the outer side wall of the front deflector section is greater than that of the outer side wall behind the deflector.

In one embodiment, the baffle body is a hollow structure.

In one embodiment, the deflector body has a height corresponding to a height of the cargo box.

In one embodiment, a guide vane is disposed on an outer side wall of the guide plate body, and the guide vane extends along a radian direction of the outer side wall of the guide plate body.

In one embodiment, the curvature of the outer sidewall of the guide vane coincides with the curvature of the outer sidewall of the deflector body.

In one embodiment, the guide vane comprises a leading vane section and a trailing vane section connected together, wherein the leading vane section is wedge-shaped.

In one embodiment, at least two guide vanes are arranged on the outer side wall of the guide plate body, and the at least two guide vanes are arranged at equal intervals along the height direction of the guide plate body.

In one embodiment, a fixed bottom plate is arranged on the rear side wall of the deflector body, and the fixed bottom plate is detachably connected with the front surface of the container.

Compared with the prior art, the utility model has the advantages of: the utility model discloses a leading edge guide plate sets up the both sides at the packing box front surface for guide and comb the air current, make the air current more smooth-going flow, and reduce the production of vortex, thereby can ensure the car in-process of traveling, the air current that comes from the front can be guided and smooth-going flow in packing box front edge, avoid the air current to produce the separation in advance and at the preceding great vortex negative pressure zone of formation of packing box, can effectively reduce whole car aerodynamic drag, reduce whole car oil consumption, improve whole car dynamic economy.

Drawings

The present invention will be described in more detail hereinafter based on embodiments and with reference to the accompanying drawings.

Fig. 1 is a mounting structure diagram of a front edge deflector on a whole vehicle in an embodiment of the present invention;

fig. 2 is a diagram of the installation of the leading edge baffle on the cargo box in an embodiment of the invention;

fig. 3 is a schematic structural view of a leading edge baffle in an embodiment of the present invention;

fig. 4 is a top view of a leading edge baffle in an embodiment of the invention;

fig. 5 is a structural view of the installation of a front edge deflector on a whole vehicle in another embodiment of the present invention;

fig. 6 is a view of the mounting of the leading edge baffle to the cargo box in another embodiment of the invention;

fig. 7 is a schematic structural view of a leading edge baffle in another embodiment of the present invention;

fig. 8 is a top view of a leading edge baffle in another embodiment of the present invention;

fig. 9 is a schematic structural view of a guide vane in an embodiment of the present invention;

fig. 10 is a pressure cloud of the cargo box and tail section in an embodiment of the invention;

fig. 11 is a graph showing the magnitude of the eddy current at the rear of the vehicle according to an embodiment of the present invention.

Reference numerals:

1-a deflector body; 2-guide vanes; 3-fixing the bottom plate; 4-a cargo box; 5-a cab; 6-bolt;

11-front section of the guide plate; 12-a deflector rear section;

21-blade front section; 22-rear section of blade.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

In the present invention, if the direction (front, back, left, right, inside, outside) is described, the structure shown in fig. 1 is used as a reference for description, but the actual direction of use of the present invention is not limited thereto. Wherein, as will be understood by those skilled in the art, the direction of travel of the vehicle is forward, with the cab 5 forward and the cargo box 4 rearward; the directions perpendicular to the front-back direction are left and right, respectively; one side of the air deflector body 1 adjacent to the other air deflector body 1 is the inner side of the air deflector body, and one side of the air deflector body 1 far away from the other air deflector body 1 is the outer side.

As shown in fig. 1-9, the utility model provides a leading edge guide plate for van, but wide application in whole car manufacturing industry. This leading edge guide plate includes: guide plate body 1, guide plate body 1 detachably sets up at the left side edge or the right side edge of 4 front surfaces of packing box, and guide plate body 1 extends along the direction of height of packing box 4 to the lateral wall of guide plate body 1 is the cambered surface.

The utility model discloses in, the leading edge guide plate sets up the both sides at 4 front surfaces of packing box for guide and comb the air current, make the air current more smooth-going flow, and reduce the production of vortex, thereby can ensure the car in-process of traveling, the air current that comes from the front can be guided and smooth-going flow in 4 front edges of packing box, avoid the air current to produce the separation in advance and at the preceding great vortex negative pressure zone that forms of packing box 4, can effectively reduce whole car aerodynamic drag, reduce whole car oil consumption, improve whole car dynamic economy.

In one embodiment, the arc of the outer sidewall of the baffle body 1 is 15 ° to 30 °.

Wherein, the radian of the lateral wall of guide plate body 1 is too big or the undersize all can influence its water conservancy diversion effect, and the radian is too big can make the air current be difficult to transition to the both sides (the left and right sides) of packing box 4, and the radian undersize can make partial air current directly strike 4 front surfaces of packing box. The radian can play a better role in diversion and resistance reduction.

Preferably, guide plate body 1 includes guide plate anterior segment 11 and guide plate back end 12 that link to each other, and the radian of the lateral wall of guide plate anterior segment 11 is greater than the radian of the lateral wall of guide plate back end 12.

The front spoiler section 11 and the rear spoiler section 12 may have the same curvature, but the curvature of the front spoiler section 11 is set to be larger in consideration of the gap between the cargo box 4 and the front cab 5, which is advantageous for reducing the thickness of the entire spoiler body 1 (i.e., the dimension in the front-rear direction).

Specifically, the radian of the front section 11 of the guide plate is 30 degrees, and the arc radius is 250 mm; the radian of the rear section 12 of the guide plate is 15 degrees, and the arc radius is 500 mm.

In one embodiment, the height of the deflector body 1 corresponds to the height of the cargo box 4 so that the forward air flow is guided by the leading edge deflector at the front edge of the cargo box 4 for smooth flow therethrough.

In addition, the width of guide plate body 1 is 150mm, and the thickness is 180 mm.

Here, the height of the baffle body 1 means the vertical dimension thereof, the width of the baffle body 1 means the horizontal dimension thereof, and the thickness of the baffle body 1 means the front-rear dimension thereof.

In one embodiment, the baffle body 1 may be a hollow structure to reduce weight.

In one embodiment, the outer side wall of the deflector body 1 is provided with a guide vane 2, and the guide vane 2 extends along the radian direction of the outer side wall of the deflector body 1. Wherein, guide vane 2 can cut apart the air current to make the air current more smoothly flow through the lateral wall of guide plate body 1.

Preferably, the radian of the outer side wall of the guide vane 2 is consistent with the radian of the outer side wall of the guide vane body 1, so that the airflow flowing through the outer side of the guide vane 2 can be guided by the outer side wall of the guide vane 2 to smoothly flow through.

In one embodiment, the guide vane 2 comprises a leading vane section 21 and a trailing vane section 22 connected, wherein the leading vane section 21 is wedge-shaped.

In other words, the front end of the blade front section 21 is pointed, and the thickness of the blade front section 21 gradually increases from the front end to the rear end, so that the airflow coming from the front is cut and combed as soon as the airflow contacts the front end of the guide blade 2, so as to avoid the separation of the airflow caused by the positive pressure generated on the airflow.

It should be noted that the surface of the blade front section 21 smoothly transitions to the surface of the blade rear section 22. In addition, both the upper surface and the lower surface of the guide vane 2 may be smooth arc surfaces.

In one embodiment, at least two guide vanes 2 are disposed on the outer side wall of the baffle body 1, and the at least two guide vanes 2 are disposed at equal intervals along the height direction of the baffle body 1.

Wherein, guide vanes 2 are arranged at equal intervals to evenly divide the air flow. Specifically, as shown in fig. 4, the baffle body 1 is provided with 7 guide vanes 2.

In one embodiment, the rear side wall of the deflector body 1 is provided with a fixed floor 3, and the fixed floor 3 is detachably connected to the front surface of the cargo box 4.

In other words, the rear side wall of the air deflector body 1 is the installation surface, and the installation of the fixed bottom plate 3 can enhance the structural strength of the installation surface.

Specifically, at least two mounting holes are formed in the fixing base plate 3, and the fixing base plate 3 is mounted on the front surface of the cargo box 4 by at least two bolts 6, and accordingly, the front surface of the cargo box 4 is also provided with mounting holes for the bolts 6 to pass through.

In one embodiment, the baffle body 1 and the guide vanes 2 are both made of a plastic material.

Preferably, the guide vanes 2 and the baffle body 1 may be integrally formed.

Further preferably, the plastic material is a high-strength composite plastic such as PPN, PPC, PPU, or the like. The high-strength composite plastic has light weight and high strength.

Example one

In this embodiment, the left and right edges of the front surface of the container 4 are respectively provided with a front edge guide plate, and are arranged in parallel. The leading edge baffle includes a baffle body 1.

The outer side wall of the guide plate body 1 is a cambered surface, and the inner side wall and the rear side wall of the guide plate body are both planes; the height of the deflector body 1 is consistent with that of the container 4, the width of the deflector body 1 is 150mm, and the thickness of the deflector body is 180 mm; the radian of the rear section 12 of the guide plate is 15 degrees, and the arc radius is 500 mm; the radian of the front section 11 of the guide plate is 30 degrees, and the arc radius is 250 mm.

Example two

In this embodiment, the left and right edges of the front surface of the container 4 are respectively provided with a front edge guide plate, and are arranged in parallel. The front edge guide plate comprises a guide plate body 1 and guide vanes 2 arranged on the outer side wall of the guide plate body 1.

The outer side wall of the guide plate body 1 is a cambered surface, and the inner side wall and the rear side wall of the guide plate body are both planes; the height of the deflector body 1 is consistent with that of the container 4, the width of the deflector body 1 is 150mm, and the thickness of the deflector body is 180 mm; the radian of the rear section 12 of the guide plate is 15 degrees, and the arc radius is 500 mm; the radian of the front section 11 of the guide plate is 30 degrees, and the arc radius is 250 mm; the radian of guide vane 2's lateral wall is unanimous with the guide plate main part to guide vane 2's blade anterior segment 21 corresponds with guide plate anterior segment 11, blade back end 22 corresponds with guide plate back end 12, and the thickness of blade anterior segment 21 increases from front end to rear end gradually, and the thickness of the rear end of blade anterior segment 21 is 20mm to 30mm, and the thickness of blade back end 22 is from its front end to rear end basic unanimity, and thickness is 20mm to 30 mm.

The thickness of the blade front section 21 and the blade rear section 22 means the dimension thereof in the vertical direction.

The utility model discloses a forward position guide plate has combined CFD analytical method when the design to when reducing the design, reduce time cost, and increase the reliability of design. The effect of using a leading edge baffle on the cargo box 4 in the first embodiment will now be described.

Fig. 10 is a cloud chart of the section pressure of the cargo box 4 and the tail, which is obtained by establishing a relevant analysis model through ANSYS FLUENT software and calculating by setting a physical model, boundary conditions, and the like. The digital-analog model comprises key parts of the whole vehicle, such as a cab 5, a container 4, 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 carrying out gridding treatment after the model is built, and leading the gridding treatment into a FLUENT computing module for simulation analysis, and converging the final result to obtain a pressure distribution cloud picture. The pressure distribution cloud chart can evaluate the size of the negative pressure area and confirm whether the scheme can achieve the optimization effect.

Fig. 11 is a plot of the magnitude of the tail vortex of an automobile, calculated by CFD simulation analysis in ANSYS FLUENT software, for simultaneous determination of airflow strike and separation points.

Compared with the wind resistance of the same vehicle type without the front edge guide plate, the wind resistance of the vehicle type with the guide plate is smaller in aerodynamic positive pressure, the number of vortexes is smaller, energy loss can be reduced, aerodynamic resistance is reduced, the wind resistance of the whole vehicle is reduced by 3.5%, the constant-speed oil consumption of the whole vehicle is reduced by 0.78%, and the wind resistance is shown in table 1.

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

In summary, the effect of the leading edge deflector on the van cargo box 4 was analyzed and verified by design. Adopt on van the utility model discloses a leading edge guide plate has reduced whole car windage, has reduced whole car oil consumption, has improved whole car power economy.

When the van runs at a high speed, the wind resistance ratio is larger than the rolling resistance, the oil consumption of the whole van is increased along with the increase of the speed of the van, and the running efficiency of the whole van is reduced due to the overlarge wind resistance, so that the design of an aerodynamic accessory for the freight truck is particularly important.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. This is merely for convenience in describing the invention and to simplify the description and is not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation and is therefore not to be considered limiting of the invention.

While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (10)

1. A leading edge baffle for a van, comprising: the air deflector comprises a deflector body which is detachably arranged on the left side edge or the right side edge of the front surface of the container, the deflector body extends along the height direction of the container, and the outer side wall of the deflector body is an arc surface.

2. The leading edge baffle of claim 1 wherein the arc of the outer sidewall of the baffle body is 15 ° to 30 °.

3. The leading edge baffle of claim 2 wherein the baffle body includes a leading baffle section and a trailing baffle section connected together, the arc of the outer sidewall of the leading baffle section being greater than the arc of the outer sidewall of the trailing baffle section.

4. The leading edge baffle of any of claims 1-3 wherein the baffle body is a hollow structure.

5. A leading edge baffle as set forth in any one of claims 1-3 wherein the height of the baffle body coincides with the height of the cargo box.

6. The leading edge baffle of any one of claims 1-3 wherein the outer sidewall of the baffle body has guide vanes extending in the direction of the arc of the outer sidewall of the baffle body.

7. The leading edge baffle of claim 6 wherein the arc of the outer sidewall of the guide vane coincides with the arc of the outer sidewall of the baffle body.

8. The leading edge baffle of claim 6 wherein the guide vane comprises a leading vane segment and a trailing vane segment connected together, wherein the leading vane segment is wedge-shaped.

9. The leading edge baffle of claim 6 wherein at least two of the guide vanes are disposed on an outer sidewall of the baffle body, the at least two guide vanes being equally spaced apart along a height direction of the baffle body.

10. A leading edge baffle as claimed in any one of claims 1 to 3 wherein a fixed floor is provided on the rear side wall of the baffle body, the fixed floor being removably attachable to the front surface of the cargo box.

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