CN115042884A - Cab front wall and vehicle - Google Patents

Abstract

The application relates to a enclose and vehicle before driver's cabin, enclose before driver's cabin enclose the planking and enclose the inner panel before two. The outside of enclosing the planking before is equipped with level and smooth water conservancy diversion face, encloses the inner panel symmetry before two and sets up in enclosing the both ends of planking along first direction before, and be located before enclose the inboard of planking. The cowl inner panel is spaced apart from the cowl outer panel to define an airflow cavity having a first opening and a second opening. The first opening is located two before enclose the one end that the inner panel is relative each other along first direction, and the second opening is located two before enclose the one end that the inner panel carried on the back each other along first direction. The cross-sectional area of the air flow supplied by the first opening is larger than that of the air flow supplied by the second opening, so that the flow speed of the air flow flowing out of the air flow cavity from the second opening is larger than that of the air flow flowing into the air flow cavity from the first opening. Compared with the scheme of adopting a spoiler, the front wall of the cab can effectively inhibit the phenomenon of airflow separation, thereby reducing the wind resistance of the whole vehicle.

Description

Cab front wall and vehicle

Technical Field

The application relates to the technical field of vehicle cabs, in particular to a front wall of a cab and a vehicle.

Background

In the driving process of a vehicle, the airflow flowing from the front of the cab to the side of the cab generates a counter pressure gradient due to the reduction of the flow speed and the increase of the pressure, so that part of the airflow does not flow along the side of the cab any more, and the phenomenon of airflow separation occurs. The turbulent and vortex areas formed between the separated airflow and the side of the cab can increase energy consumption, and the wind resistance of the whole vehicle is increased.

In the related art, the spoiler is provided on the outer side of the front wall outer panel in the cab, and the airflow cavity is formed between the spoiler and the front wall outer panel, so that the airflow passing through the airflow cavity is accelerated, the pressure of the airflow flowing to the side surface of the cab is reduced, and the airflow separation is suppressed. However, the effect of suppressing the separation of the air flow by the spoiler is not ideal, and a part of the air flow may be separated.

Disclosure of Invention

Accordingly, there is a need for a cab front wall and a vehicle that can more effectively suppress the separation of air flow and reduce the wind resistance of the entire vehicle.

According to a first aspect of the present application, embodiments of the present application provide a cab front wall comprising:

the outer plate of the front wall is provided with a smooth flow guide surface at the outer side;

the two front wall inner plates are symmetrically arranged at two ends of the front wall outer plate along the first direction and are positioned at the inner side of the front wall outer plate; the front wall inner plate and the front wall outer plate are arranged at intervals to define an airflow cavity with a first opening and a second opening; the first opening is located at one end of the two cowl inner panels opposite to each other in the first direction, and the second opening is located at one end of the two cowl inner panels opposite to each other in the first direction;

the cross-sectional area of the first opening for the air flow to flow is larger than that of the second opening for the air flow to flow, so that the flow speed of the air flow flowing out of the air flow cavity from the second opening is larger than that of the air flow flowing into the air flow cavity from the first opening.

In one embodiment, the cab front wall further comprises a baffle disposed within the airflow cavity;

two sides of the flow deflectors are respectively contacted with two opposite sides of the front wall outer plate and the front wall inner plate so as to divide the airflow cavity into a plurality of airflow channels; the airflow channel is used for guiding the airflow which flows out of the airflow cavity through the second opening.

In one embodiment, the number of the guide vanes is multiple, and the guide vanes are arranged in the airflow cavity at intervals.

In one embodiment, one side of the flow deflector is connected with one of the front wall outer plate and the front wall inner plate, and the other side of the flow deflector is abutted against the other of the front wall outer plate and the front wall inner plate.

In one embodiment, the baffle is integrally formed with the cowl outer panel.

In one embodiment, a distance between the cowl inner panel and the cowl outer panel gradually decreases in a direction from the first opening to the second opening.

In one embodiment, the ratio of the cross-sectional area of the first opening for the flow of gas to the cross-sectional area of the second opening for the flow of gas is greater than or equal to 1.5.

In one embodiment, the cab front wall further comprises a plurality of fasteners and a plurality of bosses;

the boss is arranged on the inner side of the front wall outer plate, and the front wall inner plate is connected with the boss through the fastener.

In one embodiment, the cowl inner panel includes a connecting panel and an extension panel connected to each other;

the connecting plate is connected with the boss through the fastener, and the front wall outer plate is connected with a cab body-in-white through the connecting plate;

one end of the extension plate is connected with the connecting plate, and the other end of the extension plate extends towards the middle of the front wall outer plate.

According to a second aspect of the present application, embodiments of the present application also provide a vehicle comprising a cab body in white and a cab cowl as described above;

the cab front wall covers the cab body in white.

Among enclose and the vehicle before above-mentioned driver's cabin, enclose before the driver's cabin and enclose the inner panel before enclosing at least including enclosing planking and two, through enclosing the inner panel before with enclose the planking interval setting, inject the air current cavity that has first opening and second opening, accelerate the air current through the air current cavity, reduce the pressure when the air current flows to driver's cabin side face to restrain the air current separation. The smooth flow guide surface is arranged on the outer side of the front wall outer plate, so that the air flow flowing to the side face of the cab along the outer side of the front wall outer plate is guided, the reduction range of the flow velocity of the air flow is controlled, and the air flow separation is inhibited. Enclose before above-mentioned driver's cabin to the air current that flows to the driver's cabin side through the air current cavity to and enclose the air current homoenergetic that the planking outside flows to the driver's cabin side before along and realize effective control, compare the scheme that adopts the vortex piece, can restrain the air current separation phenomenon more effectively, thereby reduce whole car windage.

Drawings

FIG. 1 is a schematic view of a front wall and an intake grill of a cab according to an embodiment of the present disclosure;

FIG. 2 is a schematic view of the front wall and the grille of the cab of FIG. 1 from another perspective;

FIG. 3 is a schematic view of a cab front wall at one end in a first direction according to an embodiment of the present disclosure;

FIG. 4 is a cross-sectional view of the cab front wall of FIG. 3 at one end in a first direction;

fig. 5 is an exploded view of the cab front wall of fig. 3 at one end in a first direction.

Description of reference numerals:

100. a cab front wall; 110. an airflow cavity; 111. a first opening; 112. a second opening; 10. a front wall outer plate; 11. a flow guide surface; 20. a front wall inner plate; 21. a connecting plate; 22. an extension plate; 30. a flow deflector; 40. a boss; 50. a fastener;

200. an air intake grille.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

In the driving process of a vehicle, the airflow flowing from the front of the cab to the side of the cab generates a counter pressure gradient due to the reduction of the flow speed and the increase of the pressure, so that part of the airflow does not flow along the side of the cab any more, and the phenomenon of airflow separation occurs. The turbulent and vortex areas formed between the separated airflow and the side of the cab can increase energy consumption, and the wind resistance of the whole vehicle is increased. In the related art, the spoiler is arranged on the outer side of the front wall outer plate of the cab, the airflow cavity is formed between the spoiler and the front wall outer plate, the flowing sectional area of the airflow at the inlet of the airflow cavity is larger than that of the airflow at the outlet, so that the airflow passing through the airflow cavity is accelerated, the pressure of the airflow flowing to the side surface of the cab is reduced, and the airflow separation is inhibited.

The inventor of this application sets up the driver's cabin of spoiler before enclosing and carries out the air current and flow simulation analysis at present, finds that the effect of restraining the separation of air current through the spoiler is not ideal, still has partial air current to take place to separate in the vehicle driving process. The inventor of the application discovers through further analysis that in the scheme of adopting the spoiler, the airflow flowing from the front of the cab to the side face of the cab is mainly divided into two parts, one part of the airflow flows to the side face of the cab through the airflow cavity formed between the spoiler and the front wall outer plate, the airflow of the part is accelerated when the airflow passes through the airflow cavity, and the airflow separation phenomenon cannot occur. The other part flows to the side face of the cab from the outer side of the spoiler, and the profile curvature of the spoiler is difficult to control due to the fact that the spoiler is arranged on the outer side of the front wall outer plate, so that the airflow separation phenomenon easily occurs when the airflow of the part flows to the side face of the cab.

To the problem that exists among the above-mentioned correlation technique, this application embodiment provides a enclose and vehicle before driver's cabin to restrain the air current separation phenomenon more effectively, reduce whole car windage.

FIG. 1 shows a schematic view of a cab front wall and an intake grille in an embodiment of the present application; FIG. 2 shows a schematic view of the front wall and the air intake grille of the cab of FIG. 1 from another perspective; FIG. 3 is a schematic view of a cab front wall at one end in a first direction according to an embodiment of the present disclosure; fig. 4 shows a cross-sectional view of the cab front wall shown in fig. 3 at one end in the first direction.

In some embodiments, referring to fig. 1 to 4, embodiments of the present application provide a cab cowl 100, the cab cowl 100 including a cowl outer panel 10 and two cowl inner panels 20. The outer side of the front wall outer plate 10 is provided with a smooth flow guiding surface 11, and the two front wall inner plates 20 are symmetrically arranged at two ends of the front wall outer plate 10 along a first direction (x direction in the figure) and are positioned at the inner side of the front wall outer plate 10. The cowl inner panel 20 is disposed spaced apart from the cowl outer panel 10 to define an airflow cavity 110 having a first opening 111 and a second opening 112. The first opening 111 is located at one end of the two cowl inner panels 20 opposite to each other in the first direction, and the second opening 112 is located at one end of the two cowl inner panels 20 opposite to each other in the first direction. The cross-sectional area of the first opening 111 for the air flow to flow is larger than that of the second opening 112 for the air flow to flow, so that the flow rate of the air flow flowing out of the air flow cavity 110 from the second opening 112 is larger than that of the air flow flowing into the air flow cavity 110 from the first opening 111.

Thus, in the cab cowl 100 according to the embodiment of the present invention, the cowl inner panel 20 is spaced apart from the cowl outer panel 10 to define the airflow cavity 110 having the first opening 111 and the second opening 112, and the airflow passing through the airflow cavity 110 is accelerated to reduce the pressure of the airflow on the side surface of the cab, thereby suppressing the airflow separation. By providing a smooth flow guide surface 11 on the outer side of the cowl outer panel 10, the airflow flowing to the cab side along the outer side of the cowl outer panel 10 is guided, and the reduction range of the airflow velocity is controlled, thereby suppressing the airflow separation. Enclose 100 before above-mentioned driver's cabin to the air current that flows to the driver's cabin side through air current cavity 110 to and enclose the air current homoenergetic that the planking 10 outside flowed to the driver's cabin side before along and realize effective control, compare the scheme that adopts the vortex spare, can restrain the air current separation phenomenon more effectively, thereby reduce whole car windage.

Fig. 5 shows an exploded view of the cab front wall of fig. 3 at one end in a first direction.

In some embodiments, referring to fig. 3 and 5, the cab front 100 further includes a baffle 30 disposed in the airflow cavity 110, and both sides of the baffle 30 are respectively in contact with opposite sides of the cowl outer panel 10 and the cowl inner panel 20 to divide the airflow cavity 110 into a plurality of airflow passages for guiding the airflow flowing out of the airflow cavity 110 through the second opening 112 so that the airflow can be blown toward a target position. In addition, the flow deflector 30 can also dredge the airflow in the airflow cavity 110, so as to avoid energy dissipation caused by airflow turbulence in the airflow cavity 110, and ensure the flow velocity of the airflow flowing out from the second opening 112, thereby inhibiting airflow separation.

As an alternative embodiment, the baffle 30 is configured to extend obliquely toward the position of the door handle, so that the airflow accelerated from the airflow cavity 110 by the second opening 112 is guided to the position of the door handle, thereby blowing away contaminated sewage on the door handle, helping to keep the door handle clean and improving the user experience. It should be noted that the extending direction of the baffle 30 needs to be designed according to a specific vehicle type, so that the airflow flowing out of the airflow cavity 110 through the second opening 112 can be blown to a target position, and the extending direction of the baffle 30 shown in the drawings should not be construed as limiting the present application.

In some embodiments, the number of the guide vanes 30 is multiple, and a plurality of the guide vanes 30 are spaced apart from each other in the airflow cavity 110. The number of the airflow channels is adjusted by setting the number of the guide vanes 30, so that better airflow guiding and airflow dredging effects are obtained. If the number of the airflow channels is too large, the air inlet resistance is easy to increase, so that the airflow speed is reduced, and if the number of the airflow channels is too small, the flow guide effect cannot be ensured. Alternatively, the number of the airflow channels can be 4-5, so that the ideal flow guiding effect can be achieved while the airflow velocity is ensured. Specifically, in the embodiment shown in fig. 5, the number of the flow deflectors 30 is 6, and the airflow cavity 110 is divided into 5 airflow channels.

In some embodiments, one side of the baffle 30 connects one of the cowl outer panel 10 and the cowl inner panel 20, and the other side of the baffle 30 abuts the other of the cowl outer panel 10 and the cowl inner panel 20. It can be understood that the flow guiding and dredging functions of the baffle 30 do not have high requirements on the connection strength of the baffle 30, and therefore, it is not necessary to connect the two sides of the baffle 30 with the front wall outer plate 10 and the front wall inner plate 20 respectively. With this arrangement, it is helpful to simplify the assembly process of the cab front wall 100, and to reduce the manufacturing accuracy requirements.

In the embodiment shown in fig. 5, the baffle 30 is integrally formed with the cowl outer panel 10. As such, the installation and modularization of the cab front wall 100 are facilitated in actual production. Of course, in other embodiments, the baffle 30 may also be integrally formed with the cowl inner panel 20, which is not limited in this application.

In some embodiments, referring to fig. 4, the distance between the cowl inner panel 20 and the cowl outer panel 10 gradually decreases in the direction from the first opening 111 to the second opening 112. Thus, in the direction from the first opening 111 to the second opening 112, the cross-sectional area of the airflow flowing in the airflow cavity 110 is gradually reduced, so that the airflow smoothly accelerates when flowing in the airflow cavity 110, energy dissipation caused by airflow turbulence is avoided, the flow speed of the airflow flowing out from the second opening 112 is ensured, and airflow separation is inhibited.

In some embodiments, the ratio of the cross-sectional area of the first opening 111 for flow of the gas stream to the cross-sectional area of the second opening 112 for flow of the gas stream is greater than or equal to 1.5. That is, the ratio of the flow rate of the air flowing out of the air flow cavity 110 through the second opening 112 to the flow rate of the air flowing into the air flow cavity 110 through the first opening 111 is 1.5 or more. In this way, the pressure of the airflow exiting the airflow cavity 110 through the second opening 112 can be ensured to be sufficiently low, and the separation phenomenon of the airflow can be avoided.

In some embodiments, referring to fig. 5, the cab cowl 100 further includes a plurality of fastening members 50 and a plurality of bosses 40, the bosses 40 are disposed at an inner side of the cowl outer panel 10, and the cowl inner panel 20 is connected to the bosses 40 by the fastening members 50, so that the cowl inner panel 20 is spaced apart from the cowl outer panel 10. Specifically, one side of the cowl inner panel 20 abuts on the boss 40, and the fastener 50 is inserted into the blind hole on the boss 40 from the other side of the cowl inner panel 20 through the through hole on the cowl inner panel 20. Optionally, the blind hole on the boss 40 is provided with an internal thread, and the fastening member 50 is a bolt, so that the front wall inner plate 20 can be assembled and disassembled conveniently.

In some embodiments, the number of the fasteners 50 and the bosses 40 is four, two bosses 40 are distributed on the inner side of one end of the cowl outer panel 10 along the first direction, the other two bosses 40 are distributed on the inner side of the other end of the cowl outer panel 10 along the first direction, and each cowl inner panel 20 is connected with the corresponding two bosses 40 by two fasteners 50. In this way, the number of parts is reduced on the premise of securing the joining strength, contributing to simplification of the manufacture and assembly of the cab cowl 100.

In some embodiments, and with continued reference to FIG. 5, the cowl inner panel 20 includes a connecting panel 21 and an extension panel 22 that are connected to each other, the connecting panel 21 being connected to the boss 40 by a fastener 50, and the cowl outer panel 10 being connected to a cab body (not shown) by the connecting panel 21. One end of the extension plate 22 is connected to the connecting plate 21, and the other end of the extension plate 22 extends toward the middle of the cowl outer panel 10. In the current cab cowl, the cowl inner panel serves only to connect the cowl outer panel to the cab body in white, that is, has only a structure similar to a connecting plate. In the cab cowl 100 according to the embodiment of the present invention, the cowl inner panel 20 also functions to form the airflow cavity 110 with the cowl outer panel 10, and therefore the cowl inner panel 20 of the present invention is further provided with the extension panel 22 on the basis of the connecting plate 21. In this way, the airflow cavity 110 can be formed between the cowl inner panel 20 and the cowl outer panel 10 to suppress airflow separation, and excessive modification is not required in the current production process, which contributes to reduction in production cost.

Based on the same inventive concept. Referring to fig. 1 and 2, embodiments of the present application also provide a vehicle including a cab body-in-white and a cab cowl 100. The cab cowl 100 covers a cab body in white. Enclose 100 before the vehicle through setting up the driver's cabin, to the air current that flows to the driver's cabin side through air current cavity 110 and enclose the air current homoenergetic that planking 10 outside flowed to the driver's cabin side before along and realize effective control, compare the scheme that adopts the vortex spare, can restrain the air current separation phenomenon more effectively to reduce whole car windage.

In some embodiments, with continued reference to fig. 1 and 2, the vehicle further includes an intake grille 200, the cowl outer panel 10 being disposed around the intake grille 200, the two first openings 111 being adjacent to both ends of the intake grille 200 in the first direction. On the one hand, the length of the airflow channel can be maximized by the arrangement, and under the condition that the ratio of the cross-sectional area of the airflow flowing through the first opening 111 to the cross-sectional area of the airflow flowing through the second opening 112 is certain, the increase of the length of the airflow channel is beneficial to prolonging the acceleration process of the airflow, so that the airflow stably accelerates when flowing in the airflow cavity 110, energy dissipation caused by airflow turbulence is avoided, the flow speed of the airflow flowing out from the second opening 112 is ensured, and the airflow separation is effectively inhibited. On the other hand, arranging the position of the airflow inlet as close as possible to the middle of the cab front 100 in the first direction ensures the intake air amount by increasing the intake pressure, i.e., causes more airflow to flow toward the cab side through the airflow cavity 110, thereby more effectively suppressing airflow separation.

In summary, in the cab front wall 100 and the vehicle provided in the embodiment of the present application, the cab front wall 100 includes the front wall outer plate 10, the front wall inner plate 20, the baffle 30, the boss 40, and the fastener 50. By disposing the cowl inner panel 20 at a distance from the cowl outer panel 10 to define the airflow cavity 110 having the first opening 111 and the second opening 112, the airflow passing through the airflow cavity 110 is accelerated to reduce the pressure of the airflow flowing to the side surface of the cab, thereby suppressing the separation of the airflow. By providing a smooth flow guide surface 11 on the outer side of the cowl outer panel 10, the flow flowing to the side of the cab along the outer side of the cowl outer panel 10 is guided, and the reduction range of the flow velocity of the flow is controlled, thereby suppressing the flow separation. The baffle 30 serves to divide the airflow cavity 110 into a plurality of airflow channels to guide the airflow exiting the airflow cavity 110 through the second opening 112. The cowl inner panel 20 is connected to the boss 40 by a fastener 50, so that the cowl inner panel 20 is spaced apart from the cowl outer panel 10. Enclose 100 before above-mentioned driver's cabin to the air current that flows to the driver's cabin side through air current cavity 110 to and enclose the air current homoenergetic that the planking 10 outside flowed to the driver's cabin side before along and realize effective control, compare the scheme that adopts the vortex spare, can restrain the air current separation phenomenon more effectively, thereby reduce whole car windage.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of this patent shall be subject to the appended claims.

Claims (10)

1. A cab front wall, comprising:

the outer side of the front wall is provided with a smooth flow guide surface;

the two front wall inner plates are symmetrically arranged at two ends of the front wall outer plate along the first direction and are positioned at the inner side of the front wall outer plate; the front wall inner plate and the front wall outer plate are arranged at intervals to define an airflow cavity with a first opening and a second opening; the first opening is located at one end of the two cowl inner panels opposite to each other in the first direction, and the second opening is located at one end of the two cowl inner panels opposite to each other in the first direction;

the cross-sectional area of the air flow supplied by the first opening is larger than that of the air flow supplied by the second opening, so that the flow speed of the air flow flowing out of the air flow cavity from the second opening is larger than that of the air flow flowing into the air flow cavity from the first opening.

2. The cab front wall of claim 1, further comprising a baffle disposed within the airflow cavity;

two sides of the flow deflectors are respectively contacted with two opposite sides of the front wall outer plate and the front wall inner plate so as to divide the airflow cavity into a plurality of airflow channels; the airflow channel is used for guiding the airflow which flows out of the airflow cavity through the second opening.

3. The cab front wall according to claim 2, wherein the number of the guide vanes is plural, and the plurality of the guide vanes are arranged at intervals in the airflow cavity.

4. The cab cowl according to claim 2, wherein one side of the guide vane connects one of the cowl outer panel and the cowl inner panel, and the other side of the guide vane abuts the other of the cowl outer panel and the cowl inner panel.

5. The cab front wall according to claim 4, wherein the baffle is integrally formed with the front wall outer panel.

6. The cab front wall according to any one of claims 1 to 5, characterized in that a distance between the cowl inner panel and the cowl outer panel gradually decreases in a direction from the first opening to the second opening.

7. The cab front wall according to any one of claims 1 to 5, characterized in that a ratio of a cross-sectional area of flow of the first opening supply air flow to a cross-sectional area of flow of the second opening supply air flow is 1.5 or more.

8. The cab front wall according to any of claims 1-5, further comprising a plurality of fasteners and a plurality of bosses;

the boss is arranged on the inner side of the front wall outer plate, and the front wall inner plate is connected with the boss through the fastener.

9. The cab front wall according to claim 8, characterized in that the front wall inner panel includes a connecting plate and an extension plate that are connected to each other;

the connecting plate is connected with the boss through the fastener, and the front wall outer plate is connected with a cab body-in-white through the connecting plate;

one end of the extension plate is connected with the connecting plate, and the other end of the extension plate extends towards the middle of the front wall outer plate.

10. A vehicle, characterized by comprising a cab body-in-white and a cab front wall according to any of claims 1-9;

the cab front wall covers the cab body in white.

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