Cabin roof side rail assembly structure

Abstract

The invention belongs to the technical field of body in white, and provides a cabin roof side rail assembly structure which comprises a front wheel cover upper stiffening beam outer plate, a front wheel cover front connecting plate and a water tank vertical plate, the front wheel cover upper stiffening beam outer plate, the front wheel cover front connecting plate and the water tank vertical plate form an annular closed structure, and a plurality of support assemblies are installed on the surface of the annular closed structure. The invention provides a non-load-bearing automobile cabin roof side rail structure of an internal high-pressure forming process to solve the problems that a traditional automobile headlamp is insufficient in installation rigidity and difficult to stamp and form. Meanwhile, according to the cabin roof side rail structure, the welding number and the welding cost can be reduced, the structural strength, the structural durability and the collision safety performance of the front portion of a vehicle body are effectively improved, and therefore the purposes of being simple in structure, light in weight, low in cost and the like are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of body-in-white, and in particular relates to an upper side beam assembly structure of a cabin. Background Art

[0002] With the rapid development of the global economy, the market demand for vehicles is no longer limited to simple means of transportation, but has expanded to multi-functional scenarios such as travel, crossing and exploration. The road conditions involved in these activities are becoming increasingly complex, including bumpy, muddy, snow-covered, desert and jungle road conditions. Therefore, higher performance requirements are placed on the stability, comfort, safety, durability and other aspects of the vehicle.

[0003] Traditional models usually use high-strength steel plates and increase material thickness to solve the problem of headlight mounting point rigidity; and when dealing with 25% offset collisions, they use patching, that is, increasing local rigidity by adding parts. These solutions not only increase the difficulty of stamping and extend the manufacturing cycle, but also increase costs and reduce platform utilization. Summary of the invention

[0004] In order to solve the problems in the background technology, the present invention proposes a cabin upper side beam assembly structure.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A cabin upper side beam assembly structure, comprising a front wheel housing upper reinforcement beam outer plate, a front wheel housing front connecting plate and a water tank vertical plate;

[0007] One end of the outer plate of the front wheel cover upper reinforcement beam is fixedly connected to the front connecting plate of the front wheel cover;

[0008] One end of the front connecting plate of the front wheel cover away from the outer plate of the reinforcing beam on the front wheel cover is fixedly connected to the surface of the vertical plate of the water tank;

[0009] One end of the water tank vertical plate away from the front connecting plate of the front wheel cover is fixedly connected to the surface of the outer plate of the reinforcing beam on the front wheel cover;

[0010] The outer plate of the reinforcing beam on the front wheel cover, the front connecting plate of the front wheel cover and the vertical plate of the water tank form an annular closed structure, and several bracket assemblies are installed on the surface of the annular closed structure.

[0011] Preferably, the outer plate of the reinforcing beam on the front wheel housing includes a straight outer plate and a curved outer plate which are fixedly connected;

[0012] The end surface of the curved outer plate away from the straight outer plate is fixedly connected to the front connecting plate of the front wheel housing;

[0013] The outer curved surface of the curved outer plate is fixedly connected to the end of the water tank vertical plate away from the front connecting plate of the front wheel cover.

[0014] Preferably, in the annular closed structure, a front fender front mounting bracket assembly is mounted on the outer curved surface of the curved outer panel.

[0015] Preferably, the front connecting plate of the front wheel housing includes a straight connecting plate and a curved connecting plate which are fixedly connected;

[0016] The end of the curved connecting plate away from the straight connecting plate is fixedly connected to the end of the curved outer plate;

[0017] The end of the straight connecting plate away from the curved connecting plate is fixedly connected to the inner surface of the vertical plate of the water tank.

[0018] Preferably, in the annular closed structure;

[0019] The front connecting plate of the front wheel housing is provided with a front headlight bracket support plate assembly, a water tank mounting bracket assembly and a water tank column support plate assembly in sequence;

[0020] The headlight bracket support plate assembly and the water tank mounting bracket assembly are fixedly connected to the surface of the curved connecting plate;

[0021] The water tank column support plate assembly is fixedly connected to the fixed connection between the end of the linear connecting plate and the water tank vertical plate.

[0022] Preferably, the water tank mounting bracket assembly includes a cover lock mounting bracket assembly and a vertical plate upper section assembly;

[0023] The hood lock mounting bracket assembly is fixedly connected to the upper section assembly of the vertical plate to form a semi-enclosed structure;

[0024] The cover lock mounting bracket assembly and the vertical plate upper section assembly are both fixedly connected to the surface of the curved connecting plate to form a fully enclosed structure.

[0025] Preferably, the water tank riser is curved;

[0026] The inner curved surface of the curved water tank vertical plate is fixedly connected to the end of the straight connecting plate;

[0027] The end of the curved water tank vertical plate away from the straight connecting plate is fixedly connected to the outer curved surface of the curved outer plate.

[0028] Preferably, in the annular closed structure, the surface of the water tank riser is sequentially mounted with a water tank riser connecting plate assembly, a water tank cross beam supporting bracket assembly and a fender lower bracket assembly;

[0029] The water tank riser connecting plate assembly is installed on the inner surface of the water tank riser, and the side edge is connected to the inner surface of the front connecting plate of the front wheel housing;

[0030] The water tank cross beam support bracket assembly is fixedly connected to the surface of the water tank vertical plate;

[0031] The fender lower bracket assembly is fixedly connected to the outer surface of the water tank vertical plate.

[0032] Preferably, the water tank riser connecting plate assembly includes a front wheel housing front end plate assembly and a suspension mounting point sleeve;

[0033] The bottom of the front wheel housing front end plate assembly is fixedly connected to the suspension mounting point sleeve;

[0034] The side edge of the front wheel cover front end plate assembly is connected to the inner surface of the front wheel cover front connecting plate;

[0035] The suspension installation point sleeve passes through the water tank vertical plate and is fixedly connected to the vehicle body suspension reinforcement plate, and the vehicle body suspension reinforcement plate is against the outer surface of the water tank vertical plate.

[0036] Preferably, the front wheel cover upper reinforcement beam outer plate, the front wheel cover front connecting plate and the water tank vertical plate are all processed by internal high pressure forming process.

[0037] Beneficial effects of the present invention:

[0038] 1. The cabin upper side beam structure of the present invention adopts the front wheel cover upper reinforcement beam outer plate, the front wheel cover front connecting plate and the water tank vertical plate to improve the structural strength of the front part of the non-load-bearing new energy off-road vehicle in the frontal high-speed collision, 40% offset collision and 25% offset collision, and the cabin upper side beam assembly formed by internal high pressure forming is provided with two energy transfer paths, which decomposes the damage caused by energy concentration and ensures that the passenger compartment has enough space to ensure the safety of the driver, which is better than the safety factor of the traditional cabin upper side beam structure;

[0039] 2. The present invention arranges a variety of bracket assemblies on the annular closed structure to solve the problem that the insufficient rigidity of the front part of the vehicle body causes poor matching between the components of the engine cover system, the fender system, and the headlight system, which affects the appearance. The rigidity and mode of the front part of the vehicle body are improved, the posture of the front part of the vehicle body is stable, and the matching lines between the components are smooth and beautiful.

[0040] 3. The present invention proposes a non-load-bearing automobile cabin upper side beam structure using an internal high pressure forming process to solve the problem of insufficient installation rigidity and difficulty in stamping forming of traditional automobile headlights;

[0041] 4. The cabin upper side beam structure provided by the present invention can reduce the number of welds and the welding cost, and effectively improve the structural strength, structural durability and collision safety performance of the front part of the vehicle body, thereby achieving the purposes of simple structure, light weight and low cost.

[0042] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are 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.

[0044] Figure 1 A schematic structural diagram of a cabin upper side beam assembly structure of the present invention is shown;

[0045] Figure 2 An exploded view of a cabin upper side beam assembly structure of the present invention is shown;

[0046] Figure 3 A view of the collision path transmission axis of the cabin upper side beam assembly of the present invention is shown;

[0047] Figure 4 The axial view of the assembly structure of the upper side beam of the cabin of the present invention is shown;

[0048] Figure 5 A cross-sectional view of an outer plate of a front wheel housing upper reinforcement beam of the present invention is shown;

[0049] Figure 6 An axial view of a water tank riser connecting plate assembly of the present invention is shown;

[0050] Figure 7 An axial view of a water tank riser connecting plate assembly of the present invention is shown;

[0051] Figure 8 A cross-sectional view of the water tank riser connecting plate assembly, the water tank riser, and the vehicle body suspension reinforcement plate of the present invention is shown;

[0052] Fig. 9 An axial view of the fender lower bracket assembly of the present invention is shown.

[0053] In the figure: 1. Front wheel housing upper reinforcement beam outer plate; 101. Straight outer plate; 102. Curved outer plate; 2. Front wheel housing front connecting plate; 201. Straight connecting plate; 202. Curved connecting plate; 3. Radiator vertical plate; 4. Front fender front mounting bracket assembly; 5. Front headlight bracket support plate assembly; 6. Radiator mounting bracket assembly; 601. Hood lock mounting bracket assembly; 602. Vertical plate upper section assembly; 7. Radiator vertical plate connecting plate assembly; 701. Front wheel housing front end plate assembly; 702. Suspension mounting point sleeve; 8. Radiator column support plate assembly; 9. Vehicle body suspension reinforcement plate; 10. Radiator cross beam support bracket assembly; 11. Fender lower bracket assembly; 1101. Fender upper bracket assembly; 1102. Fender lower bracket. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] like Figure 1 As shown, a cabin upper side beam assembly structure includes a front wheel cover upper reinforcing beam outer plate 1, a front wheel cover front connecting plate 2 and a water tank vertical plate 3; wherein one end of the front wheel cover upper reinforcing beam outer plate 1 is welded to the front wheel cover front connecting plate 2, one end of the front wheel cover front connecting plate 2 away from the front wheel cover upper reinforcing beam outer plate 1 is welded to the surface of the water tank vertical plate 3, one end of the water tank vertical plate 3 away from the front wheel cover front connecting plate 2 is welded to the surface of the front wheel cover upper reinforcing beam outer plate 1, the front wheel cover upper reinforcing beam outer plate 1, the front wheel cover front connecting plate 2 and the water tank vertical plate 3 form an annular closed structure, and a plurality of bracket assemblies are installed on the surface of the annular closed structure for supporting and connecting other components.

[0056] It should be noted that the front wheel cover upper reinforcement beam outer plate 1, the front wheel cover front connecting plate 2, and the water tank vertical plate 3 are all formed by internal high pressure forming process, and the combination of the three adopts CO 2 The welding connection forms the upper side beam assembly of the cabin, forming the overall structure of the front part of the vehicle body, which becomes the main path for the transmission of collision energy.

[0057] like Figure 2 As shown, the front wheel housing upper reinforcement beam outer plate 1 includes a straight outer plate 101 and a curved outer plate 102 which are fixedly connected (or integrally formed) in sequence. Figure 2 and Figure 4As can be known, the curved outer plate 102 is welded to the front wheel housing front connecting plate 2 away from the end face of the straight outer plate 101, and its side is welded to the vehicle body. And, the outer curved surface of the curved outer plate 102 is welded to the end of the water tank riser 3 away from the front wheel housing front connecting plate 2.

[0058] In addition, the front wheel housing front connecting plate 2 includes a straight connecting plate 201 and a curved connecting plate 202 which are fixedly connected (or integrally formed) in sequence. The end of the curved connecting plate 202 away from the straight connecting plate 201 is welded to the end of the curved outer plate 102; the end of the straight connecting plate 201 away from the curved connecting plate 202 is welded to the inner surface of the water tank vertical plate 3.

[0059] Meanwhile, the water tank riser 3 is curved. The inner curved surface of the curved water tank riser 3 is welded to the end of the straight connecting plate 201 , and the end of the curved water tank riser 3 away from the straight connecting plate 201 is welded to the outer curved surface of the curved outer plate 102 .

[0060] It should be noted that, combined with Figure 3 It can be seen that when impacted by external force, the impact energy can be decomposed into two paths through the upper side beam assembly, and finally return to the front wheel cover to strengthen the beam outer panel 1 and the body (see Figure 4 ) connection position, the impact energy decays continuously during the transmission process, which solves the problem of ensuring the space in the engine compartment within a safe range when a collision occurs, reduces the engine displacement, and ensures the personal safety of the driver.

[0061] like Figure 5 As shown, it is the cross section of the outer plate 1 of the reinforcing beam on the front wheel cover, and the thickness of the cross section can be selected as 1.4mm (also applicable to the front connecting plate 2 of the front wheel cover and the vertical plate 3 of the water tank). In general, the process can produce tubular components with different cross-sectional shapes in the axial direction, and form a closed cross section, reducing the number of welds, thereby achieving lightweight design. General structural parts can reduce weight by 20% to 30%, and shaft parts can reduce weight by 30% to 50%, which is of great significance for improving the fuel economy and reducing emissions of automobiles. In addition, the internal high pressure forming process reduces the workload of subsequent machining and assembly welding, avoids welding deformation of parts, and improves the integrity and precision of parts. At the same time, due to the reduction of welding points, the fatigue strength of parts is also improved. In addition, the internal high pressure forming process can flexibly design the cross-sectional shape of parts to meet different mechanical performance requirements. This is of great significance for improving the stiffness and strength of the automobile body in white. Finally, the internal high pressure forming process reduces the number of parts and molds, and reduces production costs. At the same time, due to the short process route and high material utilization rate, the production cost is further reduced.

[0062] Furthermore, in the annular closed structure, the bracket assembly includes a front fender front mounting bracket assembly 4, a front headlight bracket support plate assembly 5, a radiator tank mounting bracket assembly 6, a radiator tank vertical plate connecting plate assembly 7, a radiator tank column support plate assembly 8, a radiator tank cross beam support bracket assembly 10 and a fender lower bracket assembly 11.

[0063] The front fender front mounting bracket assembly 4 is mounted on the outer curved surface of the curved outer plate 102 to support and fix the front fender. Such a design not only improves the rigidity of the vehicle body, but also ensures the stability and reliability of the front fender after installation.

[0064] In addition, the surface of the curved connecting plate 202 is welded with the headlight bracket support plate assembly 5 and the water tank mounting bracket assembly 6 for supporting and fixing the water tank and other components. At the same time, the end of the straight connecting plate 201 is welded with the connection between the water tank vertical plate 3 and the water tank column support plate assembly 8 for further enhancing the support strength of this area.

[0065] like Figure 6 As shown, as a preferred solution, the water tank mounting bracket assembly 6 includes a cover lock mounting bracket assembly 601 and a vertical plate upper assembly 602. The cover lock mounting bracket assembly 601 and the vertical plate upper assembly 602 are welded to form a semi-enclosed structure; the cover lock mounting bracket assembly 601 and the vertical plate upper assembly 602 are welded (through Figure 6 (A in the middle) A fully enclosed structure is formed on the surface of the curved connecting plate 202, forming a closed "box" structure as a whole, which solves the installation stiffness requirements of the front bumper beam mounting plate assembly and the front end module assembly, as well as the force supporting the hood lock during closing.

[0066] Furthermore, the radiator riser connecting plate assembly 7, the radiator cross beam supporting bracket assembly 10 and the fender lower bracket assembly 11 are sequentially installed on the surface of the radiator riser 3. The radiator riser connecting plate assembly 7 is installed on the inner surface of the radiator riser 3, and the side is connected to the inner surface of the front connecting plate 2 of the front wheel housing, while the body suspension reinforcement plate 9 is welded to the surface of the radiator riser 3, and the fender lower bracket assembly 11 is welded to the outer surface of the radiator riser 3.

[0067] It should be noted that the fender lower bracket assembly 11 is formed by welding the fender upper bracket assembly 1101 and the fender lower bracket 1102 to form an assembly (see Fig. 9 ), and then the upper side beam assembly of the cabin adopts CO 2 Welding connection. This structure not only meets the installation rigidity of the fender and headlight, but also can realize the adjustment of the fender and headlight in three directions: X, Y, and Z, which is more convenient for appearance matching adjustment.

[0068] like Figure 7As shown, as a preferred solution, the water tank riser connecting plate assembly 7 includes a front wheel housing front end plate assembly 701 and a suspension mounting point sleeve 702. The bottom of the front wheel housing front end plate assembly 701 and the suspension mounting point sleeve 702 adopt CO 2 welding( Figure 7 The front wheel housing front end plate assembly 701 is connected to the inner surface of the front wheel housing front connecting plate 2. Figure 8 It can be seen that the suspension installation point sleeve 702 passes through the water tank vertical plate 3 and is welded with a vehicle body suspension reinforcement plate 9, and the vehicle body suspension reinforcement plate 9 is against the outer surface of the water tank vertical plate 3 to further enhance the support strength of this area. Figure 7 In the structure, the tube blank cavity of the water tank vertical plate connecting plate assembly 7 is adopted to increase the cross-sectional space. The overall structure formed improves the local stiffness and meets the stiffness and durability requirements of the suspension installation.

[0069] It should be noted that the installation position of the front fender front mounting bracket assembly 4 needs to ensure that the gap between the fender and the vehicle body is uniform, and at the same time ensure that the fender can effectively absorb energy when hit to protect the safety of the passenger compartment. The water tank mounting bracket assembly 6 is responsible for installing and fixing the water tank, and is usually located in the front of the engine compartment, close to the front grille. Its installation position needs to ensure that the heat dissipation channel between the water tank and the engine is unobstructed, and at the same time ensure that the water tank is not easily damaged when hit, so as to ensure the normal operation of the cooling system. The water tank riser connecting plate assembly 7 is used to connect the water tank with the surrounding frame or bracket to enhance the stability of the water tank. Its installation position needs to be precisely controlled to ensure that the water tank is firmly and reliably fixed, while avoiding interference with other components. The water tank crossbeam support bracket assembly 10 is usually installed on the crossbeam of the cabin to support the weight of the water tank and its related components. Its installation position needs to ensure that the connection between the bracket and the crossbeam is firm, and at the same time ensure that the bracket does not interfere with or hinder the surrounding components. The fender lower bracket assembly 11 is installed on the side beam or longitudinal beam at the bottom of the cabin to support and fix the lower part of the fender. Its installation position needs to ensure that the gap between the fender and the wheels, suspension and other components is reasonable to avoid abnormal noise or friction during driving.

[0070] The reasonable layout between the above bracket assemblies has the following important significance:

[0071] 1. Ensure the relative positions of various components in the cabin are accurate to avoid mutual interference or collision and ensure the driving safety of the car.

[0072] 2. Optimize the heat dissipation channel to ensure that the heat of the engine, water tank and other components can be dissipated in time to avoid performance degradation or failure caused by local overheating.

[0073] 3. Easy to repair and maintain. Reasonable layout allows maintenance personnel to easily reach relevant areas when replacing or repairing parts, thereby improving work efficiency.

[0074] 4. Improve the overall rigidity and stability of the car. Through reasonable bracket layout and connection, the overall strength of the cabin structure can be enhanced, and the car's handling performance and driving stability can be improved.

[0075] It should be noted that the cabin upper side beam assembly structure of the present invention has the advantages of stable structure, light weight, low cost, etc., and can effectively improve the rigidity and torsional strength of the vehicle body. At the same time, the structure also has good collision energy absorption performance, which can effectively protect the safety of the occupants in the event of a collision. In specific implementation scenarios, the cabin upper side beam assembly structure can be widely used in various types of automobiles, especially in models that require high strength and torsional strength. For example, in models such as SUVs and MPVs, the cabin upper side beam assembly structure can effectively improve the rigidity and stability of the vehicle body, ensuring the safety and comfort of the vehicle during driving. In addition, the cabin upper side beam assembly structure can also be customized and optimized according to the needs of specific models to meet the requirements of different models for body structure and performance.

[0076] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cabin upper beam assembly structure, characterized in that: It comprises a front wheel cover upper reinforcement beam outer plate (1), a front wheel cover front connecting plate (2) and a water tank vertical plate (3); One end of the front wheel cover upper reinforcement beam outer plate (1) is fixedly connected to the front wheel cover front connecting plate (2); One end of the front wheel cover front connecting plate (2) away from the front wheel cover upper reinforcing beam outer plate (1) is fixedly connected to the surface of the water tank vertical plate (3); One end of the water tank vertical plate (3) away from the front wheel housing front connecting plate (2) is fixedly connected to the surface of the front wheel housing upper reinforcing beam outer plate (1); The front wheel cover upper reinforcing beam outer plate (1), the front wheel cover front connecting plate (2) and the water tank vertical plate (3) form an annular closed structure, and a plurality of bracket assemblies are installed on the surface of the annular closed structure.

2. The cabin upper beam assembly structure according to claim 1, characterized in that: The front wheel housing upper reinforcement beam outer plate (1) comprises a straight outer plate (101) and a curved outer plate (102) which are fixedly connected in sequence; The end surface of the curved outer plate (102) away from the straight outer plate (101) is fixedly connected to the front connecting plate (2) of the front wheel housing; The outer curved surface of the curved outer plate (102) is fixedly connected to the end of the water tank vertical plate (3) away from the front connecting plate (2) of the front wheel housing.

3. The cabin upper beam assembly structure according to claim 2, characterized in that: In the annular closed structure, a front fender front mounting bracket assembly (4) is mounted on the outer curved surface of the curved outer panel (102).

4. The cabin upper beam assembly structure according to claim 2, characterized in that: The front wheel housing front connecting plate (2) comprises a straight connecting plate (201) and a curved connecting plate (202) which are fixedly connected in sequence; The end of the curved connecting plate (202) away from the straight connecting plate (201) is fixedly connected to the end of the curved outer plate (102); The end of the straight connecting plate (201) away from the curved connecting plate (202) is fixedly connected to the inner surface of the water tank vertical plate (3).

5. The cabin upper side beam assembly structure according to claim 4, characterized in that: In the annular closed structure; The front wheel housing front connecting plate (2) is provided with a front headlight bracket support plate assembly (5), a water tank mounting bracket assembly (6) and a water tank column support plate assembly (8) in sequence; The headlight bracket support plate assembly (5) and the water tank mounting bracket assembly (6) are fixedly connected to the surface of the curved connecting plate (202); The water tank column support plate assembly (8) is fixedly connected to the fixed connection between the end of the linear connecting plate (201) and the water tank vertical plate (3).

6. The cabin upper beam assembly structure according to claim 5, characterized in that: The water tank mounting bracket assembly (6) comprises a cover lock mounting bracket assembly (601) and a vertical plate upper section assembly (602); The cover lock mounting bracket assembly (601) is fixedly connected to the upper section assembly (602) of the vertical plate to form a semi-enclosed structure; The cover lock mounting bracket assembly (601) and the vertical plate upper section assembly (602) are both fixedly connected to the surface of the curved connecting plate (202) to form a fully enclosed structure.

7. The cabin upper side beam assembly structure according to claim 4, characterized in that: The water tank vertical plate (3) is curved; The inner curved surface of the curved water tank vertical plate (3) is fixedly connected to the end of the straight connecting plate (201); The end of the curved water tank vertical plate (3) away from the straight connecting plate (201) is fixedly connected to the outer curved surface of the curved outer plate (102).

8. The cabin upper side beam assembly structure according to claim 7, characterized in that: In the annular closed structure, the surface of the water tank vertical plate (3) is sequentially mounted with a water tank vertical plate connecting plate assembly (7), a water tank cross beam supporting bracket assembly (10) and a fender lower bracket assembly (11); The water tank riser connecting plate assembly (7) is mounted on the inner surface of the water tank riser (3), and the side edge is connected to the inner surface of the front wheel housing front connecting plate (2); The water tank cross beam support bracket assembly (10) is fixedly connected to the surface of the water tank vertical plate (3); The fender lower bracket assembly (11) is fixedly connected to the outer surface of the water tank vertical plate (3).

9. The cabin upper beam assembly structure according to claim 8, characterized in that: The water tank riser connecting plate assembly (7) comprises a front wheel housing front end plate assembly (701) and a suspension mounting point sleeve (702); The bottom of the front wheel housing front end plate assembly (701) is fixedly connected to the suspension mounting point sleeve (702); The side edge of the front wheel cover front end plate assembly (701) is connected to the inner surface of the front wheel cover front connecting plate (2); The suspension installation point sleeve (702) passes through the water tank vertical plate (3) and is fixedly connected to a vehicle body suspension reinforcement plate (9), and the vehicle body suspension reinforcement plate (9) abuts against the outer surface of the water tank vertical plate (3).

10. A cabin upper beam assembly structure according to any one of claims 1 to 9, characterized in that: The front wheel cover upper reinforcement beam outer plate (1), the front wheel cover front connecting plate (2) and the water tank vertical plate (3) are all processed by adopting the internal high pressure forming process.

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