A cross beam structure under a water trough of a vehicle body

Abstract

The present invention relates to the field of fixing the lower cross beam of a vehicle body water trough, and specifically to a lower cross beam structure of a vehicle body water trough. It includes a lower cross beam assembly of a water trough, a front panel water trough, a reinforcing plate assembly on a right front wheel cover, and a reinforcing plate assembly on a left front wheel cover. The lower cross beam structure of a vehicle body water trough described in the present invention, wherein the lower cross beam assembly of the water trough and the two ends of the front panel water trough are connected to the reinforcing plate assembly on the right front wheel cover and the reinforcing plate assembly on the left front wheel cover, forming a structure similar to a bridge pier, and the lower cross beam assembly of the water trough, the reinforcing plate assembly on the right front wheel cover, and the reinforcing plate assembly on the left front wheel cover are connected to the front panel water trough through welding points, and closed cross sections are formed at the bridge piers and bridge arches, which greatly improves the rigidity and strength of the water trough assembly. At the same time, it forms an integral reinforcement structure with the left and right longitudinal beam assemblies to improve the overall rigidity of the front end structure of the vehicle body.

Description

Technical Field

[0001] The invention relates to the field of fixing a lower cross beam of a vehicle body water trough, in particular to a lower cross beam structure of a vehicle body water trough. Background Art

[0002] The existing lower crossbeam structure of the vehicle body water trough is mainly: the lower crossbeam of the water trough is connected with the water trough to increase the rigidity and strength of the water trough assembly. It is widely used in welded water troughs.

[0003] The existing structure has the following problems:

[0004] 1. The lower crossbeam of the water trough is connected to the water trough through welding points, and the structure is a plane structure, which has little effect on improving the overall rigidity and strength of the water trough.

[0005] 2. The cross beam under the water trough is not connected to the longitudinal beam, and does not form an overall reinforced structure, which has little effect on the rigidity of the overall structure. Summary of the invention

[0006] In order to solve many problems existing in the existing cross beam structure under a water trough of a vehicle body, the present invention provides a cross beam structure under a water trough of a vehicle body.

[0007] The present invention is realized by the following technical scheme: a vehicle body water trough lower crossbeam structure, comprising a water trough lower crossbeam assembly, a front wall plate water trough, a right front wheel cover upper reinforcement plate assembly and a left front wheel cover upper reinforcement plate assembly,

[0008] The lower crossbeam assembly of the water flow trough includes a first cross plate, a first vertical plate and a second vertical plate, the upper and lower ends of the first cross plate are respectively connected to the first vertical plate and the second vertical plate, and the first vertical plate, the first cross plate and the second vertical plate together form a U-shaped structure, and the first vertical plate and the second vertical plate respectively extend outwards with a first vertical plate extension edge and a second vertical plate extension edge;

[0009] The dash panel water flow channel includes a third vertical plate, a first inclined plate and a second horizontal plate, the middle part of the third vertical plate is connected to the upper end of the first inclined plate, the lower end of the first inclined plate is connected to the upper end of the second horizontal plate, and the two ends of the third vertical plate are respectively connected to the two sides of the upper end of the second horizontal plate;

[0010] The right front wheel housing upper reinforcement plate assembly includes a fourth vertical plate, a third horizontal plate and a fifth vertical plate, wherein the fourth vertical plate is connected to the upper end of the third horizontal plate, and the fifth vertical plate is connected to the lower end of the third horizontal plate;

[0011] The left front wheel housing upper reinforcement plate assembly includes a sixth vertical plate, a fourth horizontal plate and a seventh vertical plate, wherein the sixth vertical plate is connected to the upper end of the fourth horizontal plate, and the seventh vertical plate is connected to the lower end of the fourth horizontal plate;

[0012] The first inclined plate of the dash panel water flow channel is welded to the extended edge of the first vertical plate, and the second horizontal plate of the dash panel water flow channel is welded to the extended edge of the second vertical plate;

[0013] The fourth vertical plate, the third horizontal plate and the fifth vertical plate of the right front wheel housing upper reinforcement plate assembly are respectively welded to the right ends of the first vertical plate, the first horizontal plate and the second vertical plate of the water flow channel lower cross beam assembly;

[0014] The sixth vertical plate, the fourth horizontal plate and the seventh vertical plate of the left front wheel cover upper reinforcement plate assembly are respectively welded to the left ends of the first vertical plate, the first horizontal plate and the second vertical plate of the water flow channel lower cross beam assembly.

[0015] As a further improvement of the technical solution of the present invention, the middle part of the first horizontal plate of the lower cross beam assembly of the water trough is bent into an arch toward the front panel water trough, the first inclined plate of the front panel water trough is an arch that is adapted to the extended edge of the first vertical plate of the lower cross beam assembly of the water trough, and the middle part of the second horizontal plate is an arch that is adapted to the extended edge of the second vertical plate of the lower cross beam assembly of the water trough.

[0016] As a further improvement of the technical solution of the present invention, the fourth vertical plate and the fifth vertical plate of the reinforcement plate assembly on the right front wheel cover respectively extend outward with a fourth vertical plate extension edge and a fifth vertical plate extension edge, the fourth vertical plate extension edge is welded to the right end of the first vertical plate extension edge and the second horizontal plate outside the first vertical plate extension edge, and the fifth vertical plate extension edge is welded to the right end of the second vertical plate extension edge and the second horizontal plate outside the second vertical plate extension edge.

[0017] As a further improvement of the technical solution of the present invention, the sixth vertical plate and the seventh vertical plate of the reinforcement plate assembly on the left front wheel cover respectively extend outward with a sixth vertical plate extension edge and a seventh vertical plate extension edge, the sixth vertical plate extension edge is welded to the left end of the first vertical plate extension edge and the second horizontal plate outside the first vertical plate extension edge, and the seventh vertical plate extension edge is welded to the left end of the second vertical plate extension edge and the second horizontal plate outside the second vertical plate extension edge.

[0018] As a further improvement of the technical solution of the present invention, the second transverse plate located outside the right front wheel cover upper reinforcement plate assembly and the left front wheel cover upper reinforcement plate assembly are respectively provided with shock absorber mounting holes connected to the shock absorbers.

[0019] As a further improvement to the technical solution of the present invention, the first vertical plate extension edge and the second vertical plate extension edge are respectively provided with a plurality of external bosses protruding outwards along the length direction.

[0020] As a further improvement to the technical solution of the present invention, a plurality of inner bosses are convexly provided on the first inclined plate corresponding to the outer bosses on the extending edge of the first vertical plate.

[0021] As a further improvement of the technical solution of the present invention, a connecting plate is extended outwardly from the third vertical plate of the front panel water trough, and the connecting plate is connected to the ventilation cover plate.

[0022] As a further improvement of the technical solution of the present invention, a wiring harness insertion hole is opened in the middle of the second horizontal plate of the front panel water trough.

[0023] As a further improvement of the technical solution of the present invention, at least one electrophoresis exhaust hole is provided on the second transverse plate of the front panel water trough.

[0024] The lower cross beam structure of the water trough of the vehicle body described in the present invention, wherein the lower cross beam assembly of the water trough and the two ends of the front wall plate water trough are connected with the upper reinforcement plate assembly of the right front wheel cover and the upper reinforcement plate assembly of the left front wheel cover, forming a structure similar to a bridge pier, and the lower cross beam assembly of the water trough, the upper reinforcement plate assembly of the right front wheel cover and the upper reinforcement plate assembly of the left front wheel cover are connected with the front wall plate water trough through welding points, forming a closed cross section at the bridge pier and the bridge arch, greatly improving the rigidity and strength of the water trough assembly. At the same time, it forms an integral reinforcement structure with the left and right longitudinal beam assemblies to improve the overall rigidity of the front end structure of the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only 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.

[0026] Figure 1 It is a front view of the lower cross beam structure of the vehicle body water trough of the present invention.

[0027] Figure 2 for Figure 1 Top view of the .

[0028] Figure 3 It is the front view of the lower crossbeam assembly of the water flow trough.

[0029] Figure 4 It is a schematic diagram of the rear view structure of the lower crossbeam assembly of the water flow trough.

[0030] Figure 5 It is the front view of the water trough of the front panel.

[0031] In the figure: 1-water flow channel lower crossbeam assembly, 11-first vertical plate, 101-external boss, 111-first vertical plate extension edge, 12-first horizontal plate, 121-external reinforcement rib, 13-second vertical plate, 131-second vertical plate extension edge, 2-front wall plate water flow channel, 21-third vertical plate, 22-second horizontal plate, 23-first inclined plate, 201-inner boss, 211-connecting plate, 221-shock absorber mounting hole, 222-wiring harness insertion hole, 2 23-electrophoretic exhaust hole, 224-shock absorber mounting surface, 225-internal reinforcement rib, 3-reinforcement plate assembly on right front wheel cover, 31-fourth vertical plate, 311-extension edge of fourth vertical plate, 32-third horizontal plate, 33-fifth vertical plate, 331-extension edge of fifth vertical plate, 4-reinforcement plate assembly on left front wheel cover, 41-sixth vertical plate, 42-fourth horizontal plate, 43-seventh vertical plate, 411-extension edge of sixth vertical plate, 431-extension edge of seventh vertical plate. DETAILED DESCRIPTION

[0032] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0033] See also Figure 1 and Figure 2 This embodiment provides a cross beam structure under the vehicle body water trough. The directions of "left" and "right" described in the text are based on the installation position of the cross beam structure under the vehicle body water trough on the vehicle body. Therefore, there are situations where the directions are different from those shown in the figure, for example Figure 1 and Figure 2 The left side of the diagram is actually the right side of the vehicle's forward direction, and the right side of the diagram is actually the left side of the micro-vehicle's forward direction.

[0034] A vehicle body water trough lower cross beam structure in this embodiment specifically includes a water trough lower cross beam assembly 1, a front wall plate water trough 2, a right front wheel housing upper reinforcement plate assembly 3 and a left front wheel housing upper reinforcement plate assembly 4.

[0035] The lower cross beam assembly 1 of the water trough includes a first cross plate 12, a first vertical plate 11 and a second vertical plate 13, wherein the upper and lower ends of the first cross plate 12 are respectively connected to the first vertical plate 11 and the second vertical plate 13, and the first vertical plate 11, the first cross plate 12 and the second vertical plate 13 together form a U-shaped structure, and the first vertical plate 11 and the second vertical plate 13 respectively extend outwards with a first vertical plate extension edge 111 and a second vertical plate extension edge 131;

[0036] The dash panel water channel 2 includes a third vertical plate 21, a first inclined plate 23 and a second horizontal plate 22, wherein the middle portion of the third vertical plate 21 is connected to the upper end of the first inclined plate 23, the lower end of the first inclined plate 23 is connected to the upper end of the second horizontal plate 22, and the two ends of the third vertical plate 21 are respectively connected to the two sides of the upper end of the second horizontal plate 22;

[0037] The right front wheel housing upper reinforcement plate assembly 3 includes a fourth vertical plate 31, a third horizontal plate 32 and a fifth vertical plate 33, wherein the fourth vertical plate 31 is connected to the upper end of the third horizontal plate 32, and the fifth vertical plate 33 is connected to the lower end of the third horizontal plate 32;

[0038] The left front wheel housing upper reinforcement plate assembly 4 includes a sixth vertical plate 41, a fourth horizontal plate 42 and a seventh vertical plate 43, wherein the sixth vertical plate 41 is connected to the upper end of the fourth horizontal plate 42, and the seventh vertical plate 43 is connected to the lower end of the fourth horizontal plate 42;

[0039] The first inclined plate 23 of the dash panel water flow channel 2 is welded to the first vertical plate extension edge 111, and the second horizontal plate 22 of the dash panel water flow channel 2 is welded to the second vertical plate extension edge 131;

[0040] The fourth vertical plate 31, the third horizontal plate 32 and the fifth vertical plate 33 of the right front wheel housing upper reinforcement plate assembly 3 are respectively welded to the right ends of the first vertical plate 11, the first horizontal plate 12 and the second vertical plate 13 of the water flow channel lower cross beam assembly 1;

[0041] The sixth vertical plate 41 , the fourth horizontal plate 42 and the seventh vertical plate 43 of the left front wheel housing upper reinforcement plate assembly 4 are respectively welded to the left ends of the first vertical plate 11 , the first horizontal plate 12 and the second vertical plate 13 of the water trough lower crossbeam assembly 1 .

[0042] In this embodiment, the right front wheel housing upper reinforcement plate assembly 3 and the left front wheel housing upper reinforcement plate assembly 4 are respectively connected to the water trough lower cross beam assembly 1 through welding points, forming a three-sided welding point connection structure. Figure 2 As shown, the right front wheel housing upper reinforcement plate assembly 3 and the left front wheel housing upper reinforcement plate assembly 4 respectively form a structure similar to a bridge pier with the water trough lower cross beam assembly 1. In specific implementation, the other ends of the right front wheel housing upper reinforcement plate assembly 3 and the left front wheel housing upper reinforcement plate assembly 4 are respectively connected to the longitudinal beam assembly through welding points to form an integral reinforcement structure, thereby improving the overall rigidity of the front end structure of the vehicle body.

[0043] Furthermore, the first inclined plate 23 of the front panel water channel 2 is connected to the first vertical plate extension edge 111 by welding points, and the second cross plate 22 of the front panel water channel 2 is connected to the second vertical plate extension edge 131 by welding points, and a closed section is formed between the water channel lower cross beam assembly 1 and the front panel water channel 2, which greatly improves the rigidity and strength of the water channel assembly.

[0044] In this embodiment, the middle portion of the first horizontal plate 12 of the water trough lower cross beam assembly 1 is bent into an arch shape toward the front panel water trough 2, the first inclined plate 23 of the front panel water trough 2 is an arch shape that matches the first vertical plate extension edge 111 of the water trough lower cross beam assembly 1, and the middle portion of the second horizontal plate 22 is an arch shape that matches the second vertical plate extension edge 131 of the water trough lower cross beam assembly 1. Figure 2 As shown, the lower cross beam assembly 1 of the water flow channel forms an arch structure, and the first inclined plate 23 of the front panel water flow channel 2 also forms an arch, forming a bridge arch structure, which cooperates with the right front wheel cover upper reinforcement plate assembly 3 and the left front wheel cover upper reinforcement plate assembly 4 similar to bridge piers, and the overall structure forms an arch bridge structure, which greatly increases the rigidity, strength and stability of the structure.

[0045] Specifically, Figure 1 As shown, the left and right ends of the lower cross beam assembly 1 of the water trough are downward as a whole, which can improve the deformation resistance of the lower cross beam assembly 1 of the water trough.

[0046] The fourth vertical plate 31 and the fifth vertical plate 33 of the right front wheel housing upper reinforcement plate assembly 3 respectively extend outwards with a fourth vertical plate extension edge 311 and a fifth vertical plate extension edge 331, the fourth vertical plate extension edge 311 is welded to the right end of the first vertical plate extension edge 111 and the second horizontal plate 22 outside the first vertical plate extension edge 111, and the fifth vertical plate extension edge 331 is welded to the right end of the second vertical plate extension edge 131 and the second horizontal plate 22 outside the second vertical plate extension edge 131. The benefit of such a setting is that the installation strength of the right front wheel housing upper reinforcement plate assembly 3 on the water trough lower crossbeam assembly 1 and the front panel water trough 2 is increased. Similarly, the sixth vertical plate 41 and the seventh vertical plate 43 of the left front wheel housing upper reinforcement plate assembly 4 respectively extend outwards with a sixth vertical plate extension edge 411 and a seventh vertical plate extension edge 431, the sixth vertical plate extension edge 411 is welded to the left end of the first vertical plate extension edge 111 and the second transverse plate 22 outside the first vertical plate extension edge 111, and the seventh vertical plate extension edge 431 is welded to the left end of the second vertical plate extension edge 131 and the second transverse plate 22 outside the second vertical plate extension edge 131. In this way, the installation strength of the left front wheel housing upper reinforcement plate assembly 4 on the water channel lower crossbeam assembly 1 and the front panel water channel 2 is increased.

[0047] In this embodiment, the second transverse plate 22 located outside the right front wheel housing upper reinforcement plate assembly 3 and the left front wheel housing upper reinforcement plate assembly 4 is respectively provided with a shock absorber mounting hole 221 connected to the shock absorber. Figure 1As shown, there are four shock absorber mounting holes 221 on both sides, which are connected to the shock absorbers respectively. In order to facilitate the installation of the shock absorber on the second cross plate 22, the second cross plate 22 located at the shock absorber mounting holes 221 is inwardly recessed to form a shock absorber mounting surface 224, so that the shock absorber can be installed on the second cross plate 22 in a snug manner.

[0048] Furthermore, the first vertical plate extension edge 111 and the second vertical plate extension edge 131 are respectively provided with a plurality of external bosses 101 protruding outwards along the length direction. Figure 3 As shown, the outer boss 101 can increase the local rigidity of the lower crossbeam assembly 1 of the water trough. In addition, a plurality of inner bosses 201 are convexly provided on the first inclined plate 23 corresponding to the outer boss 101 on the first vertical plate extension edge 111. These inner bosses 201 can also increase the local rigidity of the front panel water trough 2, and the inner bosses 201 can also reduce the effect of stamping wrinkles. In this embodiment, the outer bosses 101 correspond to the inner bosses 201 one by one, which is convenient for workers to perform spot welding during spot welding and reduces welding time.

[0049] like Figure 5 As shown, the third vertical plate 21 of the front panel water channel 2 is extended outwardly to be provided with a connecting plate 211, and the connecting plate 211 is connected to the ventilation cover plate.

[0050] Specifically, a harness insertion hole 222 is provided in the middle of the second transverse plate 22 of the front panel water trough 2, so as to facilitate the insertion of the harness that needs to be inserted.

[0051] Furthermore, two electrophoresis exhaust holes 223 are provided on the second horizontal plate 22 of the front panel water flow channel 2. Figure 5 As shown, they are respectively located on both sides below the second transverse plate 22.

[0052] like Figure 3 As shown, a plurality of external reinforcing ribs 121 are respectively recessed on the first transverse plate 12 of the water trough lower cross beam assembly 1 along the length direction, so that the strength of the first transverse plate 12 can be improved.

[0053] like Figure 5 As shown, a plurality of inner reinforcing ribs 225 are laterally recessed on the second transverse plate 22 of the front panel water channel 2, so that the strength of the second transverse plate 22 can be improved.

[0054] like Figure 1 and 2 As shown, the water trough lower cross beam assembly 1, the front panel water trough 2, the right front wheel cover upper reinforcement plate assembly 3 and the left front wheel cover upper reinforcement plate assembly 4 are an integrated structure. The integrated structure reduces the investment in manpower and material resources, reduces the matching cost, improves the strength, and increases the overall dynamic stiffness.

[0055] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A cross beam structure under a water trough of a vehicle body, characterized in that: It comprises a water trough lower crossbeam assembly (1), a front panel water trough (2), a right front wheel cover upper reinforcement plate assembly (3) and a left front wheel cover upper reinforcement plate assembly (4), The water trough lower crossbeam assembly (1) comprises a first cross plate (12), a first vertical plate (11) and a second vertical plate (13); the first cross plate (12) is connected to the first vertical plate (11) and the second vertical plate (13) at its upper and lower ends respectively; the first vertical plate (11), the first cross plate (12) and the second vertical plate (13) together form a U-shaped structure; the first vertical plate (11) and the second vertical plate (13) respectively extend outwards to form a first vertical plate extension edge (111) and a second vertical plate extension edge (131); The dash panel water channel (2) comprises a third vertical plate (21), a first inclined plate (23) and a second transverse plate (22), wherein the middle portion of the third vertical plate (21) is connected to the upper end of the first inclined plate (23), the lower end of the first inclined plate (23) is connected to the upper end of the second transverse plate (22), and the two ends of the third vertical plate (21) are respectively connected to both sides of the upper end of the second transverse plate (22); The right front wheel housing upper reinforcement plate assembly (3) comprises a fourth vertical plate (31), a third horizontal plate (32) and a fifth vertical plate (33), wherein the fourth vertical plate (31) is connected to the upper end of the third horizontal plate (32), and the fifth vertical plate (33) is connected to the lower end of the third horizontal plate (32); The left front wheel housing upper reinforcement plate assembly (4) comprises a sixth vertical plate (41), a fourth horizontal plate (42) and a seventh vertical plate (43), wherein the sixth vertical plate (41) is connected to the upper end of the fourth horizontal plate (42), and the seventh vertical plate (43) is connected to the lower end of the fourth horizontal plate (42); The first inclined plate (23) of the dash panel water flow channel (2) is welded to the first vertical plate extension edge (111), and the second horizontal plate (22) of the dash panel water flow channel (2) is welded to the second vertical plate extension edge (131); The fourth vertical plate (31), the third horizontal plate (32) and the fifth vertical plate (33) of the right front wheel housing upper reinforcement plate assembly (3) are respectively welded to the right ends of the first vertical plate (11), the first horizontal plate (12) and the second vertical plate (13) of the water flow channel lower cross beam assembly (1); The sixth vertical plate (41), the fourth horizontal plate (42) and the seventh vertical plate (43) of the left front wheel housing upper reinforcement plate assembly (4) are respectively welded to the left ends of the first vertical plate (11), the first horizontal plate (12) and the second vertical plate (13) of the water flow channel lower cross beam assembly (1); The middle portion of the first horizontal plate (12) of the water trough lower cross beam assembly (1) is bent toward the front panel water trough (2) into an arch shape, the first inclined plate (23) of the front panel water trough (2) is an arch shape that matches the first vertical plate extension edge (111) of the water trough lower cross beam assembly (1), and the middle portion of the second horizontal plate (22) is an arch shape that matches the second vertical plate extension edge (131) of the water trough lower cross beam assembly (1); The fourth vertical plate (31) and the fifth vertical plate (33) of the reinforcing plate assembly (3) on the right front wheel housing respectively extend outwards to form a fourth vertical plate extension edge (311) and a fifth vertical plate extension edge (331); the fourth vertical plate extension edge (311) is welded to the right end of the first vertical plate extension edge (111) and the second transverse plate (22) located outside the first vertical plate extension edge (111); and the fifth vertical plate extension edge (331) is welded to the right end of the second vertical plate extension edge (131) and the second transverse plate (22) located outside the second vertical plate extension edge (131); The sixth vertical plate (41) and the seventh vertical plate (43) of the left front wheel cover upper reinforcement plate assembly (4) respectively extend outwards to have a sixth vertical plate extension edge (411) and a seventh vertical plate extension edge (431); the sixth vertical plate extension edge (411) is welded to the left end of the first vertical plate extension edge (111) and the second transverse plate (22) located outside the first vertical plate extension edge (111); the seventh vertical plate extension edge (431) is welded to the left end of the second vertical plate extension edge (131) and the second transverse plate (22) located outside the second vertical plate extension edge (131).

2. The lower cross beam structure of a vehicle body water trough according to claim 1, characterized in that: The second transverse plate (22) located outside the right front wheel cover upper reinforcement plate assembly (3) and the left front wheel cover upper reinforcement plate assembly (4) is respectively provided with a shock absorber mounting hole (221) connected to the shock absorber.

3. The lower cross beam structure of a vehicle body water trough according to claim 1, characterized in that: The first vertical plate extension edge (111) and the second vertical plate extension edge (131) are respectively provided with a plurality of external bosses (101) protruding outwards along the length direction.

4. The lower cross beam structure of a vehicle body water trough according to claim 3, characterized in that: A plurality of inner bosses (201) are provided on the first inclined plate (23) corresponding to the outer bosses (101) on the extended edge (111) of the first vertical plate.

5. The lower cross beam structure of a vehicle body water trough according to claim 1, characterized in that: The third vertical plate (21) of the dash panel water trough (2) is extended outwardly to be provided with a connecting plate (211), and the connecting plate (211) is connected to the ventilation cover plate.

6. The lower cross beam structure of a vehicle body water trough according to claim 1, characterized in that: A wire harness insertion hole (222) is provided in the middle of the second transverse plate (22) of the front panel water flow channel (2).

7. The lower cross beam structure of a vehicle body water trough according to claim 1, characterized in that: At least one electrophoresis exhaust hole (223) is provided on the second transverse plate (22) of the front panel water flow channel (2).

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