CN221057471U - Bracket structure for fuel cell engine - Google Patents

Abstract

The utility model provides a bracket structure for a fuel cell engine, belongs to the technical field of fuel cells, and solves the problems that the prior art cannot meet the tail drainage requirement, the hoisting requirement and the installation positioning precision are not high. The bracket structure comprises an engine mounting structure and a whole vehicle mounting structure which are arranged up and down and are fixed into a whole. The two sides of the engine mounting structure are respectively provided with a plurality of fixed points for fixing the bottom of the fuel cell engine and enabling the bottom of the fuel cell engine to be at a set inclination angle, and a plurality of hanging points for hoisting the fuel cell engine and the bracket structure; the whole car mounting structure is in a horizontal placement state, the bottom of the whole car mounting structure is a whole car mounting position surface, and a plurality of whole car end mounting hole sites for fixing the whole car surface are arranged on the car mounting surface. The device can realize flexible adjustment of different vehicle types and different carrying angles, and reduces development period and cost.

Description

Bracket structure for fuel cell engine

Technical Field

The utility model relates to the technical field of fuel cells, in particular to a bracket structure for a fuel cell engine.

Background

Because the fuel cell engine itself has a certain inclination angle when the whole vehicle is installed due to the requirement of tail drainage. At present, the cost of a bracket structure in the field of commercial vehicles is mainly concentrated on section steel tailor welding, and the whole vehicle end framework generally cannot provide an angled mounting beam frame, so that the engine is required to be mounted at an angle. However, the welding deformation of the mounting bracket is relatively large, and because the part mounting precision is poor, if a special angle design is added, the requirement on the dimensional precision of the mounting bracket is higher.

The fuel cell engine and the whole vehicle are respectively arranged at two ends of the bracket structure connection, and in the welding process, the accuracy of the key mounting points cannot be adjusted. If structural design is unreasonable, will lead to the mounting point accuracy adjustment in-process of system side to lead to the fact the association to influence to the mounting point of whole car side, and then lead to whole car mounting point or system mounting point accuracy can't adjust to simultaneously satisfy the precision requirement.

The fuel cell engine has different requirements on the installation angle in different scenes, different vehicle types and different carrying directions. The bracket structure of the current fuel cell engine has no system angle design. For the same fuel cell engine, different installation angles are needed under different application scenes, so that the bracket structure can be greatly changed, and further the development period and the cost are adversely affected. Because there is not engine installation angle's design, can't realize the demand of tail drainage, and set up behind the angle through the suspension support, can increase processing cost and structural complexity.

The existing bracket structure also has no hoisting structure, and when the engine is transported, because the engine integrates a hoisting point, whether the hoisting point strength of the engine itself is at risk or not needs to be analyzed again. Most of the existing engine brackets are integrally spliced and welded, no split welding design is adopted, the accuracy in the process cannot be controlled, and poor installation accuracy is easily caused.

The existing bracket structure is not integrated with the hoisting structure and the packing box fixing structure, so that the strength risk of the system shell and the fixing reliability risk of the packing box are increased.

Disclosure of utility model

In view of the above analysis, the embodiment of the utility model aims to provide a bracket structure for a fuel cell engine, which is used for solving the problems that the prior art cannot meet the tail drainage requirement, the hoisting requirement and the installation positioning precision are not high.

In one aspect, the embodiment of the utility model provides a bracket structure for a fuel cell engine, which comprises an engine mounting structure and a whole vehicle mounting structure which are arranged up and down and are fixed in a whole; wherein,

The two sides of the engine mounting structure are respectively provided with a plurality of fixed points ai, i= … n, n for fixing the bottom of the fuel cell engine and enabling the bottom of the fuel cell engine to be at a set inclination angle, wherein n is the number of fixed points, and a plurality of lifting points bj, j= … m, m for lifting the fuel cell engine and the bracket structure are the number of lifting points;

The whole car mounting structure is in a horizontal placement state, the bottom of the whole car mounting structure is a whole car mounting position surface, a plurality of whole car end mounting hole sites dk for fixing the whole car surface are arranged on the car mounting surface, k= … o is the number of the whole car end mounting hole sites, o is the number of the packing box fixing hole sites cl for the packing box, l= … P is the number of the packing box fixing hole sites.

The beneficial effects of the technical scheme are as follows: the cost of using a suspension bracket is reduced by the angled mounting of the fuel cell engine. The whole vehicle, the fuel cell engine and the 3-layer design are adopted, so that the accuracy of the whole vehicle end installation, the accuracy of the engine end installation and the accuracy control between the engine and the whole vehicle are realized. By means of the independent platform design of the carrying angle of the fuel cell engine, flexible adjustment of different carrying angles of different vehicle types is achieved, and development period and cost are reduced. By integrating the fuel cell engine suspension points on the bracket structure, the problem of strength of the suspension points on the stack housing due to increased weight of the bracket is avoided.

Based on the further improvement of the device, the fixed points and the hanging points on the two sides of the engine mounting structure are symmetrically distributed, and each side of the engine mounting structure is further provided with an engine mounting layer, a transition supporting layer and a whole vehicle fixing layer which are fixedly connected up and down in sequence; wherein,

The engine mounting layer comprises a plurality of engine mounting parts with different sizes and inclined surfaces at the top, the center of the top surface of each engine mounting part corresponds to a fixed point at the bottom of the fuel cell engine, and the top surfaces of all the engine mounting parts at two sides are positioned on the same inclined surface;

the top of the transition supporting layer is a horizontal plane; the middle part of the horizontal plane is fixedly connected with an engine mounting layer, a plurality of lifting lugs for lifting the fuel cell engine are respectively fixed on two sides of the horizontal plane, and the center of each lifting lug corresponds to one lifting point.

Further, in the engine mounting layer, the bottom of each engine mounting part is fixed on the horizontal plane of the top of the transition supporting layer through bolts or screws; and

The engine mounting components on each side of the engine mounting structure are equally spaced.

Further, the whole vehicle fixing layer further comprises a first beam, a second beam and a plurality of longitudinal beams, wherein the first beam and the second beam are arranged in parallel, and the longitudinal beams are arranged between the first beam and the second beam and are connected to the first beam and the second beam; and

The first cross beam, the second cross beam and all the longitudinal beams of the whole vehicle fixing layer are made of profile steel materials and are fixedly connected through splice welding.

Further, the whole vehicle fixing layer and the whole vehicle mounting structure are integrated into a whole.

Furthermore, the first cross beam and the second cross beam are respectively provided with more than 3 whole vehicle end mounting hole sites which are distributed at equal intervals and are used for fixing the surface of the whole vehicle, and at least one longitudinal beam is also provided with whole vehicle end mounting hole sites which are used for fixing the surface of the whole vehicle; and

The distribution of all the mounting hole sites is consistent with the distribution of corresponding hole sites on the whole vehicle.

Further, the transition support layer further includes a first component, a second component, a third component, and a fourth component; wherein,

The top of the first component is a horizontal plane;

The lower parts of the first component, the second component and the fourth component are provided with supporting columns, and the upper parts of the first component, the second component and the fourth component are provided with lifting lugs for lifting the fuel cell engine;

the first component and the second component are provided with engine fixing bracket mounting holes;

The second component and the fourth component are connected through the third component and then connected with the first component to form a transition supporting layer on one side of the engine mounting structure.

Further, the first component, the second component and the fourth component are all splice welding structures of the channel steel and the upright post; and

In the first part, the second part and the fourth part, the distance between the channel steel and the upright post is adjustable.

Further, the number of the engine mounting parts is more than or equal to 2, and the engine mounting parts are bending parts; and

The engine mounting part is provided with a fixing bolt and is connected with the fuel cell engine through the fixing bolt.

Further, the bracket structure also comprises a packaging box fixing sleeve structure for fixing the packaging box and the fuel cell engine; wherein,

The upper part of the packing box fixed sleeve structure is provided with a flange surface structure, the upper part of the flange surface structure is an angle seam welding structure, and the lower part of the flange surface structure is a groove structure formed by plug welding.

The summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the utility model, nor is it intended to be used to limit the scope of the utility model.

Drawings

The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular descriptions of exemplary embodiments of the utility model as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the utility model.

Fig. 1 shows a three-dimensional schematic view of a bracket structure for a fuel cell engine of embodiment 1;

FIG. 2 is a schematic view showing a whole vehicle mounting position on a whole vehicle mounting structure of embodiment 1;

FIG. 3 shows a schematic view of the whole vehicle mounting surface and the engine mounting surface of example 1;

fig. 4 shows a schematic composition diagram of an engine mounting structure of embodiment 2;

fig. 5 shows a schematic structural diagram of the whole vehicle fixing layer of embodiment 2;

FIG. 6 shows a schematic composition of a transition support layer of example 2;

FIG. 7 is a schematic view showing the structure of a first member of the transition support layer of embodiment 2;

FIG. 8 is a schematic view showing the structure of a second member of the transition support layer of embodiment 2;

FIG. 9 is a schematic view showing the structure of a fourth member of the transition support layer of embodiment 2;

Fig. 10 shows a schematic diagram of the relationship between channel steel and columns in the transition support layer of embodiment 2;

FIG. 11 is a schematic view showing the composition of the engine mount layer of example 2;

Fig. 12 shows a schematic view of the structure of the packing box fixing sleeve of example 2.

Reference numerals

A1, a2, a3, a 4-fixed points; b1, b2, b3, b 4-hoisting points; c1, c2, c3, c 4-fixed hole sites of the packing box; d1, d2, d3 and d4 are the whole vehicle end mounting hole sites;

e1, e2, e3, e4, e5, e 6-engine mount bracket mounting holes; a-an engine mounting layer; b-a transition support layer; c-a whole vehicle fixing layer; 1-a first part; 2-

A second component; 3-a third component; 4-fourth part; 5, 6-mounting brackets; 7-welding a bracket; 8-section steel; 9-channel steel; 10-stand columns; 11-pipe sleeve; 12-

An angle seam welding structure; 13-groove structure.

Detailed Description

Embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. While embodiments of the present utility model are illustrated in the drawings, it should be understood that the present utility model may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.

The term "comprising" and variations thereof as used herein means open ended, i.e., "including but not limited to. The term "or" means "and/or" unless specifically stated otherwise. The term "based on" means "based at least in part on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment. The term "another embodiment" means "at least one additional embodiment". The terms "first," "second," and the like, may refer to different or the same object. Other explicit and implicit definitions are also possible below.

The abbreviations and definitions to which the present utility model relates are first described below.

A fuel cell engine: is a chemical device for directly converting chemical energy of fuel into electric energy, also called electrochemical generator.

Pile: is the heart of a fuel cell engine, and the galvanic pile mainly consists of a catalyst, a proton exchange membrane, a gas diffusion layer, a bipolar plate and other structural components such as a sealing piece, an end plate, a current collecting plate and the like.

The bracket structure comprises: the bottom supporting structure of the fuel cell engine is used for fixing the fuel cell engine and being installed with the whole vehicle.

Section steel: is a bar steel with a certain section shape and size, and is one of four kinds of steel (plate, pipe, wire).

Suspension bracket: the function of the suspension bracket is to support and position the engine. The main function is to support the power assembly, reduce the influence of vibration on the whole vehicle, limit the vibration quantity, and play a very great role in the NVH performance of the whole vehicle.

Example 1

In one embodiment of the present utility model, a bracket structure for a fuel cell engine is disclosed, including an engine mounting structure, a whole vehicle mounting structure, which are disposed up and down and fixed in one body, as shown in fig. 1 to 3, but not limited to what is illustrated in fig. 1 to 3.

The two sides of the engine mounting structure are respectively provided with a plurality of fixing points a1, a2, a3, a4 for fixing the bottom of the fuel cell engine and enabling the bottom of the fuel cell engine to be at a set inclination angle (corresponding to the engine mounting surface), and a plurality of hanging points b1, b2, b3, b4 for hanging the fuel cell engine and the bracket structure.

The whole car mounting structure is in a horizontal placement state, the bottom of the whole car mounting structure is a whole car mounting position surface, and a plurality of whole car end mounting hole sites d1, d2, d3 and d4 used for fixing the whole car surface and a plurality of packing box fixing hole sites c1, c2, c3 and c4 used for packing boxes are arranged on the car mounting surface.

As shown in fig. 3, through the above structural design, the engine mounting surface and the whole vehicle mounting surface are mounted at an angle, so that the drainage requirement of the engine system is met.

In the implementation process, the bracket structure can be prepared by adopting low-cost section steel splice welding, and the precision control of the section steel welding process is realized structurally by welding sequencing, so that the independent control of the tolerance of the whole vehicle end and the engine end is realized. By small changes, large frame changes are avoided to realize a multi-angle bracket structure. The engine hanging point is integrated on the bracket and also used as a coating hanging point, so that the risk of the strength of the hanging point of the engine shell is reduced. Compared with the prior art, the bracket structure for the fuel cell engine reduces the cost of using the suspension bracket through the angular carrying of the fuel cell engine. The whole vehicle, the fuel cell engine and the 3-layer design are adopted, so that the accuracy of the whole vehicle end installation, the accuracy of the engine end installation and the accuracy control between the engine and the whole vehicle are realized. By means of the independent platform design of the carrying angle of the fuel cell engine, flexible adjustment of different carrying angles of different vehicle types is achieved, and development period and cost are reduced. By integrating the fuel cell engine suspension points on the bracket structure, the problem of strength of the suspension points on the stack housing due to increased weight of the bracket is avoided.

Example 2

The improvement is based on embodiment 1, and fixed points and hanging points on two sides of the engine mounting structure are symmetrically distributed, and each side of the engine mounting structure is further provided with an engine mounting layer A, a transition supporting layer B and a whole vehicle fixing layer C which are fixedly connected up and down in sequence, as shown in fig. 4.

The engine mounting layer A is used for realizing angle carrying and tolerance adjustment of the material battery engine on the layer and comprises a plurality of engine mounting components with different sizes and inclined surfaces at the top, the center of the top surface of each engine mounting component corresponds to a fixed point at the bottom of the fuel battery engine, and the top surfaces of all the engine mounting components at two sides are positioned on the same inclined surface.

The transition supporting layer B is used for bearing the support of the engine and the tolerance control between the whole vehicle and the engine, and the top of the transition supporting layer B is a horizontal plane; the middle part of the horizontal plane is fixedly connected with an engine mounting layer A, a plurality of lifting lugs for lifting the fuel cell engine are respectively fixed on two sides of the horizontal plane, and the center of each lifting lug corresponds to one lifting point.

And the whole vehicle fixing layer C is used for realizing the requirement of whole vehicle end installation.

The whole bracket is a bending piece and a section steel, and the design goal of low cost is realized.

Preferably, in the engine mounting layer a, the bottom of each engine mounting component is fixed on the horizontal plane of the top of the transition support layer B by bolts or screws. And, the engine mounting parts of each side of the engine mounting structure are all equidistantly distributed.

Preferably, as shown in fig. 5, the whole vehicle fixing layer C further includes a first beam, a second beam, and a plurality of longitudinal beams disposed between the first beam and the second beam and connected to the first beam and the second beam. And the first cross beam, the second cross beam and all the longitudinal beams of the whole vehicle fixing layer C are made of profile steel materials and are connected and fixed through splice welding.

The whole car fixed layer C is used for determining a hole site for fixing the whole car, three whole car end installation hole sites are arranged on one side of the whole car fixed layer C, the whole car end installation hole sites d1, d2 and d3 are arranged on the first cross beam, the whole car end installation hole sites d4, d5 and d6 are arranged on the second cross beam, the precision of the three hole sites on one side is guaranteed through CNC or laser cutting, the three holes on one side of the whole car are also formed in one beam and matched with the whole car hole site, and the whole car fixed layer C is welded in sequence and locks the installation precision of the whole car end.

Preferably, the whole vehicle fixing layer C is integrated with the whole vehicle mounting structure.

Preferably, the first cross beam and the second cross beam are respectively provided with more than 3 whole vehicle end mounting hole sites which are distributed at equal intervals and used for fixing the whole vehicle surface, and at least one longitudinal beam is also provided with whole vehicle end mounting hole sites which are used for fixing the whole vehicle surface. And the distribution of all the mounting hole sites is consistent with the distribution of corresponding hole sites on the whole vehicle.

The transition supporting layer B is a transition supporting layer between the fuel cell engine and the whole vehicle and is used for absorbing the tolerance of two ends.

Preferably, as illustrated in fig. 6, the transition support layer B further comprises a first part 1, a second part 2, a third part 3 and a fourth part 4. The first part 1, the second part 2, the third part 3 and the fourth part 4 are split into four parts.

Wherein the top of the first part 1 is a horizontal plane as shown in fig. 7.

The lower parts of the first part 1, the second part 2 and the fourth part 4 are provided with support columns, and the upper parts are provided with lifting lugs for lifting the fuel cell engine, as shown in fig. 7 to 9. The first component 1 and the second component 2 are provided with engine fixing bracket mounting holes e1, e2, e3, e4, e5 and e6. The second component 2 and the fourth component 4 are connected through the third component 3 and then connected with the first component 1 to form a transition supporting layer on one side of the engine mounting structure.

During preparation, after the whole vehicle fixing layer C is welded, the transition supporting layer B falls on the whole vehicle fixing layer C, tolerance adjustment can be carried out in the front-back left-right direction of the whole vehicle fixing layer C, the first component 1 and the second component 2 provide engine fixing support mounting holes for the engine fixing layer A, such as e1, e2, e3 and e4 in fig. 7, such as e5 and e6 in fig. 8, the hole site precision requirements are higher, however, because the third component 3 is arranged between the second component 2 and the fourth component 4, if the fourth component 4 is also perforated, the tolerance between the second component 2 and the fourth component 4 is difficult to control, so that the position precision of the first component 1 and the second component 2 is guaranteed, the position of the fourth component 4 is released, and the system mounting support at the upper part of the fourth component 4 adopts a welding scheme for absorbing the position tolerance of the fourth component 4.

Preferably, as shown in fig. 10, the first component 1, the second component 2 and the fourth component 4 are all splice welded structures of channel 9 and upright 10. In the first member 1, the second member 2, and the fourth member 4, the distance between the channel 9 and the column 10 is adjustable.

Preferably, the number of the engine mounting parts is equal to or more than 2, and the engine mounting parts are all bending pieces. And the engine mounting part is provided with a fixing bolt, and the fuel cell engine is connected through the fixing bolt.

The bracket structure also needs tolerance absorption in the height direction, so the first component 1, the second component 2 and the fourth component 4 are splice welding structures of the channel steel 9 and the upright post 10, and the dimension in the height direction can be unidirectionally adjusted. As shown in fig. 10, the channel steel 9 and the upright post 10 can be separated by a certain distance, the channel steel 9 is upward, the upright post 10 is downward moved, and the height precision of the structure is ensured on the basis of welding feasibility.

As shown in fig. 11, the engine mounting layer a is a fuel cell system mounting angle control layer, and includes mounting brackets 5,6 and a welding bracket 7, wherein the brackets are all bending parts, which can be realized by less cost, and simultaneously control the accuracy of the mounting brackets 5,6, and release the tolerance through the welding bracket 7, so as to ensure the process realizability.

For different use scenes and different use vehicle types, the angles of the engines relative to the whole vehicle are different, in order to reduce development period and development and verification cost, the engine mounting layer A is independently used as a mounting angle adjusting layer, and the platformized multi-scene application can be realized by adjusting the bending shapes and angles of the mounting brackets 5 and 6 and the welding bracket 7.

In addition, the hanging points of the conventional fuel cell engine are arranged on the pile housing, if the bracket is added, the stress of the pile housing is increased, and if the re-analysis strength is also increased, the development time is also increased, so that the hanging points are integrated on the bracket, such as b1, b2, b3 and b4 of fig. 1.

Preferably, the bracket structure further includes a case fixing sleeve structure for fixing the case and the fuel cell engine, as shown in fig. 12. The upper part of the packing box fixed sleeve structure is provided with a flange surface structure, the upper part of the flange surface structure is provided with an angle seam welding structure 12, the lower part of the flange surface structure is provided with a groove structure 13 _. formed by plug welding, and the packing box fixed sleeve structure is prepared by welding profile steel 8 and a pipe sleeve 11. When logistics is carried out, the packing box is required to be fixed with the engine, the fixing point can support the whole engine, the strength is ensured, the process is convenient to install, a novel packing box fixing sleeve structure is added, the guiding effect can be achieved by the relative section steel open holes when screws are penetrated, meanwhile, the flange surface structure is added on the upper part, the upper part is prevented from being separated from the packing box after being welded, the upper part is welded by an angle joint, and the groove on the lower part is plug welding for ensuring the welding strength.

Compared with the prior art, the bracket structure for the fuel cell engine has the following beneficial effects:

1. the fuel cell engine is carried at an angle based on the sectional material and the bending piece in a tailor-welding mode, and the processing cost of the suspension bracket is reduced.

2. Through carrying out three layering designs with whole car, engine and between the two, can change the angle demand under the different application scenario into the independent platform development of A layer, reduce development cycle.

3. By integrating the engine suspension points on the brackets, the risk of strength of the stack housing due to increased weight of the brackets can be reduced.

4. Through increasing a new commodity circulation packing box fixed knot constructs, make and beat the screw and operate more convenient, and flange face structure makes the engine prevent deviate from, and is fixed more convenient, and the transportation reliability is higher.

The foregoing description of embodiments of the utility model has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or the improvement of the prior art, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (10)

1. The bracket structure for the fuel cell engine is characterized by comprising an engine mounting structure and a whole vehicle mounting structure which are arranged up and down and are fixed into a whole; wherein,

The two sides of the engine mounting structure are respectively provided with a plurality of fixed points ai, i= … n, n for fixing the bottom of the fuel cell engine and enabling the bottom of the fuel cell engine to be at a set inclination angle, wherein n is the number of fixed points, and a plurality of lifting points bj, j= … m, m for lifting the fuel cell engine and the bracket structure are the number of lifting points;

The whole car mounting structure is in a horizontal placement state, the bottom of the whole car mounting structure is a whole car mounting position surface, a plurality of whole car end mounting hole sites dk for fixing the whole car surface are arranged on the car mounting surface, k= … o is the number of the whole car end mounting hole sites, o is the number of the packing box fixing hole sites cl for the packing box, l= … P is the number of the packing box fixing hole sites.

2. The bracket structure for the fuel cell engine according to claim 1, wherein the fixing points and the hanging points on both sides of the engine mounting structure are symmetrically distributed, and each side of the engine mounting structure is further provided with an engine mounting layer (a), a transition supporting layer (B) and a whole vehicle fixing layer (C) which are fixedly connected up and down in sequence; wherein,

The engine mounting layer (A) comprises a plurality of engine mounting parts with different sizes and inclined surfaces at the top, the center of the top surface of each engine mounting part corresponds to a fixed point at the bottom of the fuel cell engine, and the top surfaces of all the engine mounting parts at two sides are positioned on the same inclined surface;

The top of the transition supporting layer (B) is a horizontal plane; the middle part of the horizontal plane is fixedly connected with an engine mounting layer (A), a plurality of lifting lugs for lifting the fuel cell engine are respectively fixed on two sides of the horizontal plane, and the center of each lifting lug corresponds to one lifting point.

3. The bracket structure for a fuel cell engine according to claim 2, wherein in the engine mount layer (a), the bottom of each engine mount member is fixed on the horizontal plane of the top of the transition support layer (B) by bolts or screws; and

The engine mounting components on each side of the engine mounting structure are equally spaced.

4. A bracket structure for a fuel cell engine according to any one of claims 1-3, characterized in that the whole vehicle fixing layer (C) further comprises a first beam, a second beam arranged in parallel, and a plurality of longitudinal beams arranged between and connected to the first beam, the second beam; and

The first cross beam, the second cross beam and all the longitudinal beams of the whole vehicle fixing layer (C) are made of profile steel materials and are connected and fixed through splice welding.

5. The bracket structure for a fuel cell engine according to claim 4, wherein the whole vehicle fixing layer (C) is integrated with the whole vehicle mounting structure.

6. The bracket structure for the fuel cell engine according to claim 5, wherein the first cross beam and the second cross beam are respectively provided with more than 3 vehicle end mounting holes which are distributed at equal intervals and are used for fixing the surface of the whole vehicle, and at least one longitudinal beam is also provided with the vehicle end mounting holes which are used for fixing the surface of the whole vehicle; and

The distribution of all the mounting hole sites is consistent with the distribution of corresponding hole sites on the whole vehicle.

7. The bracket structure for a fuel cell engine according to claim 5 or 6, characterized in that the transition support layer (B) further comprises a first component (1), a second component (2), a third component (3) and a fourth component (4); wherein,

The top of the first component (1) is a horizontal plane;

The lower parts of the first component (1), the second component (2) and the fourth component (4) are provided with supporting columns, and the upper parts of the first component, the second component and the fourth component are provided with lifting lugs for lifting the fuel cell engine;

The first component (1) and the second component (2) are provided with engine fixing bracket mounting holes;

The second component (2) and the fourth component (4) are connected through the third component (3) and then connected with the first component (1) to form a transition supporting layer on one side of the engine mounting structure.

8. The bracket structure for a fuel cell engine according to claim 7, wherein the first member (1), the second member (2) and the fourth member (4) are each a splice-welded structure of a channel steel (9) and a pillar (10); and

In the first component (1), the second component (2) and the fourth component (4), the distance between the channel steel (9) and the upright post (10) is adjustable.

9. The bracket structure for a fuel cell engine according to any one of claims 2, 3, 5, 6, 8, wherein the number of engine mounting parts is not less than 2, and both are bending pieces; and

The engine mounting part is provided with a fixing bolt and is connected with the fuel cell engine through the fixing bolt.

10. The bracket structure for a fuel cell engine according to claim 9, further comprising a case fixing collar structure for fixing the case and the fuel cell engine; wherein,

The upper part of the packing box fixed sleeve structure is provided with a flange surface structure, the upper part of the flange surface structure is provided with an angle seam welding structure (12), and the lower part of the flange surface structure is provided with a groove structure (13) formed by plug welding.