High-power hydrogen fuel cell tractor frame

Abstract

The utility model relates to a high-power hydrogen fuel cell tractor frame which comprises a main frame formed by a front frame, a middle frame and a rear frame in an integrated mode, and a front auxiliary frame used for installing a front steering gear is arranged on the side wall of one side of the front frame. The two sides of a front axle of the front frame extend in the width direction to be provided with suspension installation bases used for installing a front independent suspension, and an electric frame is vertically arranged between the front frame and the middle frame of the main frame. A vertical steering gear and an integral axle of a traditional tractor are changed into a horizontal front steering gear and a front independent suspension through the front auxiliary frame and the suspension mounting seat, and the width of the front frame is increased through the front auxiliary frame and the suspension mounting seat, so that the space above the front axle is completely emptied; therefore, space is provided for a fuel cell system and a hot air channel above the fuel cell system, and the problem that the height of the fuel cell system is too high, so that the floor of a cab is raised is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen fuel vehicles, and more specifically to a frame of a high-power hydrogen fuel cell tractor. Background Art

[0002] At present, most hydrogen fuel cell heavy trucks on the market are modified based on fuel vehicles. Due to the long-range demand of heavy trucks, their layout mostly adopts the form of rear hydrogen cylinders, side-mounted power batteries and radiators, and mid-mounted motor gearboxes. However, for the existing fuel cell heavy trucks with rear hydrogen cylinders, the size of the hydrogen cylinder frame is limited by the occupied length in the vehicle width direction, resulting in a small hydrogen storage capacity of the hydrogen storage system. In addition, since the front end of its frame is a motor radiator, and both sides of the frame under the rear gas cylinders are stack radiators, the water circuit of the motor cooling system is relatively long; and the two side stack radiators exhaust air into the frame, and the electrical components behind the radiator fans will be in a state of being heated by hot air, especially the air compressor, battery cooling system, etc., which has an adverse impact on the overall vehicle performance and component durability.

[0003] Therefore, the applicant provides a chassis of a high-power hydrogen fuel cell tractor, including a frame, a hydrogen storage system, a fuel cell system, a power battery and high- and low-voltage accessories. In this solution, the fuel cell system is arranged on the front frame, the power battery is arranged on the middle frame, and the hydrogen storage system is arranged on the left and right outsides of the middle frame, so as to avoid the limitation that the size of the hydrogen storage cylinder is limited by the occupied length in the vehicle width direction, and greatly improve the hydrogen storage capacity of the hydrogen storage system; at the same time, in this solution, an electrical frame is vertically arranged between the front frame and the middle frame, and by arranging a high-voltage fan in the electrical frame and adopting a high-position air guiding method, the heat of the fuel cell system is guided upward and discharged into the air outside the vehicle head, so as to avoid hot air eroding the electrical components of the middle and rear frames.

[0004] However, the basic frame of the existing fuel vehicle generally adopts an integral bridge and vertical steering gear layout scheme, and more jumping space needs to be reserved above the front axle, resulting in limited space above the front axle for installing the fuel cell, and there is not enough space above the fuel cell to provide an air guiding channel for the high-voltage fan. In order to achieve the high-position air guiding method, it is necessary to raise the height of the cab floor to provide enough space above the front axle. However, raising the cab floor height not only makes the space in the cab narrower, restricts the layout of electrical components, but also makes it inconvenient for the driver to get on and off the vehicle and restricts activities inside the vehicle. Summary of the Utility Model

[0005] Therefore, the utility model provides a frame of a high-power hydrogen fuel cell tractor to solve the above problems.

[0006] The utility model adopts the following technical solutions:

[0007] A frame for a high-power hydrogen fuel cell tractor, comprising a main frame integrally composed of a front frame, a middle frame, and a rear frame. On one side wall of the front frame of the main frame, there is a front sub-frame for installing a front steering gear. On both sides of the front axle of the front frame, suspension mounting seats for installing front independent suspensions are arranged along the width direction. A vertical electrical frame is provided between the front frame and the middle frame of the main frame.

[0008] Further, the main frame is composed of two main longitudinal beams on the left and right and several cross beams, and the cross beams are spaced and erected between the two main longitudinal beams.

[0009] Further, the front sub-frame is located in front of the suspension mounting seat. The front sub-frame includes a rectangular main frame for installing a front steering gear. One side wall of the main frame is locked to the front frame, and a steering rocker arm support for connecting a steering rocker arm is provided at the rear side of the main frame.

[0010] Preferably, a front anti-collision beam is further provided on the front side of the main frame.

[0011] Preferably, both the rectangular main frame and the steering rocker arm support are composed of several rectangular tubes and several processed plate parts.

[0012] Further, the suspension mounting seat includes two L-shaped main mounting seats, two lower beam enclosures, and a beam reinforcement beam. The two L-shaped main mounting seats are respectively fixedly connected to the left and right sides of the front frame. The two lower beam enclosures are spaced and erected at the bottom of the front frame. The two ends of the beam reinforcement beam are respectively fixedly connected to the two lower beam enclosures.

[0013] Further, a frame mounting seat for installing an electrical frame is provided between the front frame and the middle frame.

[0014] Further, the electrical frame is a rectangular frame. A fan mounting frame for installing a high-pressure fan is provided at the upper part of the electrical frame. The lower part of the electrical frame is composed of several layers of trusses for installing electrical components from top to bottom.

[0015] Further, the middle frame is provided with a battery mounting frame.

[0016] From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:

[0017] The utility model changes the vertical steering gear layout scheme of the traditional hydrogen fuel cell tractor into a horizontal front steering gear layout scheme by arranging a front sub-frame and a suspension mounting seat on the side wall in the width direction of the front frame, and changes the overall bridge layout scheme of the traditional hydrogen fuel cell tractor into a front independent suspension scheme; the front sub-frame arranged on one side in the width direction of the front frame can provide an installation space for the horizontal front steering gear, thus avoiding occupying the upper space of the front frame. At the same time, the suspension mounting seat can increase the frame width at the connection position of the front suspension, so that the space above the front axle is completely emptied, so as to reduce the ground clearance of the assembly parts at the front suspension position, so as to provide space for the fuel cell system and the hot air channel above it, so as to avoid the problem that the floor of the cab is raised due to the excessive height of the fuel cell system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. is a schematic top view of the tractor chassis adopting the utility model.

[0019] Figure 2 is Figure 1 exploded schematic view of..

[0020] Figure 3 FIG. is a schematic structural view of the utility model.

[0021] Figure 4 FIG. is a top view of the utility model.

[0022] Figure 5 FIG. is a front view of the utility model.

[0023] Wherein, the reference numerals in the figure are: frame 10, front frame 11, middle frame 12, rear frame 13; front sub-frame 14, rectangular main frame 141, front anti-collision beam 142, steering rocker arm support 143, suspension mounting seat 15, L-shaped main mounting seat 151, lower beam 152, beam reinforcement beam 153, frame mounting seat 16, hydrogen storage system 20; fuel cell system 30, power battery 40, electrical frame 50, fan mounting frame 51, truss 52, front steering gear 61, front independent suspension 62, electric drive axle 63, composite eight-airbag suspension 64, high-pressure fan 70. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following describes the specific embodiments of the embodiments of the utility model with reference to the drawings.

[0025] Refer to Figure 1 and Figure 2, A high-power hydrogen fuel cell tractor chassis, including a frame 10, a hydrogen storage system 20, a fuel cell system 30, a power battery 40, and high and low voltage accessories (not shown in the figure). In this embodiment, with the direction of the vehicle head 80 as the front and the rear of the vehicle tail as the rear, the frame 10 consists of a front frame 11, a middle frame 12, and a rear frame 13. An electrical frame 50 is provided between the front frame 11 and the middle frame 12. The electrical frame 50 is vertically installed on the frame 10. The front part of the tractor is arranged on the front frame 11, and the rear side of the vehicle head 80 of the tractor extends to the electrical frame 50. A front steering gear 61 and a front independent suspension 62 are provided on the front frame 11, and an electric drive axle 63 and a composite eight-airbag suspension 64 are provided on the rear frame 13.

[0026] Referring to Figure 1 and Figure 2 , the fuel cell system 30 is arranged on the front frame 11, the power battery 40 is arranged on the middle frame 12. The middle frame 12 is provided with a battery installation frame 121. The hydrogen storage system 20 is arranged on the left and right outer sides of the middle frame 12. The high and low voltage accessories are arranged on the electrical frame 50. At the same time, a high-voltage fan 70 for dissipating heat from the fuel cell system 30 is also provided on the electrical frame 50. The power battery 40 is electrically connected to the high and low voltage accessories. The fuel cell system 30 is connected to the hydrogen storage system 20 by pipelines and is electrically connected to the power battery 40 and the high and low voltage accessories respectively.

[0027] Specifically, referring to Figures 3 to 5 , the frame 10 of the high-power hydrogen fuel cell tractor is a main frame integrally composed of a front frame 11, a middle frame 12, and a rear frame 13, which is composed of two main longitudinal beams on the left and right and several cross beams. The cross beams are spaced and arranged between the two main longitudinal beams. The overall width of the main frame is basically the same as that of the main frame of the existing fuel tractors of the same model. However, in the present utility model, a front sub-frame 14 for installing the front steering gear 61 is provided on one side wall of the front frame 11 of the main frame, and suspension mounting seats 15 for installing the front independent suspension 62 are arranged along the width direction on both sides of the front axle of the front frame 11.

[0028] Among them, referring to Figures 3 to 5 , the front sub-frame 14 is located in front of the suspension mounting seat 15. The front sub-frame 14 includes a rectangular main frame 141 for installing the front steering gear 61. One side wall of the main frame is locked to the front frame 11 by bolts. A front anti-collision beam 142 is also provided on the front side of the main frame, and a steering rocker arm support 143 for connecting the steering rocker arm is provided on the rear side of the main frame. The main frame, the front anti-collision beam 142, and the steering rocker arm support 143 of the front sub-frame 14 are all composed of several rectangular tubes and several processed plate parts through bolts and / or welding.

[0029] The utility model changes the traditional vertical steering gear layout scheme of a hydrogen fuel cell tractor into a horizontal front steering gear 61 layout scheme by arranging a front subframe 14 on the side wall in the width direction of the front frame 11. The front subframe 14 arranged on one side in the width direction of the front frame 11 can provide an installation space for the horizontal front steering gear 61, thus avoiding occupying the upper space of the front frame 11.

[0030] Referring to Figures 3 to 5 , the suspension mounting seat 15 includes two L-shaped main mounting seats 151, two lower beam enclosures 152 and a beam reinforcement 153. The two L-shaped main mounting seats 151 are respectively fixedly connected to the left and right sides of the front frame 11. The two lower beam enclosures 152 are spaced and mounted on the bottom of the front frame 11. The two ends of the beam reinforcement 153 are respectively fixedly connected to the two lower beam enclosures 152. Thus, the L-shaped main mounting seats 151, the lower beam enclosures 152, the beam reinforcement 153 and the front frame 11 are connected to form a stable and reliable mounting structure. In this embodiment, the front independent suspension 62 can adopt a front independent air spring suspension, and the L-shaped main mounting seat 151 can be used as a mounting support for the external swing front suspension airbag.

[0031] In the utility model, by arranging the suspension mounting seats 15 extending along the width direction on both sides of the front axle of the front frame 11, the width of the frame at the front suspension connection position is increased, so that the space above the front axle is completely emptied, thereby reducing the ground clearance of the assembly parts at the front suspension position, and providing space for the fuel cell system 30 and the hot air duct above it, so as to avoid the problem that the height of the fuel cell system 30 is too high, resulting in the elevation of the cab floor.

[0032] Referring to Figures 3 to 5 , a frame mounting seat 16 for mounting an electrical frame 50 is provided between the front frame 11 and the middle frame 12. The electrical frame 50 is a rectangular frame. A fan mounting frame 51 for mounting a high-voltage fan 70 is arranged on the upper part of the electrical frame 50. In this embodiment, there are two fan mounting frames 51. The lower part of the electrical frame 50 is composed of several layers of trusses 52 for mounting electrical components from top to bottom.

[0033] The above is only the specific implementation manner of the utility model, but the design concept of the utility model is not limited thereto. Any non-substantive modification made to the utility model using this concept shall fall within the scope of infringement of the protection of the utility model.

Claims

1. A high-power hydrogen fuel cell tractor frame, comprising a main frame integrally composed of a front frame, a middle frame and a rear frame, characterized in that: A front subframe for mounting a front steering gear is disposed on one side wall of the front frame of the main frame, suspension mounting seats for mounting a front independent suspension are extended along the width direction on both sides of the front axle of the front frame, and an electrical frame is vertically disposed between the front frame and the middle frame of the main frame.

2. According to claim 1, a high-power hydrogen fuel cell tractor frame is characterized in that: The main frame is composed of two left and right main longitudinal beams and a plurality of cross beams, and the cross beams are arranged between the two main longitudinal beams at intervals.

3. The high-power hydrogen fuel cell tractor frame according to claim 1, characterized in that: The front subframe is located in front of the suspension mounting seat, and the front subframe includes a rectangular main frame for mounting a front steering gear, a side wall of one side of the main frame is locked to the front frame, and a steering rocker arm support for connecting a steering rocker arm is provided on the rear side of the main frame.

4. The high-power hydrogen fuel cell tractor frame according to claim 3 is characterized by: A front anti-collision beam is also provided on the front side of the main frame.

5. The high-power hydrogen fuel cell tractor frame according to claim 3, characterized in that: The rectangular main frame and the steering rocker arm support are both composed of a plurality of rectangular tubes and a plurality of processed plate parts.

6. The high-power hydrogen fuel cell tractor frame according to claim 1, characterized in that: The suspension mounting seat includes two L-shaped main mounting seats, two lower cladding beams and a cladding beam reinforcement beam. The two L-shaped main mounting seats are respectively fixedly connected to the left and right sides of the front frame, the two lower cladding beams are spaced apart and arranged at the bottom of the front frame, and the two ends of the cladding beam reinforcement beam are respectively fixedly connected to the two lower cladding beams.

7. The high-power hydrogen fuel cell tractor frame according to claim 1, characterized in that: A frame mounting seat for mounting an electrical frame is provided between the front frame and the middle frame.

8. The high-power hydrogen fuel cell tractor frame according to claim 1, characterized in that: The electrical frame is a rectangular frame, the upper part of which is provided with a fan installation frame for installing a high-voltage fan, and the lower part of which is composed of several layers of trusses from top to bottom for installing electrical components.

9. The high-power hydrogen fuel cell tractor frame according to claim 1, characterized in that: The middle frame is provided with a battery mounting frame.

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