Auxiliary frame structure suitable for double-wishbone suspension of new energy truck

Abstract

The utility model relates to an auxiliary frame structure suitable for a new energy truck double-fork-arm suspension, which comprises a cross beam component, a longitudinal beam component, a steering gear mounting bracket and a suspension swing arm, a longitudinal beam is arranged on the cross beam component to form an auxiliary frame assembly, the auxiliary frame assembly is connected with a frame through the longitudinal beam, the cross beam component and the longitudinal beam component are used for being connected with the suspension swing arm, and the steering gear mounting bracket is arranged on the suspension swing arm. The steering gear mounting support is used for mounting a steering gear assembly, and the suspension swing arm assembly and the steering gear mounting support are arranged on the auxiliary frame assembly and used for bearing a steering system. The whole structure is high in bearing capacity and good in stability, the rigidity of a vehicle body is greatly improved after the device is connected with a frame, and the device is good in torsion resistance and driving control.

Description

Technical Field

[0001] The utility model relates to the technical field of truck front suspensions, and in particular to a subframe structure suitable for a double-wishbone suspension of a new energy truck. Background Art

[0002] Currently, the front suspension of new energy mini trucks on the market mainly uses leaf spring suspension. Leaf spring suspension is made of a series of elastically deformable steel plates bound together by high-strength alloy materials. It has a simple structure and strong load-bearing capacity, but it has poor driving control and comfort, and the suspension is heavy. The following are the problems with using leaf spring suspension:

[0003] Handling and comfort: Due to the characteristics of leaf spring suspension, driving handling and comfort are relatively poor.

[0004] Range: Suspension weight affects vehicle energy efficiency, which in turn reduces range.

[0005] Braking problem: Some models have brake deviation phenomenon, which may be related to improper suspension design or adjustment.

[0006] And as the vehicle ages, the NVH becomes worse and worse, the driving feel is poor, the body deforms greatly during a collision, and the driver's safety cannot be guaranteed.

[0007] Therefore, there is an urgent need to design a subframe structure for a truck double wishbone suspension that significantly improves handling and comfort, has good load capacity, is light in weight, has a simple structure, and has low development costs. Utility Model Content

[0008] In view of this, the utility model provides a subframe structure suitable for a double wishbone suspension of a new energy truck.

[0009] The utility model provides a subframe structure suitable for a double wishbone suspension of a new energy truck, which adopts the following technical solutions:

[0010] A subframe structure suitable for a double wishbone suspension of a new energy truck includes a crossbeam assembly, a longitudinal beam assembly, a steering gear mounting bracket and a suspension swing arm. The longitudinal beam is arranged on the crossbeam assembly to form a subframe assembly. The subframe assembly is connected to the frame through the longitudinal beam. The crossbeam assembly and the longitudinal beam assembly are used to connect to the suspension swing arm. The steering gear mounting bracket is used to install the steering gear assembly. The suspension swing arm assembly and the steering gear mounting bracket are arranged on the subframe assembly to carry the steering system.

[0011] Optionally, the crossbeam assembly includes an upper plate and a lower plate, and the upper plate and the lower plate are closed and connected to form a buckling structure.

[0012] Optionally, the crossbeam assembly includes a front crossbeam and a rear crossbeam correspondingly arranged along the front and rear of the frame, and the front crossbeam and the rear crossbeam each have an upper plate and a lower plate respectively.

[0013] Optionally, the steering gear mounting bracket includes a right steering gear mounting bracket and a left steering gear mounting bracket arranged on the crossbeam assembly, and the right steering gear mounting bracket and the left steering gear mounting bracket are provided with a fixing part 1, and the fixing part 1 is used to connect with the steering gear assembly.

[0014] Optionally, the suspension swing arm assembly includes a swing arm rear point reinforcement plate, a front swing arm reinforcement inner plate and a front swing arm reinforcement outer plate. The swing arm rear point reinforcement plate is arranged on the lower plate of the front cross beam, the front swing arm reinforcement inner plate is arranged on the left longitudinal beam and the upper plate of the front cross beam, and the front swing arm reinforcement outer plate is arranged on the front swing arm reinforcement inner plate.

[0015] Optionally, the suspension swing arm assembly includes a suspension lower swing arm, and the suspension lower swing arm and the steering gear assembly are both arranged on the subframe for carrying the steering system.

[0016] Optionally, a locating pin is provided on the sub-frame assembly, and the locating pin is used to locate with a locating hole of the frame beam.

[0017] Optionally, a strip-shaped hole is provided on the longitudinal beam assembly, and a second fixing member is provided on the sub-frame assembly, and the second fixing member passes through the strip-shaped hole and is connected to the frame.

[0018] Optionally, the sub-frame is provided with an auxiliary bracket for connecting with the frame.

[0019] In summary, the utility model includes at least one of the following beneficial technical effects: the overall structure has strong bearing capacity and good stability, and after being connected to the frame, the rigidity of the vehicle body is greatly improved, the torsion resistance is good, and the driving control is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a top view of the subframe of an embodiment of the utility model;

[0022] Figure 2 This is a bottom view of the auxiliary frame of an embodiment of the utility model;

[0023] Figure 3 It is a side view of the auxiliary frame of an embodiment of the present utility model.

[0024] Explanation of the accompanying symbols: 1. Longitudinal beam; 2. Front swing arm reinforcement inner plate; 3. Front cross beam upper plate; 4. Auxiliary bracket; 5. Swing arm rear point reinforcement inner plate; 6. Right steering gear mounting bracket; 7. Left steering gear mounting bracket; 8. Front cross beam lower plate; 9. Swing arm rear point reinforcement plate; 10. Front swing arm reinforcement outer plate; 11. Locating pin. DETAILED DESCRIPTION

[0025] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present invention.

[0026] The following is combined with Figure 1-3 The utility model is described in further detail.

[0027] An embodiment of the utility model discloses a subframe structure suitable for a double-wishbone suspension of a new energy truck.

[0028] Reference Figure 1-Figure 3 A subframe structure suitable for a double-wishbone suspension in new energy trucks includes a crossbeam assembly, a longitudinal beam 1 assembly, a steering gear mounting bracket, and a suspension swing arm. The longitudinal beam 1 is mounted on the crossbeam assembly to form a subframe assembly, which is connected to the vehicle frame via the longitudinal beam 1. The crossbeam assembly and the longitudinal beam 1 assembly are used to connect to the suspension swing arm. The steering gear mounting bracket is used to mount the steering gear assembly. The suspension swing arm assembly and the steering gear mounting bracket are mounted on the subframe assembly to support the steering system. The overall structure has strong load-bearing capacity and excellent stability. When connected to the vehicle frame, it significantly improves vehicle body rigidity, provides excellent torsional resistance, and enhances driving control.

[0029] The crossbeam assembly includes an upper plate and a lower plate, which are sealed and connected to form a snap-fit ​​structure. Specifically, the upper and lower plates are welded together to form a snap-fit ​​structure, making the overall structure more stable and compact, improving the support effect of the vehicle body, enhancing the rigidity and modal properties of the vehicle body, and also improving the collision safety performance of the entire vehicle, optimizing the body structure, and enhancing the stability and comfort of the entire vehicle.

[0030] The crossbeam assembly includes front and rear crossbeams, positioned along the front and rear sides of the vehicle frame. Each of these crossbeams is equipped with upper and lower plates, including a front crossbeam upper plate 3, a front crossbeam lower plate 8, and a rear crossbeam upper plate and a rear crossbeam lower plate. The front and rear crossbeam upper plates utilize a common mold, while the front and rear crossbeam lower plates share the same structure. The front and rear crossbeams are primarily connected to the suspension arms, which comprise upper and lower arms, for reliable structural support. In this embodiment, a double wishbone suspension is employed. The front and rear crossbeams form a Y- or A-shaped arrangement with the upper and lower arms, providing stable support.

[0031] The steering gear mounting bracket includes a right steering gear mounting bracket 6 and a left steering gear mounting bracket 7, which are mounted on the crossbeam assembly. Each of the right and left steering gear mounting brackets 6 and 7 is provided with a fixing member 1, which is used to connect to the steering gear assembly. The fixing member 1 utilizes bolts. The right and left steering gear mounting brackets 6 and 7 are bilaterally symmetrical and connected to the steering gear assembly via bolts and nuts. The suspension arm assembly includes a suspension lower arm. The suspension lower arm and the steering gear assembly are both mounted on the subframe to support the steering system. The suspension lower arm and steering gear are mounted on the subframe, simultaneously supporting the steering system, significantly blocking vibration and noise, improving vehicle comfort.

[0032] The suspension swing arm assembly includes a swing arm rear reinforcement plate 9, a front swing arm reinforcement inner plate 2, and a front swing arm reinforcement outer plate 10. The swing arm rear reinforcement plate 9 is mounted on the front crossbeam lower plate 8, the front swing arm reinforcement inner plate 2 is mounted on the left longitudinal beam 1 and the front crossbeam upper plate 3, and the front swing arm reinforcement outer plate 10 is mounted on the front swing arm reinforcement inner plate 2. The swing arm rear reinforcement plate 9 is an L-shaped reinforcement plate at the rear of the swing arm. The front swing arm reinforcement inner plate 2, the front swing arm reinforcement outer plate 10, the swing arm rear reinforcement inner plate 5, the swing arm rear reinforcement plate 9, and other brackets are universal and welded together with the crossbeam assembly and the longitudinal beam 1 assembly to form a frame-type subframe. This universal bracket significantly reduces mold development costs. All sheet metal is made of high-strength steel, resulting in a stable structure, strong overall load-bearing capacity of the subframe, excellent collision safety, and excellent vibration and noise isolation. Platform-based development is convenient, the structure is simple, and development costs are low.

[0033] The sub-frame assembly is provided with a locating pin 11, which is used to locate with the locating hole of the frame beam. The locating pin 11 matches and locates with the locating hole of the frame beam, and the installation is precise.

[0034] A strip hole is opened on the longitudinal beam 1 component, and a fixing part 2 is provided on the sub-frame assembly, and the fixing part 2 passes through the strip hole and is connected to the frame. Specifically, the fixing part 2 adopts a bolt.

[0035] The auxiliary frame is provided with an auxiliary bracket 4 for connecting with the frame. Specifically, the auxiliary bracket 4 is respectively provided on the left longitudinal beam 1 and the right longitudinal beam 1.

[0036] The front crossbeam and the rear crossbeam of the utility model are universal, and the left longitudinal beam 1 and the right longitudinal beam 1 are universal, which greatly reduces the development cost.

[0037] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the scope of protection of the present utility model.

Claims

1. A subframe structure suitable for a double wishbone suspension of a new energy truck, characterized by: It includes a crossbeam assembly, a longitudinal beam assembly, a steering gear mounting bracket and a suspension swing arm. The longitudinal beam is arranged on the crossbeam assembly to form a subframe assembly. The subframe assembly is connected to the frame through the longitudinal beam. The crossbeam assembly and the longitudinal beam assembly are used to connect with the suspension swing arm. The steering gear mounting bracket is used to install the steering gear assembly. The suspension swing arm assembly and the steering gear mounting bracket are arranged on the subframe assembly to carry the steering system.

2. The subframe structure suitable for the double wishbone suspension of a new energy truck according to claim 1 is characterized in that: The crossbeam assembly includes an upper plate and a lower plate, and the upper plate and the lower plate are closed and connected to form a buckling structure.

3. The subframe structure suitable for the double wishbone suspension of a new energy truck according to claim 2 is characterized in that: The crossbeam assembly includes a front crossbeam and a rear crossbeam which are correspondingly arranged along the front and rear sides of the vehicle frame. The front crossbeam and the rear crossbeam each have an upper plate and a lower plate.

4. The subframe structure suitable for the double wishbone suspension of a new energy truck according to claim 1 is characterized in that: The steering gear mounting bracket includes a right steering gear mounting bracket and a left steering gear mounting bracket arranged on the crossbeam assembly. The right steering gear mounting bracket and the left steering gear mounting bracket are provided with a fixing part 1, and the fixing part 1 is used to connect with the steering gear assembly.

5. The subframe structure suitable for the double wishbone suspension of a new energy truck according to claim 3 is characterized in that: The suspension swing arm assembly includes a swing arm rear point reinforcement plate, a front swing arm reinforcement inner plate and a front swing arm reinforcement outer plate. The swing arm rear point reinforcement plate is arranged on the lower plate of the front cross beam, the front swing arm reinforcement inner plate is arranged on the left longitudinal beam and the upper plate of the front cross beam, and the front swing arm reinforcement outer plate is arranged on the front swing arm reinforcement inner plate.

6. The subframe structure suitable for the double wishbone suspension of a new energy truck according to claim 1 is characterized in that: The suspension arm assembly includes a lower suspension arm. The lower suspension arm and the steering gear assembly are both arranged on the subframe for carrying the steering system.

7. The subframe structure suitable for the double wishbone suspension of a new energy truck according to claim 1 is characterized in that: The sub-frame assembly is provided with a positioning pin, which is used to locate with the positioning hole of the frame beam.

8. The subframe structure suitable for the double wishbone suspension of a new energy truck according to claim 1 is characterized in that: A strip-shaped hole is provided on the longitudinal beam component, and a second fixing member is provided on the sub-frame assembly. The second fixing member passes through the strip-shaped hole and is connected to the frame.

9. The subframe structure suitable for the double wishbone suspension of a new energy truck according to claim 1, characterized in that: The auxiliary frame is provided with an auxiliary bracket for connecting with the frame.

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