CN204197031U - Subframe and vehicle - Google Patents

Abstract

The utility model provides an auxiliary frame and a vehicle, comprising a closed bracket formed by sequentially fixed left lower longitudinal pipe beam, front cross beam, right lower longitudinal pipe beam and rear cross beam. Pipe beams, the upper right longitudinal pipe beams are arranged above the right lower longitudinal pipe beams, the left and right lower longitudinal pipe beams pass through the through holes of the front cross beam, and the joints between the left and right lower longitudinal pipe beams and the front cross beam are all provided with reinforced plate. In the auxiliary frame of the utility model, the left and right lower longitudinal tube beams pass through the through holes of the front beam, so that the two lower longitudinal tube beams will not move laterally relative to the front beam even under a relatively large collision force, thereby The stability of the sub-frame is enhanced; the setting of the reinforcing plate can effectively enhance the lateral rigidity of the front beam, so as to ensure that the outer side of the through hole will not be damaged and deformed in advance due to excessive force.

Description

Subframe and vehicle

technical field

The utility model relates to the technical field of automobile suspension, in particular to an auxiliary frame and a vehicle using the same.

Background technique

The subframe is an important part that connects the engine, the automobile suspension rod system, and the body, and now the semi-frame subframe and the full-frame subframe are widely used. The full-frame sub-frame is mainly composed of plane stamping and welding structure and three-dimensional truss structure with upper and lower layers. The sub-frame of three-dimensional truss structure must meet the assembly requirements of the final drive and The safety of the vehicle under the action of a large collision force also needs to meet the NVH performance requirements of the vehicle. The structure of the sub-frame affects the NVH performance of the vehicle to a certain extent. Therefore, the role played by the sub-frame in the vehicle is also very important, and in the prior art, the longitudinal tube beams of the sub-frame are only lapped on the front and rear cross beams, and the engine is suspended on the longitudinal tube beams, while Within the safe collision range, the stability of the connection between the longitudinal tube beam and the cross beam and the transverse stiffness of the cross beam cannot be guaranteed, thus affecting the NVH performance of the entire subframe and further affecting the NVH performance of the entire vehicle.

Utility model content

In view of this, the utility model aims to propose a sub-frame to enhance the stability of the connection between the longitudinal tube beam and the cross beam and the lateral rigidity of the cross beam.

In order to achieve the above object, the technical solution of the utility model is achieved in that:

A sub-frame, comprising a closed bracket formed by a left lower longitudinal beam, a front crossbeam, a right lower longitudinal pipe beam and a rear crossbeam fixedly connected from the beginning to the end in sequence, and the left upper longitudinal pipe beam is connected above the left lower longitudinal pipe beam , the top of the right lower longitudinal pipe beam is connected with the right upper longitudinal pipe beam, the left lower longitudinal pipe beam and the right lower longitudinal pipe beam pass through the through hole of the front cross beam, and the left lower longitudinal pipe beam and the Reinforcing plates are provided at the joints between the right lower longitudinal tube beam and the front cross beam.

Further, the reinforcement plate is in close contact with the front beam, and the reinforcement plate is welded to the outer part of the through hole of the front beam.

Further, a left mounting bracket for installing the engine is welded between the left lower longitudinal beam and the left upper longitudinal beam, and a left mounting bracket for installing the engine is welded between the right lower longitudinal beam and the right upper longitudinal beam. Right mounting bracket.

Further, the left mounting bracket and the right mounting bracket both include a support plate and a support body fixedly connected together, the support plate is fixedly connected to the left upper longitudinal pipe beam or the right upper longitudinal pipe beam, the The supporting body is fixedly connected with the left lower longitudinal pipe beam or the right lower longitudinal pipe beam.

Further, the support body is a circumferentially closed tubular shell structure.

Further, the lower end of the support body of the right mounting bracket is vertically welded to the right lower longitudinal tube beam.

Further, the length of the support plate along the length direction of the upper left longitudinal tube beam or the upper right longitudinal tube beam is not less than 50 mm.

Further, both the front beam and the rear beam are circumferentially closed cylindrical shell structures, and the rear beam is a column with a semicircular cross-section formed by welding the bottom plate and the arc plate. shell structure.

Further, the lower left longitudinal beam, the lower right longitudinal beam, the upper left longitudinal beam and the upper right longitudinal beam are all provided with energy-absorbing grooves.

Compared with the prior art, the auxiliary frame of the utility model has the following advantages:

In the auxiliary frame described in the utility model, the two ends of the left upper longitudinal beam, the left lower longitudinal beam, the right upper longitudinal beam and the right lower longitudinal beam are respectively fixedly connected with the front beam and the rear beam, thereby forming an upper, The three-dimensional truss-type sub-frame on the lower two floors, in which the left lower longitudinal tube beam and the right lower longitudinal tube beam pass through the through hole of the front cross member. This structure can make the two lower longitudinal tube beams It will not move laterally relative to the front cross beam, thereby enhancing the connection stability of the connection between the two lower longitudinal tube beams and the front cross beam; The reinforcing plate provided at the connection between the two lower longitudinal tube beams and the front cross beam can effectively enhance the lateral stiffness of the front cross beam, thereby ensuring that the outside of the through hole on the front cross beam will not be damaged and deformed in advance due to excessive force.

Another object of the present utility model is to propose a vehicle, which includes an engine and the above-mentioned sub-frame, and the engine is mounted on the sub-frame.

Due to the better stability of the sub-frame and the greater rigidity of the beam, the vehicle can improve the NVH performance of the sub-frame under the action of a safety collision force, thereby improving the NVH performance of the entire vehicle.

Description of drawings

The accompanying drawings constituting a part of the utility model are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model, and do not constitute improper limitations to the utility model. In the attached picture:

Fig. 1 is the front view of the auxiliary frame described in Embodiment 1 of the utility model;

Fig. 2 is a top view of the sub-frame described in Embodiment 1 of the utility model in Fig. 1;

Fig. 3 is a left side view of the sub-frame described in Embodiment 1 of the utility model in Fig. 1;

Fig. 4 is a partially enlarged schematic diagram of the sub-frame A described in Fig. 2 in Embodiment 1 of the utility model;

Fig. 5 is a schematic diagram of the left mounting bracket described in Embodiment 1 of the utility model in Fig. 1;

Fig. 6 is a schematic diagram of the right mounting bracket described in Embodiment 1 of the utility model in Fig. 1;

Fig. 7 is a schematic diagram of the structure of the rear beam of the utility model embodiment 1 in Fig. 1;

Fig. 8 is a B-B sectional view of the rear beam in Fig. 7 .

Explanation of reference signs:

1-left mounting bracket, 2-left upper longitudinal beam, 3-left connecting body, 4-left lower longitudinal beam, 5-front beam,

6-right lower longitudinal beam, 7-right connecting body, 8-right upper longitudinal beam, 9-right mounting bracket, 10-right connecting arm,

11-rear beam, 12-left connecting arm, 13-reinforcing plate;

101-left support plate, 102-left support body;

201-left energy-absorbing groove;

501-hole;

801-right energy-absorbing tank;

901-right support plate, 902-right support body.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

In addition, in the description of the present utility model, the outer portion of the through hole on the front cross beam refers to the extension direction of the front cross beam to both ends, which is just opposite to the direction to the center itself.

It should be understood that the orientations or positional relationships indicated by the terms "front", "rear", "left", "right", "upper", "lower" etc. are based on the orientation or positional relationships shown in the accompanying drawings, and only It is for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the referred device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the utility model.

The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

Embodiment one

This embodiment is a sub-frame, as shown in Figures 1-3, comprising a left lower longitudinal tube beam 4, a front cross beam 5, a right lower longitudinal tube beam 6 and a rear cross beam 11 which are fixedly connected first and last in sequence. Closed support, the upper left longitudinal pipe beam 4 is connected with the left upper longitudinal pipe beam 2, the upper right longitudinal pipe beam 6 is connected with the right upper longitudinal pipe beam 8, the left lower longitudinal pipe beam 4 and the right lower longitudinal pipe beam 6 are both worn Through the through hole 501 of the front beam 5 , and at the joints of the left lower longitudinal tube beam 4 and the right lower longitudinal tube beam 6 and the front beam 5 , a reinforcing plate 13 is provided.

In the sub-frame in this embodiment, the two ends of the left upper longitudinal beam 2, the left lower longitudinal beam 4, the right upper longitudinal beam 8 and the right lower longitudinal beam 6 are respectively fixedly connected with the front beam 5 and the rear beam 11, for example : welded into an integrated structure, thereby generating a three-dimensional truss structure of upper and lower layers, wherein the left lower longitudinal tube beam 4 and the right lower longitudinal tube beam 6 all pass through the through hole 501 of the front cross beam 5, this kind of structure can make The two lower longitudinal tube beams will not move laterally relative to the front cross beam 5 even under a relatively large collision force, thereby enhancing the connection stability of the connection between the two lower longitudinal tube beams and the front cross beam 5; when the vehicle is collided, Since the outer direction of the through hole 501 on the front beam 5 is under a greater force, the reinforcement plate 13 provided at the connection between the two lower longitudinal tube beams and the front beam 5 can not only enhance the strength of the connection, but also effectively strengthen the front beam 5. The lateral rigidity, thereby guaranteeing that the outer side of the through hole 501 of the front beam 5 will not be damaged and deformed in advance due to excessive force, and the transverse bending deformation of the entire front beam 5 will not be ensured.

In this embodiment, the left connector 3 and the right connector 7 are respectively welded upwards at the two ends of the front crossbeam 5, and the left connecting arm 12 and the right connecting arm 10 (as shown in FIG. ), the left upper longitudinal beam 2 is fixedly connected between the end of the left connector 3 and the end of the left connecting arm 12, and the right upper longitudinal beam 8 is fixedly connected between the end of the right connector 7 and the end of the right connecting arm 10, In this way, the lower left longitudinal beam 4 and the upper left longitudinal beam 2 can be connected together, and the lower right longitudinal beam 6 and the upper right longitudinal beam 8 can be connected together.

As shown in FIG. 4 , the reinforcing plate 13 is closely attached to the front beam 5 , and the reinforcing plate 13 is welded to the outer portion of the through hole 501 of the front beam 5 . That is, the reinforcement plate 13 is only welded at the position where the force is greater. Such arrangement can not only enhance the transverse strength and rigidity of the front beam 5, but also save materials, reduce weight, and reduce costs.

As shown in FIGS. 1-3 , a left mounting bracket 1 is welded between the left lower longitudinal beam 4 and the left upper longitudinal beam 2 , and a right mounting bracket 9 is welded between the right lower longitudinal beam 6 and the right upper longitudinal beam 8 . The two mounting brackets are used to install the engine, so that the engine is suspended on the sub-frame through the two mounting brackets, and the structure is simple and easy to realize.

Wherein, the left mounting bracket 1 includes a left support plate 101 and a left support body 102 for fixedly connecting the engine, as shown in FIG. 5 ; the right mounting bracket 9 includes a right support plate 901 and a right support body 902 for fixedly connecting the engine, As shown in Figure 6; wherein, the left support body 102 and the right support body 902 are a kind of circumferentially closed tubular shell structure, in this embodiment, the left support body 102 and the right support body 902 are all made of a flat plate and The cross section surrounded by the U-shaped plates welded on both sides of the flat plate is an approximately rectangular shell structure, and the left support body 102 is welded with the left support plate 101, and the right support body 902 is welded with the right support plate 901; the left support body The plate 101 is welded on the left upper longitudinal beam 2, the right support plate 901 is welded on the right upper longitudinal beam 8, the left support body 102 is welded on the left lower longitudinal beam 4, and the right support body 902 is welded on the right lower longitudinal beam 6 . Such a support structure not only meets the strength and rigidity requirements, but also has the advantages of easy processing and light weight.

As shown in Figure 6, the support body of the right mounting bracket 9, that is, the lower end of the right support body 902 is vertically welded on the right lower longitudinal tube beam 6, so that it is beneficial to strengthen the engine suspension installation point along the length direction of the two beams. dynamic stiffness.

In order to enhance the strength of the engine installation point, the two support bodies can be welded first, and then welded to the two longitudinal beams respectively.

As shown in Fig. 1, Fig. 5 and Fig. 6, the length values of the left support plate 101 along the left upper longitudinal pipe beam 2 and the right support plate 901 along the length direction of the right upper longitudinal pipe beam 8 are not less than 50 mm, and the length values are too small to reach The dynamic stiffness requirement along the length direction of the left upper longitudinal tube beam 2 or the right upper longitudinal tube beam 8 to the engine installation point, so in this embodiment, for example, this length value is selected as 61 mm, or other dimensions.

In this embodiment, both the front beam 5 and the rear beam 11 are circumferentially closed cylindrical shell structures, and the rear beam 11 is a cylindrical shell with a semicircular cross-section formed by welding the bottom plate and the arc plate. body structure, as shown in Figure 7 and Figure 8, the rear beam 11 of this structure can be fastened together with the bottom plate and the arc plate first, and then welded. In addition, the cross-sectional area of the rear beam 11 of this cross-sectional shape is the largest , so that the rigidity of the rear beam 11 along its length can be maximized; the front beam 5 is a cylindrical shell structure with a rectangular cross-section formed by welding the bottom plate and the U-shaped plate. The two beams can be made into a hollow shell structure by hydroforming, so that the entire subframe has the advantages of light weight, simple structure, and high bending and torsional rigidity of the overall structure, especially to enhance the strength along the length direction of the two beams. stiffness.

In order to absorb the vibration energy under a large collision, as shown in Figure 1, the left lower longitudinal beam 4, the right lower longitudinal beam 6, the left upper longitudinal beam 2 and the right upper longitudinal beam 8 are all equipped with energy-absorbing grooves, such as the present embodiment In the example, the left upper longitudinal beam 2 is provided with a left energy-absorbing groove 201, and the right upper longitudinal beam 8 is provided with a right energy-absorbing groove 801. Of course, the two lower longitudinal beams are also provided with energy-absorbing grooves, but they are not shown in the figure. display only. When the vehicle is subjected to a large collision force, the energy-absorbing groove will absorb the vibration energy first, before other parts of the sub-frame collapse, so as to avoid damage to important parts, avoid transmission of collision force to the cab, and ensure driving personal safety of personnel.

As shown in FIGS. 1-3 , the ends of the joints between the left upper longitudinal beam 2 and the right upper longitudinal beam 8 and the rear cross beam 11 are bent downward and outward.

It should be noted that, in the subframe in this embodiment, the parts and components are fixedly connected by welding, and other fixed connection methods can also be used, such as threaded connection or interference fit, etc., of course , and can also be processed in one piece.

Embodiment two

The present embodiment is a kind of vehicle, comprises engine and above-mentioned sub-frame, and engine is installed on the left installation bracket 1 (specifically installed on the left support plate 101) and the right installation bracket 9 (specifically installed on the right support plate 101) of sub-frame board 901).

Since the sub-frame in the first embodiment has good stability and the beam has relatively high rigidity, the NVH performance of the sub-frame can be improved under the action of the safety collision force of the vehicle, thereby improving the NVH performance of the whole vehicle.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (10)

1. A sub-frame, comprising a closed bracket formed by the left lower longitudinal tube beam (4), the front cross beam (5), the right lower longitudinal tube beam (6) and the rear cross beam (11) fixedly connected in sequence, the A left upper longitudinal pipe beam (2) is connected above the left lower longitudinal pipe beam (4), and a right upper longitudinal pipe beam (8) is connected above the right lower longitudinal pipe beam (6). It is characterized in that the left lower longitudinal pipe Both the beam (4) and the right lower longitudinal tube beam (6) pass through the through hole (501) of the front cross member (5), and the left lower longitudinal tube beam (4) and the right lower longitudinal tube beam (6) Reinforcing plates (13) are provided at the joints with the front beam (5). 2. The auxiliary frame according to claim 1, characterized in that, the reinforcement plate (13) is closely attached to the front beam (5), and the reinforcement plate (13) is welded to the front beam (5) the outer part of the through hole (501). 3. The sub-frame according to claim 2, characterized in that a left mounting bracket (1) for installing the engine is welded between the left lower longitudinal beam (4) and the left upper longitudinal beam (2) , a right mounting bracket (9) for installing the engine is welded between the right lower longitudinal beam (6) and the right upper longitudinal beam (8). 4. The auxiliary frame according to claim 3, characterized in that, the left mounting bracket (1) and the right mounting bracket (9) both include a support plate and a support body fixedly connected together, and the support The plate is fixedly connected with the left upper longitudinal beam (2) or the right upper longitudinal beam (8), and the support body is fixed with the left lower longitudinal beam (4) or the right lower longitudinal beam (6) connect. 5. The sub-frame according to claim 4, wherein the supporting body is a circumferentially closed tubular shell structure. 6. The auxiliary frame according to claim 5, characterized in that, the lower end of the support body of the right mounting bracket (9) is vertically welded to the right lower longitudinal tube beam (6). 7. The sub-frame according to claim 5, characterized in that, the length of the support plate along the length direction of the left upper longitudinal tube beam (2) or the right upper longitudinal tube beam (8) is not less than 50 mm. 8. The auxiliary frame according to claim 6 or 7, characterized in that, both the front beam (5) and the rear beam (11) are circumferentially closed cylindrical shell structures, and the rear beam ( 11) A cylindrical shell structure with a semicircular cross-section formed by welding the bottom plate and the arc plate. 9. The auxiliary frame according to any one of claims 1-7, characterized in that, the left lower longitudinal tube beam (4), the right lower longitudinal tube beam (6), the left upper longitudinal tube beam ( 1) and the upper right longitudinal beam (8) are provided with energy-absorbing grooves. 10. A vehicle, comprising an engine, characterized in that it is further provided with a sub-frame according to any one of claims 1-9, and the engine is mounted on the sub-frame.