CN116331351A - Front auxiliary frame structure of automobile - Google Patents

Abstract

The invention discloses an automobile front auxiliary frame structure which comprises an auxiliary frame lower body, an auxiliary frame upper body and an automobile body connecting plate, wherein the auxiliary frame lower body and the auxiliary frame upper body are correspondingly connected up and down, the automobile body connecting plate comprises a left automobile body connecting plate and a right automobile body connecting plate which are correspondingly arranged, the automobile front auxiliary frame structure also comprises a penetrating reinforcement beam, the penetrating reinforcement beam is arranged between the auxiliary frame lower body and the auxiliary frame upper body, and the end part of the penetrating reinforcement beam is connected with the automobile body connecting plate on the corresponding side. The front auxiliary frame of the automobile is reasonable in structural design, the overall weight of the front auxiliary frame can be effectively reduced by arranging the middle penetrating type reinforcing beam, the rigidity and the mode of the front auxiliary frame can be improved, the weight of the front auxiliary frame can be reduced by 30% -50% compared with that of the traditional front auxiliary frame, and the cost is reduced.

Description

A kind of automobile front auxiliary frame structure

technical field

The invention relates to the technical field of automobiles, in particular to an automobile front auxiliary frame structure.

Background technique

At present, in order to improve the stiffness and modal of the front sub-frame and improve the fatigue strength of the sub-frame, these performances are mostly achieved by increasing the thickness of the upper and lower plates of the front sub-frame; the current automobile requires energy saving, emission reduction, and lightweight In the background, it is very inappropriate; therefore, it is a difficult problem in the design of this field to ensure that the performance of the front subframe remains unchanged while reducing the weight of the subframe and reducing the development cost.

A kind of automobile front sub-frame disclosed in Chinese patent CN213892655U comprises a front sub-frame upper plate, a front sub-frame lower plate, a mounting tower, a front swing arm mounting bracket, a suspension mounting bracket, a stabilizer bar mounting bracket and a steering wheel. The front subframe upper plate is connected with the front subframe lower plate to form the main body of the front subframe of the car; the front swing arm mounting bracket, suspension mounting bracket, stabilizer bar mounting bracket and steering gear mounting bracket are all set on On the main body of the front sub-frame of the car, the installation tower is a separate molded part, which is welded on the main body of the front sub-frame of the car; the installation tower and the upper and lower plates of the front sub-frame of the car are separated into separate parts. When the plate thickness of the installation tower meets the strength requirements, it is only necessary to adjust the plate thickness of the installation tower separately, and the plate thickness of the upper plate of the sub-frame does not need to be adjusted.

Contents of the invention

Aiming at the deficiencies in the prior art, the present invention provides a front sub-frame structure of an automobile to achieve the purpose of reducing the weight of the front sub-frame while improving the performance of the sub-frame.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

The front sub-frame structure of the automobile comprises a lower body of the sub-frame, an upper body of the sub-frame and a connecting plate of the vehicle body. The left body connecting plate and the right body connecting plate also include a penetrating reinforcing beam. The penetrating reinforcing beam is arranged between the lower body of the subframe and the upper body of the subframe, and the end of the penetrating reinforcing beam is connected to the body on the corresponding side. board connected.

further:

The lower part of the penetrating reinforcing beam is connected with the lower body of the sub-frame, and the upper part of the penetrating reinforcing beam is connected with the upper body of the sub-frame.

A suspension mounting plate is provided between the lower body of the sub-frame and the upper body of the sub-frame, and the penetrating reinforcing beam is connected with the suspension mounting plate.

The lower body of the sub-frame is provided with a rear body installation sleeve, the body connecting plate is provided with a front body installation sleeve, a reinforcing plate is provided between the lower body of the sub-frame and the upper body of the sub-frame, and one end of the reinforcement plate It is connected with the installation sleeve of the rear body, and the other end of the reinforcement plate is connected with the connection plate of the body.

The penetrating reinforcing beam is welded to the lower body of the sub-frame, the upper body of the sub-frame and the connecting plate of the vehicle body.

The penetrating reinforcing beam is a left and right penetrating integral beam structure.

The penetrating reinforcing beam is an arc beam, and the suspension mounting plate is located inside the arc beam.

The suspension installation plate includes a suspension installation lower plate and a suspension installation upper plate correspondingly arranged up and down, the suspension installation lower plate is connected to the lower body of the sub-frame by welding, and the suspension installation upper plate is connected to the upper body of the sub-frame by welding , the suspended mounting upper plate is connected with the penetrating reinforcing beam.

The upper and lower edges of the reinforcing plate are provided with flange structures for welding connection.

The lower body of the sub-frame is provided with two corresponding steering gear installation threaded pipes, one side of the steering gear installation threaded pipe is located between the through reinforcement beam and one side of the reinforcement plate, and the steering gear installation thread pipe and the penetration reinforcement beam There are stiffeners in between.

Compared with the prior art, the present invention has the following advantages:

The structural design of the front sub-frame of the car is reasonable. By setting the middle through-type reinforcing beam, the overall weight of the front sub-frame can be effectively reduced, and the stiffness and mode of the front sub-frame can be improved. Compared with the weight of the traditional front sub-frame, the weight can be reduced by 30. % to 50%, reducing the cost.

Description of drawings

The following is a brief description of the content expressed in the drawings of this manual and the marks in the drawings:

Fig. 1 is a schematic diagram of the structure of the front sub-frame of the present invention.

Fig. 2 is a schematic diagram of the inner side of the upper plate of the front sub-frame of the present invention.

Fig. 3 is a schematic diagram of the inner side of the lower plate of the front sub-frame of the present invention.

In the picture:

1. Penetrating reinforcement beam, 2. Mounting upper plate, 3. Rib plate, 4. Rear body installation casing, 5. Left reinforcement plate behind the swing arm, 6. Steering machine installation threaded pipe, 7. Left body Connect the upper plate, 8. Front body mounting sleeve, 9. Left front swing arm mounting plate, 10. Suspension mounting lower plate, 11. Suspension mounting threaded pipe, 12. Sub-frame lower body, 13. Projection welding nut Ⅰ, 14. Welding nuts, 15. The left body is connected to the lower plate, 16. The right reinforcement plate is clicked behind the swing arm, 17. The right body is connected to the upper plate, 18. The right body is connected to the lower plate, 19. The right front swing arm mounting plate, 20. Convex Weld nut II, 21. The upper body of the auxiliary frame.

Detailed ways

The specific implementation manner of the present invention will be described in further detail below by describing the embodiments with reference to the accompanying drawings.

As shown in Figures 1 to 3, the front subframe structure of the automobile includes a subframe lower body 21, a subframe upper body 12, a body connecting plate, a suspension mounting plate and a penetrating reinforcing beam 1; the subframe lower body and The upper body of the sub-frame is welded up and down correspondingly to form a hollow structure. The body connection plate includes the left body connection plate and the right body connection plate, and the penetrating reinforcement beam is arranged between the sub-frame lower body and the sub-frame upper body. , the end of the penetrating reinforcement beam is connected with the body connection plate on the corresponding side.

The lower body of the sub-frame is provided with a rear body installation sleeve 4, the body connection plate is provided with a front body installation sleeve 8, a reinforcing plate is arranged between the lower body of the sub-frame and the upper body of the sub-frame, and one end of the reinforcing plate is connected to the rear body. The body mounting sleeve is connected, and the other end of the reinforcing plate is connected with the body connecting plate.

The present invention can effectively reduce the overall weight of the front sub-frame by setting the middle through-type reinforcing beam and the front and rear through-type reinforcement plates, and can improve the stiffness and mode of the front sub-frame. Compared with the weight of the traditional front sub-frame, the weight can be reduced by 30%~ 50%, reducing costs.

The penetrating reinforcing beam is a left and right penetrating integral beam structure, the lower part of the penetrating reinforcing beam is welded to the lower body of the sub-frame, the upper part of the penetrating reinforcing beam is connected to the upper body of the sub-frame, and the left front swing arm is installed at the bottom of the corresponding left body connecting plate Plate 9, corresponding to the right front swing arm mounting plate 19 is provided at the bottom of the right body connecting plate; The body connects the lower plate 18, runs through the left end of the reinforcement beam and links to each other with the left body connection upper plate, and runs through the right end of the reinforcement beam to connect with the right body connection upper plate.

A suspension mounting plate is provided between the lower body of the subframe and the upper body of the subframe, and is connected to the suspension mounting plate through the reinforcing beam; the suspension mounting plate includes a corresponding suspension mounting upper plate 2 and a suspension mounting lower plate 10, The lower plate of the suspension installation is welded to the lower body of the sub-frame, the upper plate of the suspension installation is connected to the upper body of the sub-frame by welding, the upper plate of the suspension installation is connected to the penetrating reinforcement beam, and the upper plate of the suspension installation is provided with a suspension installation thread The pipe 11 has a stable and reliable structure; and the upper body of the sub-frame is provided with a projection welding nut I13, a welding nut and a projection welding nut II20, which are integrated and have a simple structure.

The penetrating reinforcement beam is welded to the lower body of the subframe, the upper body of the subframe, the connecting plate of the body and the mounting plate of the suspension; the lower body of the subframe is provided with two corresponding threaded tubes for steering gear installation, and one side steers The threaded tube for machine installation is located between the through reinforcement beam and one side of the reinforcement plate, and the reinforcement plate 3 is provided between the threaded pipe for installation of the steering machine and the through reinforcement beam, so the structure is stable and reliable; The board is located on the inner side of the curved beam and has a compact structure.

The upper and lower edges of the reinforcing plate are provided with flange structures for welding connection. The reinforcing plate is a penetrating reinforcing plate. corresponding settings.

The present invention forms a novel front sub-frame structure by setting through reinforcing beams and through-type reinforcing plates, which improves the performance of the front sub-frame and reduces the weight of the front sub-frame. The weight of the similar sub-frame is about 25 kg. The structural design of the present invention The sub-frame is about 12.5 kg; the bending stiffness and torsional stiffness of the front sub-frame and the first-order and second-order free modes have been improved.

The foregoing is only an illustration of preferred embodiments of the present invention, and the above technical features can be combined arbitrarily to form multiple embodiments of the present invention.

The present invention has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods, as long as various insubstantial improvements are made using the ideas and technical solutions of the present invention, or the present invention will be If the concept and technical solutions of the present invention are directly applied to other occasions, they all fall within the protection scope of the present invention.

Claims (10)

1. A front sub-frame structure of an automobile, comprising a sub-frame lower body, a sub-frame upper body and a vehicle body connection plate, the sub-frame lower body and the sub-frame upper body are connected up and down correspondingly, and the vehicle body connection plate It includes correspondingly arranged left and right body connecting plates, and is characterized in that it also includes a penetrating reinforcing beam, which is arranged between the lower body of the sub-frame and the upper body of the sub-frame, and runs through the end of the reinforcing beam. connected to the body connecting plate on the corresponding side. 2. The automobile front sub-frame structure according to claim 1, wherein the lower part of the penetrating reinforcing beam is connected with the lower body of the sub-frame, and the upper part of the penetrating reinforcing beam is connected with the upper body of the sub-frame. 3. The automobile front sub-frame structure according to claim 1, characterized in that: a suspension mounting plate is provided between the sub-frame lower body and the sub-frame upper body, and the penetrating reinforcing beam and the suspension mounting plate connected. 4. The structure of the front sub-frame of the automobile as claimed in claim 1, characterized in that: the lower body of the sub-frame is provided with a rear body installation sleeve, the vehicle body connecting plate is provided with a front body installation sleeve, and the auxiliary vehicle A reinforcing plate is arranged between the lower body of the frame and the upper body of the auxiliary frame, one end of the reinforcing plate is connected with the installation sleeve of the rear body, and the other end of the reinforcing plate is connected with the connecting plate of the vehicle body. 5 . The automobile front subframe structure according to claim 2 , wherein the penetrating reinforcing beam is welded to the lower body of the subframe, the upper body of the subframe and the connecting plate of the vehicle body. 6. The automobile front sub-frame structure according to claim 2, characterized in that: the penetrating reinforcing beam is a left and right penetrating integral beam structure. 7. The automobile front sub-frame structure according to claim 3, wherein the penetrating reinforcing beam is an arc beam, and the suspension mounting plate is located inside the arc beam. 8. The automobile front sub-frame structure as claimed in claim 3, characterized in that: the suspension mounting plate comprises a suspension mounting lower plate and a suspension mounting upper plate correspondingly arranged up and down, and the suspension mounting lower plate is connected with the auxiliary frame. The lower body of the frame is welded and connected, the upper plate of the suspension installation is connected with the upper body of the sub-frame by welding, and the upper plate of the suspension installation is connected with the penetrating reinforcing beam. 9. The automobile front sub-frame structure according to claim 4, characterized in that: the upper and lower edges of the reinforcing plate are provided with flanging structures for welding connection. 10. The automobile front sub-frame structure according to claim 4, characterized in that: the lower body of the sub-frame is provided with two corresponding steering gear mounting threaded pipes, and one side of the steering gear mounting threaded pipe is located at the penetrating reinforcement beam There is a reinforcing rib plate between the reinforcing plate on one side and the threaded pipe for installing the steering gear and the penetrating reinforcing beam.

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