CN221273209U - Frame for automobile - Google Patents

Abstract

The utility model relates to a frame for an automobile, which comprises a frame module and a main frame which are integrally cast, wherein the frame module comprises a left longitudinal beam, a front cross beam, a right longitudinal beam and a rear cross beam; the main frame comprises a front left main frame, a rear left main frame, a front right main frame and a rear right main frame; the front side and the rear side of the right longitudinal beam are respectively connected with the front side right main frame and the rear side right main frame; a left rectangular concave cavity structure is arranged at the joint of the left longitudinal beam and the front left main frame, and a right rectangular concave cavity structure is arranged at the joint of the right longitudinal beam and the front right main frame; the length directions of the left rectangular concave cavity structure and the right rectangular concave cavity structure extend along the length direction of the longitudinal beam respectively, and reinforcing ribs are arranged in each rectangular concave cavity structure. According to the utility model, the requirements of effectively improving the strength of the front auxiliary frame are met in a limited space range through the two rectangular concave cavity structures, and meanwhile, the stress concentration is avoided, so that the driving safety is further improved.

Description

Frame for automobile

Technical Field

The utility model relates to the technical field of automobile parts, in particular to a frame with a frame module and a main frame, wherein the frame module can be configured as a front auxiliary frame of an automobile chassis.

Background

The front auxiliary frame serves as an important part of the whole automobile, plays a role in fixing a suspension system, supporting an engine and an automobile body, bears acting forces generated by various composite working conditions such as starting, accelerating, braking and steering in the running process of the automobile, and also needs to resist ground impact caused by complex road conditions, so that the front auxiliary frame plays an important role in the reliability, driving safety and comfort of the automobile.

The wheel jump test is an extreme working condition for evaluating whether the frame is qualified or not, at the moment, the wheel jump limit bears the impact force which is 6-8 times of the full-load weight of the vehicle, the strength and rigidity requirements of the aluminum-magnesium casting alloy structure are difficult to reach, and particularly, the joint positions of the aluminum-magnesium casting and the front side and rear side main frames often have fracture and damage caused by insufficient strength and concentrated stress. For the problems of insufficient strength and stress concentration of the front side and the rear side of the magnesium aluminum alloy casting main frame connection position, the structure of the nearby reinforcing ribs is usually only increased or changed, but the structure is influenced by the structural space position and the casting process, the effect is limited, and a good mode for thoroughly solving the problem is not available at present.

Therefore, a frame structure as a front auxiliary frame is needed, and the technical problem that the structural strength and rigidity of the frame structure connected with each part of the front side main frame and the rear side main frame are insufficient on the basis of ensuring the light weight effect is solved.

Disclosure of utility model

The utility model aims to provide a vehicle frame so as to solve the technical problems.

In order to achieve the above object, the present utility model provides the following technical solutions:

The utility model provides a frame for an automobile, which comprises a frame module and a main frame, wherein the frame module is formed by integral casting, the main frame is fixed with the frame module, the frame module comprises two longitudinal beams which extend longitudinally and are arranged in parallel at intervals, and two transverse beams which extend transversely and are arranged in parallel at intervals, the two transverse beams are arranged between the two longitudinal beams and are respectively connected with the longitudinal beams on two sides through side wing plates, and the vertical height of the transverse beams is lower than that of the longitudinal beams, so that a frame structure which is concave at the transverse beams as a whole is formed;

The frame module forms a rectangular frame, wherein two longitudinal beams and two transverse beams are formed into a left longitudinal beam, a front transverse beam, a right longitudinal beam, a rear transverse beam, a left side wall and a right side wall; the left longitudinal beam, the right longitudinal beam, the left side wall and the right side wall are respectively in mirror symmetry with the middle surface of the frame module in the left-right direction; the front cross beam and the rear cross beam are arranged below the left longitudinal beam and the right longitudinal beam; the left side wall extends downwards and rightwards from the bottom middle position of the right side surface of the left longitudinal beam, and the right side wall extends downwards and leftwards from the bottom middle position of the left side surface of the right longitudinal beam; the front cross beam and the rear cross beam which are positioned between the left longitudinal beam and the right longitudinal beam extend to the two ends of the left side wall and the right side wall respectively along the length direction of the cross beam and then extend to the outer side of the rectangular frame upwards and outwards continuously; the front side and the rear side of the left longitudinal beam which is opened to the left side and the right longitudinal beam which is opened to the right side are respectively extended to the outer side of the rectangular frame;

The main frame comprises a front left main frame, a rear left main frame, a front right main frame and a rear right main frame;

The front side and the rear side of the right longitudinal beam are further fixedly connected with the front right main frame and the rear right main frame respectively;

A left rectangular concave cavity structure is arranged at the rear side of the lap joint of the left longitudinal beam and the front left main frame, and a right rectangular concave cavity structure is arranged at the rear side of the lap joint of the right longitudinal beam and the front right main frame; the length directions of the left rectangular concave cavity structure and the right rectangular concave cavity structure extend along the length direction of the left longitudinal beam respectively, and reinforcing ribs are arranged between opposite side surfaces in the left rectangular concave cavity structure and the right rectangular concave cavity structure;

The left rectangular concave cavity structure and the right rectangular concave cavity structure are respectively arranged on the upper side surfaces of the left longitudinal beam and the right longitudinal beam.

Accordingly, the frame module forms a frame structure which is concave at the cross beam on the whole, so that the whole rigidity and bending and torsion strength of the component can be improved; the frame module is an integrally cast member, so that the processing is facilitated, specifically, in the casting process, the concave arrangement of the cross beams is beneficial to material flow, liquid materials are sequentially filled in the die cavity, gas coiling is avoided, and the yield is improved; the rectangular concave cavity structure arranged along the x direction is arranged at the rear side of the lap joint part of the longitudinal beam of the frame module and the corresponding front side main frame, so that the strength in the z direction and the rigidity value in the y direction can be effectively increased. And the strength in the x and y directions is enhanced by arranging reinforcing rib structures in different directions in the front auxiliary frame, so that the strength of the front auxiliary frame meets the requirements, and the driving safety is improved.

It should be noted that, the term "longitudinal" refers to: in a state where the frame module or the frame is mounted for use in a vehicle, the vehicle corresponds to the entire longitudinal direction of the vehicle, i.e., the X-axis direction in the drawing. The relative position or positional relationship in the longitudinal direction is defined herein as "front", "rear", and accordingly, the "longitudinal direction" may also be described as "front-rear direction" in some contexts.

The term "lateral" means: in a state where the frame module or the frame is mounted and used for a vehicle, the frame module or the frame corresponds to the entire vehicle transverse direction (perpendicular to the longitudinal direction), i.e., the Y-axis direction in the drawing. The relative position or positional relationship in the lateral direction is defined herein as "left", "right", and accordingly, the "lateral direction" may also be described as "left-right direction" in some contexts.

The term "vertical" means: in a state where the frame module or the frame is mounted and used for the vehicle, the whole vehicle height direction of the vehicle, namely, the Z-axis direction in the figure, corresponds. The relative position or positional relationship in the vertical direction is defined herein as "up", "down" or "top", "bottom", and accordingly, the "vertical direction" may also be described as "up-down direction" in some contexts.

According to one embodiment of the utility model, the left rectangular concave cavity structure and the right rectangular concave cavity structure are arranged in mirror symmetry with respect to the middle surface of the frame module in the left-right direction, and two reinforcing ribs in different length directions are arranged inside the left rectangular concave cavity structure and the right rectangular concave cavity structure.

Suitably, one of the reinforcing ribs is distributed along the length direction perpendicular to the left longitudinal beam, the other reinforcing rib is obliquely arranged, and the two reinforcing ribs are arranged at intervals.

According to one embodiment of the utility model, the middle part of the front cross beam is of a structure with a downward opening, and the middle part of the front cross beam is fixedly connected with a reinforcing plate for closing the opening.

Preferably, a lightening hole is formed in the middle of the reinforcing plate.

Suitably, the middle part of the front cross beam is arranged in a shape with thick middle and thin two ends.

According to one embodiment of the utility model, the left longitudinal beam, the front transverse beam, the right longitudinal beam and the rear transverse beam are integrally cast and molded into the bilaterally symmetrical frame body structure by magnesium aluminum alloy.

According to one embodiment of the utility model, a wheel jump left limiting plate is arranged on the outer side of the intersection of the front cross beam and the left longitudinal beam, and the wheel jump left limiting plate is used for limiting the movement amplitude of the left wheel in the vertical direction;

The inner side of the intersection of the front cross beam and the left longitudinal beam is provided with an engine left side installation position;

The wheel jump right limiting plate is arranged on the outer side of the intersection of the front cross beam and the right longitudinal beam, and the wheel jump right limiting plate is used for limiting the movement amplitude of the right wheel in the vertical direction;

The right side mounting position of the engine is arranged on the inner side of the intersection of the front cross beam and the right longitudinal beam;

and the middle part of the rear cross beam is provided with an engine rear side mounting position.

According to one embodiment of the utility model, the outer sides of the junction of the rear cross beam, the left longitudinal beam and the right longitudinal beam are respectively provided with a left side mounting position and a right side mounting position of the vehicle body, so that the front auxiliary frame supports part of the vehicle body.

According to one embodiment of the utility model, the frame module is designed as a front subframe of a vehicle chassis, on which a front suspension bracket is designed or mounted.

In the technical scheme, the frame provided by the utility model has the following beneficial effects:

(1) The utility model comprises a frame module which can be integrally cast and formed, wherein the rear cross beam is a transverse line in the overlooking view, and the front cross beam forms another transverse line; the left longitudinal beam and the right longitudinal beam respectively form two longitudinal lines, the whole frame adopts a 'well' -shaped structure, and the structure is more stable. The left longitudinal beam, the front transverse beam, the right longitudinal beam and the whole are U-shaped cross sections seen along the cross section of the left longitudinal beam in the length direction, the left longitudinal beam, the rear transverse beam and the right longitudinal beam are U-shaped cross sections, the U-shaped cross sections are beneficial to the flow of materials in the casting process, liquid materials are filled in the die cavity in sequence, gas coiling is avoided, and the yield is improved; the 'well' -shaped structure and the U-shaped section enable the non-bearing vehicle body frame structure to form a cradle-shaped frame in a three-dimensional space, and the cradle-shaped frame is similar to an arch, so that ground impact caused by complex road conditions is effectively resisted.

(2) The frame comprises a frame module and a main frame fixed with the frame module, wherein the junction of the front cross beam of the frame module, the left longitudinal beam and the right longitudinal beam is stressed and loaded with complex force, and according to the verification of finite elements, a rectangular concave cavity structure is added at the junction of the left longitudinal beam and the front left main frame and the junction of the right longitudinal beam and the front right main frame in combination with the feasibility of a casting process, and reinforcing ribs are arranged in the width direction, so that the strength of the frame meets the requirements, and the driving safety is further improved.

Drawings

Exemplary embodiments of the present utility model are illustrated in the accompanying drawings. The embodiments and figures disclosed herein are to be regarded as illustrative rather than restrictive. It is further noted that, for clarity of illustration, some of the details of construction in the drawings are not drawn to scale. In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is an isometric view of a disclosed frame module;

FIG. 2 is a schematic view of another angular perspective of the disclosed frame module;

FIG. 3 is a schematic illustration of the connection of the disclosed frame module to the main frame;

FIG. 4 is a schematic view of the structure of the left rectangular cavity or the right rectangular cavity disclosed in the present utility model;

fig. 5 is a schematic structural view of the reinforcement plate of the present disclosure.

Reference numerals:

The left longitudinal beam 1, the right longitudinal beam 1', the front cross beam 2, the rear cross beam 3, the wheel jumping left limit plate 4, the wheel jumping right limit plate 4', the engine left side installation position 5', the engine right side installation position 5', the engine rear side installation position 6, the vehicle body left side installation position 7, the vehicle body right side installation position 7', the front side left main frame 8, the front side right main frame 8', the rear side left main frame 9, the rear side right main frame 9', the left rectangular concave cavity structure 10, the right rectangular concave cavity structure 10', the reinforcing plate 11, the lightening hole 110, the left side wall 301 and the right side wall 302.

Detailed Description

The following description is presented to illustrate the utility model and to enable those skilled in the art to practice the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the utility model defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model. It should also be noted that the features, structures, or characteristics described in connection with a particular embodiment are not necessarily limited to that particular embodiment, nor are they intended to be mutually exclusive with other embodiments, and that it is within the ability of one skilled in the art to implement different combinations of the features of the different embodiments.

In the context of the utility model, the terms "first," "second," "third," and the like in the description and in the claims are used for distinguishing between different objects and not for describing a particular sequential order. Also, the terms "comprising," "including," and "having," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, article, or apparatus that comprises a list of steps or elements is not limited to only those listed but may optionally further include steps or elements not listed or may optionally further include other steps or elements inherent to such process, method, article, or apparatus. In the description of the present utility model, certain terms, such as "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are used for the convenience of description and the simplification of the description, based on the orientation or positional relationship shown in the drawings (unless otherwise defined or specifically indicated), and do not mean that the corresponding apparatus or element must have a specific orientation, be constructed and operated in a specific orientation, and thus the above terms should not be construed as limiting the present utility model. In addition, the terms "a" or "an" should be understood as "at least one" or "one or more", i.e., in a certain embodiment, the number of a certain element may be one, and in another embodiment, the number of the element may be plural, that is, the term "a" should not be construed as limiting the number.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art and are to be specifically interpreted according to their context in the context of the related art description.

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

As shown in fig. 1 to 5, the present utility model provides a frame for an automobile, the frame comprising a frame module integrally cast and formed and a main frame fixed to the frame module, the frame module comprising two longitudinal beams extending longitudinally and arranged in parallel at intervals and two transverse beams extending transversely and arranged in parallel at intervals, the two transverse beams being disposed between the two longitudinal beams and connected to the longitudinal beams on both sides respectively by side wings, the vertical height of the transverse beams being lower than that of the longitudinal beams, so as to form a frame structure which is concave at the transverse beams as a whole;

The frame module forms a rectangular frame, wherein two longitudinal beams and two transverse beams are formed into a left longitudinal beam 1, a front transverse beam 2, a right longitudinal beam 1' and a rear transverse beam 3, and two lateral wings are formed into a left side wall 301 and a right side wall 302; the left longitudinal beam 1 and the right longitudinal beam 1', the left side wall 301 and the right side wall 302 are respectively in mirror symmetry with respect to the middle plane of the frame module in the left-right direction; the front cross beam 2 and the rear cross beam 3 are arranged below the left longitudinal beam 1 and the right longitudinal beam 1'; the left side wall 301 extends downwards and rightwards from the bottom middle position of the right side surface of the left longitudinal beam 1, and the right side wall 302 extends downwards and leftwards from the bottom middle position of the left side surface of the right longitudinal beam 1'; the front cross beam 2 and the rear cross beam 3 positioned between the left longitudinal beam 1 and the right longitudinal beam 1' extend to the two ends of the left side wall (301) and the right side wall (302) along the length direction of the cross beam at the two ends respectively and then extend upwards and outwards to the outer sides of the rectangular frames respectively; the front side and the rear side of the left longitudinal beam (1) which is opened to the left side and the right longitudinal beam (1') which is opened to the right side are respectively extended to the outer side of the rectangular frame;

The main frames comprise a front left main frame 8, a rear left main frame 9, a front right main frame 8 'and a rear right main frame 9';

The front side and the rear side of the left longitudinal beam 1 are fixedly overlapped with the front left main frame 8 and the rear left main frame 9 respectively, and the front side and the rear side of the right longitudinal beam 1' are fixedly overlapped with the front right main frame 8' and the rear right main frame 9' respectively;

A left rectangular concave cavity structure 10 is arranged at the rear side of the lap joint of the left longitudinal beam 1 and the front left main frame 8, and a right rectangular concave cavity structure 10' is arranged at the rear side of the lap joint of the right longitudinal beam 1' and the front right main frame 8 '; the length directions of the left rectangular concave cavity structure 10 and the right rectangular concave cavity structure 10 'respectively extend along the length direction of the left longitudinal beam 1, and reinforcing ribs are arranged between opposite side surfaces in the left rectangular concave cavity structure 10 and the right rectangular concave cavity structure 10';

The left rectangular concave cavity structure 10 and the right rectangular concave cavity structure 10 'are respectively arranged on the upper side surfaces of the left longitudinal beam 1 and the right longitudinal beam 1'.

Accordingly, the frame module forms a frame structure which is concave at the cross beam on the whole, so that the whole rigidity and bending and torsion strength of the component can be improved; the frame module is an integrally cast member, so that the processing is facilitated, specifically, in the casting process, the concave arrangement of the cross beams is beneficial to material flow, liquid materials are sequentially filled in the die cavity, gas coiling is avoided, and the yield is improved; the rectangular concave cavity structure arranged along the x direction is arranged at the rear side of the lap joint part of the longitudinal beam of the frame module and the corresponding front side main frame, so that the strength in the z direction and the rigidity value in the y direction can be effectively increased. And the strength in the x and y directions is enhanced by arranging reinforcing rib structures in different directions in the front auxiliary frame, so that the strength of the front auxiliary frame meets the requirements, and the driving safety is improved.

It should be noted that, the term "longitudinal" refers to: in a state where the frame module or the frame is mounted for use in a vehicle, the vehicle corresponds to the entire longitudinal direction of the vehicle, i.e., the X-axis direction in the drawing. The relative position or positional relationship in the longitudinal direction is defined herein as "front", "rear", and accordingly, the "longitudinal direction" may also be described as "front-rear direction" in some contexts.

The term "lateral" means: in a state where the frame module or the frame is mounted and used for a vehicle, the frame module or the frame corresponds to the entire vehicle transverse direction (perpendicular to the longitudinal direction), i.e., the Y-axis direction in the drawing. The relative position or positional relationship in the lateral direction is defined herein as "left", "right", and accordingly, the "lateral direction" may also be described as "left-right direction" in some contexts.

The term "vertical" means: in a state where the frame module or the frame is mounted and used for the vehicle, the whole vehicle height direction of the vehicle, namely, the Z-axis direction in the figure, corresponds. The relative position or positional relationship in the vertical direction is defined herein as "up", "down" or "top", "bottom", and accordingly, the "vertical direction" may also be described as "up-down direction" in some contexts.

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

The vehicle frame as shown in fig. 1-5 comprises a vehicle frame module and a main vehicle frame, wherein the vehicle frame module comprises a left longitudinal beam 1, a front transverse beam 2, a right longitudinal beam 1', a rear transverse beam 3 which are integrally cast and formed into a rectangular frame; the frame module further comprises a left side wall 301 and a right side wall 302 which are mirror symmetrical with respect to the middle plane of the frame module in the left-right direction; the left side wall 301 and the right side wall 302 are located at intermediate positions in the longitudinal direction of the left side member 1 and the right side member 1', respectively.

As shown in fig. 1, a left side member 1 opening to the left and a right side member 1' opening to the right are oppositely disposed on the left and right sides of the frame and extend in the x direction, so that the longitudinal direction of the side member referred to in the present utility model is the x-axis direction in the figure. The cross sections of the two are U-shaped openings as a whole. The left longitudinal beam 1 sequentially comprises an upper side face, a right side face and a lower side face, and the right longitudinal beam 1' sequentially comprises an upper side face, a left side face and an upper side face.

The left side member 1 and the right side member 1' are mirror-symmetrically arranged with respect to the intermediate xz plane, i.e., the intermediate plane in the left-right direction of the vehicle frame.

Between the left side member 1 and the right side member 1', a front cross member 2 and a rear cross member 3 are arranged in this order from front to rear along the positive x-axis direction; the front cross beam 2 and the rear cross beam 3 form a frame structure of the frame module together with the left longitudinal beam 1, the right longitudinal beam 1', the left side wall 301 and the right side wall 302; the front cross member 2 and the rear cross member 3 are oppositely arranged at the front side and the rear side of the frame, and the front cross member 2 and the rear cross member 3 extend along the Y direction, preferably have symmetrical structures about the middle plane of the frame in the left-right direction. The two ends of the left longitudinal beam 1 and the right longitudinal beam 1 'in the length direction extend to the outer side of the rectangular frame, namely the left longitudinal beam 1 and the right longitudinal beam 1' continue to extend after being intersected with the front cross beam 2 and the rear cross beam 3.

Suitably, the front and rear sides of the left and right stringers 1, 1' extend to the outside of the rectangular frame, respectively, and the left and right sides of the front and rear cross members 2, 3 extend to the left and right side walls 301, 302, respectively, and then continue to extend upward and outward to the outside of the rectangular frame, resembling a boat. The left and right sides of the front cross beam 2 and the rear cross beam 3 extend from the lower parts of the left longitudinal beam 1 and the right longitudinal beam 1 'to the left side of the left longitudinal beam 1 and the right side of the right longitudinal beam 1', respectively; the left longitudinal beam 1, the front transverse beam 2, the right longitudinal beam 1' and the rear transverse beam 3 are integrally formed into a cross shape.

Optionally, in order to improve the strength of the left side member 1 and the right side member 1', the inside of the left side member 1 and the right side member 1' is designed with reinforcing ribs; reinforcing ribs are also provided between the left side wall 301 and the left side rail 1, and between the right side wall 302 and the right side rail 1'.

Wherein the front cross beam 2 and the rear cross beam 3 are arranged below the left longitudinal beam 1 and the right longitudinal beam 1'; the front and rear cross members 2, 3 are connected to the left and right side members 1, 1' by left and right side walls 301, 302. The front cross beam 2 and the rear cross beam 3 are arranged in the-z direction below the left longitudinal beam 1 and the right longitudinal beam 1', are arranged back and forth along the x direction and extend left and right along the y direction, and the front cross beam 2 and the rear cross beam 3 are connected with the left longitudinal beam 1 and the right longitudinal beam 1' into a whole through a left side wall 301 and a right side wall 302. The left side wall 301 and the right side wall 302 form a rectangular frame integrally in one plane with the front cross member 2 and the rear cross member 3.

The left side wall 301 extends downward and rightward from the bottom intermediate position of the right side surface of the left side member 1, and the right side wall 302 extends downward and leftward from the bottom intermediate position of the left side surface of the right side member 1'. The left 301 and right 302 side walls are integrally sloped to facilitate the flow of material onto the front 2 and rear 3 cross members during casting.

Suitably, both ends in the longitudinal direction of the front cross member 2 and the rear cross member 3 between the left side member 1 and the right side member 1' extend to the left side wall 301 and the right side wall 302, respectively.

As shown in fig. 3, the front and rear sides of the left side member 1 are fixedly overlapped with the front left main frame 8 and the rear left main frame 9, respectively, and the front and rear sides of the right side member 1' are fixedly overlapped with the front right main frame 8' and the rear right main frame 9', respectively; the front sides of the left longitudinal beam 1 and the right longitudinal beam 1 'are preferably connected with a front left main frame 8 and a front right main frame 8' respectively through bolts; the rear sides of the left longitudinal beam 1 and the right longitudinal beam 1 'are respectively connected with a rear left main frame 9 and a rear right main frame 9' through bolts.

According to one embodiment of the utility model, a left rectangular concave cavity structure 10 is arranged at or near the lap joint of the left longitudinal beam 1 and the front left main frame 8, and a right rectangular concave cavity structure 10' is arranged at or near the lap joint of the right longitudinal beam 1' and the front right main frame 8 '; the length directions of the left rectangular concave cavity structure 10 and the right rectangular concave cavity structure 10' extend along the length direction of the longitudinal beam respectively; the two lateral surfaces in the width direction in the left rectangular concave cavity structure 10 and the right rectangular concave cavity structure 10 'are connected through reinforcing ribs, and the left rectangular concave cavity structure 10 and the right rectangular concave cavity structure 10' are arranged in mirror symmetry with respect to the middle surface in the left-right direction of the frame.

Suitably, the left and right rectangular cavity structures 10, 10 'are preferably provided on the upper sides of the left and right stringers 1, 1' at a position at a later point of the lap joint to strengthen the strength of the lap joint.

Preferably, the left and right rectangular cavity structures 10 and 10' are symmetrically arranged about the middle xz-plane of the frame module and internally provided with two reinforcing bars of different length directions. The two reinforcing ribs with different length directions can improve the strength in different directions.

More specifically, as shown in fig. 4, one of the reinforcing ribs is distributed in a direction perpendicular to the length direction of the left side member 1, that is, in the direction of the front cross member 2, the other reinforcing rib is arranged obliquely, and the two reinforcing ribs are arranged at intervals.

Because the junction of the front cross beam 2, the left longitudinal beam 1 and the right longitudinal beam 1 'is stressed and loaded with complex force, according to finite element analysis and verification, the connection of the left longitudinal beam 1 and the front left main frame and the connection of the right longitudinal beam 1' and the front right main frame are added with a left rectangular concave cavity structure 10 and a right rectangular concave cavity structure 10', namely the surfaces of the left longitudinal beam 1 and the right longitudinal beam 1' are concave and a rectangular cavity is reserved. The two rectangular cavity structures can effectively increase the strength in the z direction and the rigidity in the y direction. And the strength of the x direction and the y direction is enhanced by being matched with the reinforcing rib structures in different directions, meanwhile, the front ends of the left longitudinal beam 1 and the right longitudinal beam 1' are better in metal fluidity and better in mechanical property in the casting process, one reinforcing rib is distributed along the y direction, the strength of the front auxiliary frame meets the requirement, and the driving safety is further improved.

According to one embodiment of the present utility model, the middle part of the front cross member 2 is a structure that is opened downward, and the middle part of the front cross member 2 is fixedly connected to a reinforcing plate 11 for closing the opening.

Further, a lightening hole 110 is formed in the middle of the reinforcing plate 11.

Suitably, the middle part of the front cross member 2 is provided in a shape with thick middle and thin ends, so that the rigidity of the front cross member can be enhanced.

The lower side of the front cross beam 2 is connected with the reinforcing plate 11 made of aluminum alloy through bolts, so that the front cross beam is approximately formed into a rectangular structure with four closed sides by a U-shaped structure with three closed sides, the rigidity meets the requirement, and the stability is further improved. The boundary of the reinforcing plate and the contour of the front cross beam follow, and the middle part of the reinforcing plate 11 is designed into a runway-shaped hollow structure, so that the rigidity of the auxiliary frame is ensured to be increased, and the light weight effect is further reflected.

At present, most of auxiliary frames are designed by adopting steel plate punching welding or partially integrated casting reinforced steel plates, for example, chinese patent application publication No. CN 218536851U discloses a high-pressure casting frame type rear auxiliary frame, and the bottom of the frame auxiliary frame is provided with a reinforcing plate, so that the strength and the rigidity of the auxiliary frame can be enhanced, but the whole closed structure reinforcing plate greatly increases the weight. In the embodiment, the reinforcing plate is arranged at the middle position below the front cross beam 2, so that the area of the reinforcing plate in the prior art is effectively reduced.

According to one embodiment of the utility model, the left side rail 1, the front cross rail 2, the right side rail 1' and the rear cross rail 3 are integrally cast from magnesium-aluminum alloy, preferably aluminum-magnesium alloy with silicon added. The frame module body structure adopts a high-strength magnesium aluminum alloy integral die-casting forming process, the reinforcing plate 11 is formed by extrusion rolling of high-strength aluminum alloy, and corresponding shapes are cut through electric sparks.

It can be understood that the left longitudinal beam 1 and the right longitudinal beam 1' are arranged at different heights with the front cross beam 2 and the rear cross beam 3, and a larger assembly space is reserved between the front cross beam 2 and the rear cross beam 3, so that the left limiting plate for wheel jump, the left side mounting position of the engine and the mounting position of the vehicle body are selected more.

According to one embodiment of the utility model, a wheel jump left limiting plate 4 is arranged on the outer side of the intersection of the front cross beam 2 and the left longitudinal beam 1, and the wheel jump left limiting plate 4 is used for limiting the movement amplitude of the left wheel in the vertical direction; the lower plane of the wheel jumping left limiting plate 4 collides with a rubber impact block arranged on the left wheel suspension under the limit working condition so as to limit and restrain the upward jumping amplitude of the left wheel suspension.

The wheel jump right limiting plate 4' is arranged on the outer side of the junction of the front cross beam 2 and the right longitudinal beam 1', and the wheel jump right limiting plate 4' is used for vertically moving the right wheel at present; the wheel up-jump left limiting plate 4 and the wheel up-jump right limiting plate 4' prevent the left wheel from moving upwards in the vertical direction too much amplitude and produce too much jounce feeling.

An engine left side mounting position 5 is arranged on the inner side of the intersection of the front cross beam 2 and the left longitudinal beam 1; an engine right side mounting position 5 'is arranged on the inner side of the junction of the front cross beam 2 and the right longitudinal beam 1'; the middle part of the rear cross member 3 is provided with an engine rear side mounting position 6. The engine is mounted on the left side mounting position 5, the right side mounting position 5' and the rear side mounting position 6 of the engine simultaneously through bolts, so that the engine is restrained on the front auxiliary frame.

According to one embodiment of the utility model, the rear cross member 3 is arranged outside the junction with the left and right side members 1, 1' with a left-hand mounting position 7 and a right-hand mounting position 7' of the vehicle body, respectively, and the front part of the vehicle body is mounted on the left-hand mounting position 7 and the right-hand mounting position 7' of the vehicle body by means of a bolt structure, and the front subframe supports part of the weight of the vehicle body in such a manner as to provide a cushioning effect to the vehicle body.

According to one embodiment of the present utility model, the front beam 2 and the rear beam 3 are respectively of a downward opening structure, and the left side wall 301 is shaped as a stepped surface structure including a top surface and a downward extending side surface; the top surfaces of the front and rear cross members are smoothly connected to the both ends of the top surface of the left side wall 301, respectively. The top surface of the left side wall 301, the top surface of the right side surface, the top surfaces of the front cross member 2 and the rear cross member 3 integrally enclose a rectangular ring.

The right side surface of the left side wall 301 or the both ends of the left side surface of the right side wall 302 are smoothly connected to the rear side surface of the front cross member 2 and the front side surface of the rear cross member 3, respectively. The right side surface of the left side wall 301, the left side surface of the right side wall 302, the rear side surface of the front cross member 2, and the front side surface of the rear cross member 3 are integrally surrounded to form another rectangular ring.

The above description is only illustrative of the preferred embodiments of the present utility model and of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the utility model is not limited to the specific combination of the above technical features, but also encompasses other technical solutions which may be formed by any combination of the above technical features or their equivalents without departing from the spirit of the utility model. Such as the above-mentioned features and the technical features disclosed in the present utility model (but not limited to) having similar functions are replaced with each other.

Claims (10)

1. The frame for the automobile is characterized by comprising a frame module and a main frame, wherein the frame module is formed by integral casting, the main frame is fixed with the frame module, the frame module comprises two longitudinal beams which extend longitudinally and are arranged at intervals in parallel, and two transverse beams which extend transversely and are arranged at intervals in parallel, the two transverse beams are arranged between the two longitudinal beams and are respectively connected with the longitudinal beams on two sides through side wing plates, the vertical height of the transverse beams is lower than that of the longitudinal beams, and a frame structure which is concave at the transverse beams as a whole is formed;

The frame module forms a rectangular frame, wherein two longitudinal beams and two transverse beams are formed into a left longitudinal beam (1), a front transverse beam (2), a right longitudinal beam (1') and a rear transverse beam (3), and two side wing plates are formed into a left side wall (301) and a right side wall (302); the left longitudinal beam (1) and the right longitudinal beam (1'), and the left side wall (301) and the right side wall (302) are respectively in mirror symmetry with respect to the middle plane of the frame module in the left-right direction; the front cross beam (2) and the rear cross beam (3) are arranged below the left longitudinal beam (1) and the right longitudinal beam (1'); the left side wall (301) extends downwards and rightwards from the bottom middle position of the right side surface of the left longitudinal beam (1), and the right side wall (302) extends downwards and leftwards from the bottom middle position of the left side surface of the right longitudinal beam (1'); the front cross beam (2) and the rear cross beam (3) which are positioned between the left longitudinal beam (1) and the right longitudinal beam (1') extend to the two ends of the left side wall (301) and the right side wall (302) along the length direction of the cross beam respectively at the two ends and then extend upwards and outwards to the outer sides of the rectangular frame respectively; the front side and the rear side of the left longitudinal beam (1) which is opened to the left side and the right longitudinal beam (1') which is opened to the right side are respectively extended to the outer side of the rectangular frame;

The main frames comprise a front left main frame (8), a rear left main frame (9), a front right main frame (8 ') and a rear right main frame (9');

The front side and the rear side of the left longitudinal beam (1) are fixedly overlapped with the front side left main frame (8) and the rear side left main frame (9) respectively, and the front side and the rear side of the right longitudinal beam (1 ') are fixedly overlapped with the front side right main frame (8 ') and the rear side right main frame (9 ') respectively;

A left rectangular concave cavity structure (10) is arranged at the rear side of the lap joint of the left longitudinal beam (1) and the front left main frame (8), and a right rectangular concave cavity structure (10 ') is arranged at the rear side of the lap joint of the right longitudinal beam (1 ') and the front right main frame (8 '); the length directions of the left rectangular concave cavity structure (10) and the right rectangular concave cavity structure (10 ') extend along the length direction of the left longitudinal beam (1), and reinforcing ribs are arranged between opposite side surfaces in the left rectangular concave cavity structure (10) and the right rectangular concave cavity structure (10');

The left rectangular concave cavity structure (10) and the right rectangular concave cavity structure (10 ') are respectively arranged on the upper side surfaces of the left longitudinal beam (1) and the right longitudinal beam (1').

2. The frame according to claim 1, wherein the left rectangular concave cavity structure (10) and the right rectangular concave cavity structure (10') are arranged in mirror symmetry with respect to a middle plane of the frame module in the left-right direction and are internally provided with two reinforcing ribs in different length directions.

3. A frame as claimed in claim 2, wherein one of the ribs is arranged in a direction perpendicular to the length of the left side rail (1), the other rib being arranged obliquely, the two ribs being arranged at intervals.

4. The frame according to claim 1, characterized in that the middle part of the front cross member (2) is a structure with a downward opening, and the middle part of the front cross member (2) is fixedly connected with a reinforcing plate (11) for closing the opening.

5. The frame according to claim 4, characterized in that the middle of the reinforcing plate (11) is provided with a lightening hole (110).

6. A frame according to claim 4 or 5, characterized in that the middle part of the front cross member (2) is provided in the shape of a middle thick end and a middle thin end.

7. The frame according to claim 1, wherein the left side member (1), the front cross member (2), the right side member (1') and the rear cross member (3) are integrally cast from magnesium aluminum alloy into the frame body structure which is bilaterally symmetrical.

8. The frame according to claim 1, characterized in that a wheel jump left limiting plate (4) is arranged on the outer side of the intersection of the front cross beam (2) and the left longitudinal beam (1) for limiting the movement amplitude of the left wheel in the vertical direction;

an engine left side mounting position (5) is arranged on the inner side of the intersection of the front cross beam (2) and the left longitudinal beam (1);

A wheel jump right limiting plate (4 ') is arranged on the outer side of the intersection of the front cross beam (2) and the right longitudinal beam (1 '), and the wheel jump right limiting plate (4 ') is used for limiting the movement amplitude of the right wheel in the vertical direction;

an engine right side mounting position (5 ') is arranged on the inner side of the intersection of the front cross beam (2) and the right longitudinal beam (1');

An engine rear side mounting position (6) is arranged in the middle of the rear cross beam (3).

9. The frame according to claim 1, characterized in that the outside of the junction of the rear cross member (3) with the left and right side members (1, 1 ') is provided with a left-hand mounting location (7) and a right-hand mounting location (7') for supporting at least part of the vehicle body, respectively.

10. The frame of claim 1, wherein the frame module is configured as a front subframe of an automotive chassis, the frame module having a front suspension bracket configured or mounted thereon.