CN118062110A - Frame module and frame for automobile - Google Patents

Abstract

The invention relates to a frame module and a frame for an automobile, wherein the frame module is formed by integrally cast members and 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, the vertical height of the transverse beams is lower than that of the longitudinal beams, and the transverse beams are respectively connected with the longitudinal beams on two sides through side wing plates to form a frame structure which is concave at the transverse beams as a whole; the cross beams and the longitudinal beams are U-shaped in main cross section, the U-shaped openings of the two longitudinal beams face to two sides in a way of deviating from each other, and the U-shaped openings of the two cross beams face downwards and are provided with vertical flange surfaces opposite to each other at the inner side of the frame body structure; two battens which correspond to the longitudinal beams and extend continuously in the longitudinal direction are arranged between the two cross beams, the battens form vertical plate surfaces which are opposite to the inner side of the frame body structure, and the two vertical flange surfaces and the two vertical plate surfaces are surrounded to form a closed rectangular frame, so that the connection rigidity, bending resistance and torsional strength of the frame and other stamping parts are improved.

Description

Frame module and frame for automobile

Technical Field

The invention relates to the technical field of automobile parts, in particular to a frame module and a frame suitable for a chassis of a commercial automobile.

Background

The 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 a vital 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 vehicle weight, the strength and rigidity requirements of the aluminum-magnesium casting alloy structure are difficult to reach, and particularly, the joint position of the casting and the main steel part often has insufficient strength and concentrated stress to break and destroy everywhere. It is common to simply add or change nearby rib structures, but has limited effect due to the spatial location of the structure and the casting process.

There is a need for a frame structure that enhances the strength of the connection between the casting and the body steel.

Disclosure of Invention

The invention aims to provide a frame module and a frame suitable for a chassis of a commercial vehicle, and aims to solve the technical problem that the structural strength and rigidity of the frame connected with each part of a main frame are insufficient on the basis of ensuring the light weight effect of the frame.

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

According to a first aspect of the present invention there is provided a frame module formed from integrally cast components comprising two longitudinally extending and parallel spaced apart stringers and two transversely extending and parallel spaced apart stringers, the two stringers being disposed between the stringers, the stringers being of lower vertical height than the stringers and being connected to the stringers on either side respectively by side wings to form a frame structure which is generally concave at the stringers;

The cross beams and the longitudinal beams are U-shaped in main body cross sections, the U-shaped openings of the two longitudinal beams face to two sides in a way of deviating from each other, and the U-shaped openings of the two cross beams face to the lower side and are provided with vertical flange surfaces opposite to each other on the inner side of the frame body structure;

two battens which correspond to the longitudinal beams and extend continuously in the longitudinal direction are arranged between the two cross beams, the battens form vertical plate surfaces which are opposite to each other on the inner side of the frame body structure, and the vertical flange surfaces of the two cross beams are connected with the vertical plate surfaces of the two battens in a surrounding manner to form a closed rectangular frame.

According to the structure of the two longitudinal beams and the two transverse beams and the orientation arrangement of the U-shaped main bodies of the two longitudinal beams and the two transverse beams can enable the frame to form a cradle-shaped frame in a three-dimensional space, and the cradle-shaped frame is similar to an arch, can effectively resist ground impact caused by complex road conditions, and can bear stronger working condition stress in multiple complex working conditions; meanwhile, the inner side of the frame body structure is provided with a closed frame (rectangular frame) formed by four vertical surfaces, so that the overall rigidity and bending and torsion strength of the component can be greatly improved; the frame module in the middle of the frame is an integrated casting formed by integral casting, which is beneficial to processing, in particular, in the casting process, the orientation arrangement of the U-shaped main body is beneficial to material flow, liquid materials are sequentially filled in the die cavity, so that the gas rolling is avoided, and the yield is improved; in particular, the frame module and the front and rear cross beams of the frame are of inverted U-shaped cross section, and the left and right longitudinal beams are respectivelyAnd/>The cross section is shaped and the opening is towards the outer side of the frame, and the cross section combination can resist torsional deformation better.

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 "upper", "lower" or "top", "bottom", and accordingly, the "vertical" may also be described in some contexts as "up-down direction"

According to one embodiment of the invention, the components of the frame module are constructed as an integrated casting of a bilateral symmetry structure, wherein two longitudinal beams are formed as left and right longitudinal beams on the left and right sides, and two transverse beams are formed as front and rear transverse beams on the front and rear sides;

The left longitudinal beam which is opened to the left and the right longitudinal beam which is opened to the right are arranged in mirror symmetry with respect to the middle surface of the frame module in the left-right direction;

The front cross beam with the downward opening and the rear cross beam with the downward opening are arranged below the left longitudinal beam and the right longitudinal beam;

The two side wing plates are formed into a left side wall and a right side wall which are arranged in mirror symmetry with respect to the middle surface of the frame module in the left-right direction;

The left side wall comprises a bottom middle position of the right side surface of the left longitudinal beam, and extends downwards and rightwards; the right side wall extends downwards and leftwards from the bottom middle position of the left side surface of the right longitudinal beam;

the left end and the right end of the front cross beam and the rear cross beam extend to the left side wall and the right side wall respectively;

The two battens are formed into a left middle surface and a right middle surface which are arranged in mirror symmetry with respect to the middle surface of the frame module in the left-right direction, and the rear side surface of the front cross beam is connected with the left end of the front side surface of the rear cross beam through the left middle surface; the rear side surface of the front cross beam is connected with the right end of the front side surface of the rear cross beam through a right middle surface; the upper side of the left middle surface is connected with the lower side of the left side wall; the upper side of the right middle surface is connected with the lower side of the right side wall;

The left side wall, the right side wall, the front cross beam, the rear cross beam, the right middle surface and the left middle surface jointly form the rectangular frame which is integrally positioned at the same height;

the front end and the rear end of the left longitudinal beam and the right longitudinal beam respectively extend to the outer sides of the rectangular frames;

the front side surface and the rear side door of the front cross beam, and the front side surface and the rear side surface of the rear cross beam extend to the outer side of the rectangular frame in an upward and outward inclined mode respectively.

According to one embodiment of the invention, a plurality of rib plates which are arranged at intervals are vertically connected among the right middle surface, the right side wall and the lower side surface of the right longitudinal beam;

a plurality of rib plates which are arranged at intervals are vertically connected among the left middle surface, the left side wall and the lower side surface of the left longitudinal beam;

The inside of the left longitudinal beam and the right longitudinal beam are respectively connected with V-shaped reinforcing rib plates which are arranged along the longitudinal direction of the longitudinal beam and are connected end to end;

Intermediate flat plates are respectively arranged between the upper side surfaces and the lower side surfaces of the left longitudinal beam and the right longitudinal beam.

According to one embodiment of the invention, the inside of the front cross beam is provided with a reinforcing rib with a cross structure in a shape of a Chinese character 'mi', and the cross position is arranged in a ring shape;

the inside of rear cross beam is provided with the strengthening rib that is "rice" word or "X" cross structure, and the cross position sets up to the ring-shaped.

According to one embodiment of the present invention, the bottom surface of the middle position in the longitudinal direction of the front cross member is sealed with a reinforcing plate.

According to one embodiment of the invention, the frame module is made of aluminum magnesium alloy added with silicon.

According to a second aspect of the present invention there is also provided a frame for an automobile, the frame comprising a frame module as described above;

the left and right side rails are respectively arranged on the left and right side rails;

The front end and the rear end of the left longitudinal beam are respectively connected with the left front longitudinal beam and the left rear longitudinal beam through at least two groups of bolts with different axial orientations; the front end and the rear end of the right longitudinal beam are respectively connected with the right front longitudinal beam and the right rear longitudinal beam through at least two groups of bolts which are axially in different orientations.

According to the structure, the frame module can be connected with other parts to form the frame, and the structural strength and rigidity of the frame module connected with each part of the main frame can be effectively improved on the basis of guaranteeing the light weight effect of the frame module, so that the frame module is particularly suitable for a chassis of a commercial vehicle.

According to one embodiment of the invention, the ends of the left front longitudinal beam, the right front longitudinal beam, the left rear longitudinal beam and the right rear longitudinal beam, which are connected with the frame module, are provided with an opening structure, the opening direction of the opening structure is opposite to the opening direction of the left longitudinal beam and the right longitudinal beam, so that the ends of the left front longitudinal beam, the right front longitudinal beam, the left rear longitudinal beam and the right rear longitudinal beam can be correspondingly buckled outside the left longitudinal beam and the right longitudinal beam and close the openings of the ends of the left longitudinal beam and the right longitudinal beam;

the two sets of bolts at least comprise 2 bolts which are arranged in the up-down direction and 2 bolts which are arranged in the front-back direction.

According to one embodiment of the invention, a left steering bracket is arranged at the connection position of the frame module and the left front longitudinal beam, and a right steering bracket is arranged at the connection position of the frame module and the right front longitudinal beam.

According to one embodiment of the invention, a left rectangular concave cavity structure is arranged beside a buckling position of the upper side surface of the left longitudinal beam and the left front longitudinal beam, and a right rectangular concave cavity structure is arranged beside a buckling position of the upper side surface of the right longitudinal beam and the right front longitudinal beam; 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 with different directions are respectively connected between opposite side surfaces in the left rectangular concave cavity structure and the right rectangular concave cavity structure;

One reinforcing rib is distributed in the left rectangular concave cavity structure or the right rectangular concave cavity structure along the length direction parallel to the front cross beam, the other reinforcing rib is obliquely arranged, and a space is reserved between the two reinforcing ribs.

In the technical scheme, the frame module and the frame for the automobile provided by the invention have the following beneficial effects:

The rear cross beam is a transverse line from 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 cross beam and the right longitudinal beam are integrally U-shaped cross sections when seen along the cross section of the left longitudinal beam in the length direction, the left longitudinal beam, the rear cross beam and the right longitudinal beam are integrally U-shaped cross sections, the U-shaped cross sections are beneficial to material flow in the casting process, liquid materials are sequentially filled in a die cavity, gas coiling is avoided, and the yield is improved; the 'well' -shaped structure and the U-shaped section enable the frame to form a cradle-shaped frame in a three-dimensional space, which is similar to an arch shape, and effectively resists the ground impact caused by complex road conditions; the frame module in the middle of the frame is an integrated casting which is formed by integral casting, thereby being beneficial to processing; in particular, the frame module and the front and rear cross beams of the frame are of inverted U-shaped cross section, and the left and right longitudinal beams are respectively And/>The cross section is shaped and the opening is towards the outer side of the frame, and the cross section combination can resist torsional deformation better. .

The frame of the invention is a steel-aluminum hybrid material structure frame. Specifically, the frame module casting is manufactured by adopting an integrated die-casting molding process, at least two groups of bolts with different axial orientations are adopted between the steel longitudinal beam and the aluminum casting for cross connection, so that the assembly process is simplified, the production efficiency is improved, and the position accuracy of the mounting point is more accurate because the casting is integrally molded, and the weight is reduced by 30% on the premise that the strength and the rigidity of the frame are ensured by adopting high-strength aluminum magnesium alloy.

It will be appreciated that the features and advantages of the frame module provided according to the first aspect of the invention are equally applicable to the frame provided according to the second aspect of the invention.

Drawings

Exemplary embodiments of the present invention 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 invention 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 invention, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a front assembled isometric view of a disclosed frame;

FIG. 2 is a rear assembled isometric view of the disclosed frame;

FIG. 3 is a top view of the assembly of the disclosed frame;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is a front assembled isometric view of the disclosed frame module configured as an integrated casting;

FIG. 6 is a rear assembled isometric view of the disclosed frame module configured as an integrated casting;

FIG. 7 is a schematic view of a partially enlarged construction of the left front side rail and the left side rail at the point where they are fastened together in accordance with the present disclosure;

FIG. 8 is a schematic view of the structure of the inside of the left side rail of the present disclosure;

fig. 9 is a schematic view of the structure of the left rectangular cavity structure disclosed in the present invention.

Reference numerals:

The integrated casting 100, front cross member 101, rear cross member 102, left side member 103, right side member 104, first set of bolts 1041, second set of bolts 1042, left side wall 105, gusset 107, right side wall 106, reinforcement plate 303, center plate 1033, left front side member 201, right front side member 202, left rear side member 203, right rear side member 204, left steering bracket 301, right steering bracket 302, left middle surface 403, right middle surface 404, left rectangular cavity structure 10, right rectangular cavity structure 10', wheel kick limiting device 1071, wheel kick limiting device 108, shock absorber upper mounting point 110, upper control arm mounting point 111, left lower control arm mounting point 113, right lower control arm mounting point 113', vehicle body mounting point 109, powertrain mounting point 112.

Detailed Description

The following description is presented to illustrate the invention and to enable those skilled in the art to practice the invention. 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 invention 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 invention. 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 present invention, the terms "first," "second," "third," and the like in the description and in the claims of the invention 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 invention, 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 invention. 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 invention will be described in detail below with reference to the drawings in connection with embodiments.

As shown in fig. 1-7, and with particular reference to fig. 5 and 6, the present invention provides a frame module formed of integrally cast members, comprising two longitudinal beams extending longitudinally and spaced apart in parallel and two transverse beams extending transversely and spaced apart in parallel, the two transverse beams being disposed between the two longitudinal beams, the transverse beams being lower in vertical height than the longitudinal beams and being connected to the longitudinal beams on both sides by side wings, respectively, to form a frame structure that is generally concave at the transverse beams;

The cross beams and the longitudinal beams are U-shaped in main body cross sections, the U-shaped openings of the two longitudinal beams face to two sides in a way of deviating from each other, and the U-shaped openings of the two cross beams face to the lower side and are provided with vertical flange surfaces opposite to each other on the inner side of the frame body structure;

two battens which correspond to the longitudinal beams and extend continuously in the longitudinal direction are arranged between the two cross beams, the battens form vertical plate surfaces which are opposite to each other on the inner side of the frame body structure, and the vertical flange surfaces of the two cross beams are connected with the vertical plate surfaces of the two battens in a surrounding manner to form a closed rectangular frame.

According to the structure, the two longitudinal beams and the two transverse beams and the orientation arrangement of the U-shaped main body of the structure can enable the frame to form a cradle-shaped frame in a three-dimensional space, and the cradle-shaped frame is similar to an arch shape, so that the ground impact caused by complex road conditions can be effectively resisted; meanwhile, the inner side of the frame body structure is provided with a closed frame (rectangular frame) formed by four vertical surfaces, so that the overall rigidity and bending and torsion strength of the component can be greatly improved; the frame module in the middle of the frame is an integrated casting formed by integral casting, which is beneficial to processing, and particularly, in the casting process, the orientation arrangement of the U-shaped main body is beneficial to material flow, liquid materials are sequentially filled in the die cavity, so that the gas rolling is avoided, and the yield is improved.

It should be noted that, as used herein, the term "longitudinal" means: 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 "transverse" as used herein 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" as used herein 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.

Preferably, the side wing plate extends longitudinally therethrough between the two cross beams to form a continuous wall surface. The lower edge of the side panel is integrally connected to the upper edge of the slat and preferably transitions smoothly.

In order to better understand the technical solution of the present invention, an embodiment of the present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 7, the members in the frame module are constructed as an integrated casting 100 of a bilateral symmetry structure in which two of the stringers are formed as a left stringer 103 and a right stringer 104 on the left and right sides and two of the cross members are formed as a front cross member 101 and a rear cross member 102 on the front and rear sides. For ease of description, the front-to-back, left-to-right directions shown in fig. 1 will be described herein as examples. The front beam 101 and the rear beam 102 are located in the front-rear direction, and the front beam 101 is opposite to the front; the left side member 103 and the right side member 104 are located in the left-right direction, and the left side member 103 is opposed to the left.

Expediently, the left longitudinal beam 103 which opens to the left and the right longitudinal beam 104 which opens to the right are arranged mirror-symmetrically with respect to the middle plane of the frame module in the left-right direction; the left side member 103 and the right side member 104 each extend in the X direction. The left side member 103 includes an upper side surface, a right side surface, and a lower side surface in this order. The right stringer 104 includes an upper side, a left side, and a lower side in that order. The left side member 103 and the right side member 104 have a cross-sectional shape generally resembling a U-shape with an opening in a transverse position, and the right side surface of the left side member 103 and the left side surface of the right side member 104 may be inclined downward into the vehicle frame in order to facilitate downward flow or drawing of material.

Suitably, a front cross member 101 opening downward and a rear cross member 102 opening downward are provided below the left side member 103 and the right side member 104; the front beam 101 and the rear beam 102 extend in the Y direction. The front and rear cross members 101 and 102 are integrally shaped like a U with a downward opening, and include a front side, a top side, and a rear side, respectively. The front and rear cross members 101, 102 are connected to the left and right stringers 103, 104 by left and right side walls 105, 106.

The invention further proposes that the two side panels of the integrated casting 100 form a left side wall 105 and a right side wall 106 which are arranged mirror-symmetrically with respect to the left-right direction middle plane of the frame module; the left side wall 105 extends downward and rightward from the bottom intermediate position of the right side surface of the left side member 103; the right side wall 106 extends downward and leftward from a bottom intermediate position of the left side face of the right side member 104; the left and right side walls 105, 106 are generally sloped to facilitate drainage of liquid material from the left or right stringers 103, 104 down through the left and right side walls 105, 106 to the front and rear cross members 101, 102 during casting.

The left and right ends of the front beam 101 and the rear beam 102 extend to the left side wall 105 and the right side wall 106, respectively;

The invention further proposes that the two strips are formed as a left intermediate surface 403 and a right intermediate surface 404 arranged mirror-symmetrically with respect to the left-right direction intermediate surface of the frame module, the left end of the rear side surface of the front cross member 101 and the left end of the front side surface of the rear cross member 102 being connected by the left intermediate surface 403; the right end of the rear side of the front cross beam 101 and the right end of the front side of the rear cross beam 102 are connected by a right middle surface 404; the upper side of the left middle face 403 is connected to the lower side of the left side wall 105; the upper side of the right middle face 404 is connected to the lower side of the right side wall 106;

According to the structure shown in fig. 5, the top surface of the front cross member 101, the top surface of the rear cross member 102, the left side wall 105 and the right side wall 106 together form a rectangular ring; the left side wall 105 and the right side wall 106 extend downward from a left middle surface 403 and a right middle surface 404, respectively, and the rear side surface of the front cross member 101, the left middle surface 403, the front side surface of the rear cross member 102, and the right middle surface 404 sequentially form another rectangular ring. The left sidewall 105 and the left intermediate surface 403 integrally form a stepped surface.

Suitably, the left side wall 105, the right side wall 106, the front cross member 101, the rear cross member 102, the left middle surface 403, and the right middle surface 404 together form a rectangular frame that is integrally located at the same height. In addition, the rectangular frame which is positioned on the same plane is arranged below the frame module, so that the mold parting and the gate arrangement are facilitated, meanwhile, due to the fact that the rectangular frame is positioned on the same height, simultaneous feeding is easy to achieve when materials such as molten aluminum enter the casting body, and the mold filling is smoother.

The front and rear ends of the left side member 103 and the right side member 104 extend to the outside of the rectangular frame, respectively; that is, the left side wall 105 and the right side wall 106 are provided at the intermediate positions in the longitudinal direction of the left side member 103 and the right side member 104.

The front side and the rear side of the front cross beam 101, the front side and the rear side of the rear cross beam 102 extend obliquely upward and outward to the outside of the rectangular frame, respectively; the front and rear sides of the front cross member 101 and the front and rear sides of the rear cross member 102 meet the left and right side walls 105 and 106 and then continue to extend obliquely upward and outward of the rectangular frame, and preferably extend to the lower sides of the left and right side members 103 and 104, so that the front and rear cross members 101 and 102 are respectively formed integrally as a ship shape. The front side surface and the rear side surface of the front cross beam 101, the front side surface and the rear side surface of the rear cross beam 102 are intersected on the bottom surfaces of the left side wall 105, the right side wall 106, the left longitudinal beam 103 and the right longitudinal beam 104, so that the function of a reinforcing rib plate is achieved, and meanwhile, the smoothness of the upward surfaces of the left side wall 105, the right side wall 106, the left longitudinal beam 103 and the right longitudinal beam 104 is ensured.

The technical scheme provided by the invention is particularly suitable for a frame of a chassis of a commercial vehicle, and the frame comprises a frame module, and further comprises a left front longitudinal beam 201, a right front longitudinal beam 202, a left rear longitudinal beam 203 and a right rear longitudinal beam 204 which are all punched by metal; preferably steel.

With reference to the structure shown in fig. 1 to 3, the front and rear ends of the left side member 103 are respectively connected to the left front side member 201 and the left rear side member 203 by at least two sets of bolts having different orientations in the axial direction; the front and rear ends of the right side member 104 are respectively connected to the right front side member 202 and the right rear side member 204 by at least two sets of bolts having axially different orientations. That is, the connection points of each of the left and right stringers 103, 104 to the steel member are connected by two sets of axially distinct bolts. This further improves the connection performance of the integrated casting 100 with the left front side member 201, the right front side member 202, the left rear side member 203, and the right rear side member 204, as compared with all the bolts in the same direction.

Preferably, the ends of the left front longitudinal beam 201, the right front longitudinal beam 202, the left rear longitudinal beam 203 and the right rear longitudinal beam 204, which extend in the front-rear direction and are connected with the frame module (the integrated casting 100), are provided with an opening structure, and the opening direction of the opening structure is opposite to the opening direction of the left longitudinal beam 103 and the right longitudinal beam 104, so that the ends of the left front longitudinal beam 201, the right front longitudinal beam 202, the left rear longitudinal beam 203 and the right rear longitudinal beam 204 can be buckled outside the left longitudinal beam 103 and the right longitudinal beam 104;

the two sets of bolts at least comprise 2 bolts which are arranged in the up-down direction and 2 bolts which are arranged in the front-back direction.

Taking the connection of the left front side member 201 and the left side member 103 as an example, in connection with the structures shown in fig. 1 and 7, the rear end of the left front side member 201 is an opening facing right, and the rear end of the left front side member 201 sequentially includes an upper side surface, a left side surface, and a lower side surface, and is a U-shaped opening that is horizontally arranged and faces right as a whole. The left side face of the rear end of the left front side member 201 and the right side face of the left side member 103 are arranged opposite to each other, the rear end of the left front side member 201 surrounds the outside of the upper side face and the lower side face of the left side member 103, the junction of the left front side member 201 and the left side member 103 becomes a closed rectangular shell, and the upper side face and the lower side face of the left front side member 201 are attached to the upper side face and the lower side face of the left side member 103. The left front side member 201 and the left side member 103 are fastened by a first set of bolts 1041 and a second set of bolts 1042.

The connecting strength of the integrated casting 100 and the metal stamping welding parts is further enhanced by sealing the left front longitudinal beam 201, the right front longitudinal beam 202, the left rear longitudinal beam 203 and the right rear longitudinal beam 204 into a rectangle after being overlapped with the connecting end parts of the integrated casting 100; fastening by two sets of bolts of different directions further enhances the strength of the connection of the integrated casting 100 to these metal stamping welds.

At least two bolts 1041 of the first group arranged in the Z direction sequentially penetrate through the upper side surface of the left front side member 201, the upper side surface and the lower side surface of the left side member 103, and the lower side surface of the left front side member 201; at least two second bolts 1042 are disposed in the X direction and pass through the left side surface of the left front side member 201 and the right side surface of the left side member 103.

In any of the foregoing embodiments, it is preferable for the frame module that a plurality of rib plates 107 are vertically connected between the right middle face 404, the right side wall 106, and the lower side face of the right side member 104, which are arranged at intervals; the rib plate 107 is a triangular plate, one side of the rib plate is connected with the lower side surface of the right longitudinal beam 104, and the other side of the rib plate is connected with a stepped surface integrally formed by the right middle surface 404 and the right side wall 106. A plurality of spaced apart webs 107 are disposed along the length of the right stringer 104. Similarly, a plurality of rib plates 107 are vertically connected between the left middle surface 403, the left side wall 105 and the lower side surface of the left longitudinal beam 103, the rib plates 107 are triangular plates, one side of each rib plate is connected with the lower side surface of the left longitudinal beam 103, and the other side of each rib plate is connected with a stepped surface formed by the left middle surface 403 and the left side wall 105. A plurality of spaced apart webs 107 are disposed along the length of the left side rail 103 as shown in fig. 8.

In the above embodiment, it is desirable that the inside of the left side member 103 and the right side member 104 are respectively connected with the end-to-end "V" -shaped reinforcing rib plates arranged along the length direction of the left side member 103 (and/or the right side member 104); the "V" -shaped reinforcing rib is to reinforce the strength inside the openings of the left side member 103 and the right side member 104. The upper and lower sides of the V-shaped reinforcing rib plates extend to the upper and lower sides of the left longitudinal beam 103 and the right longitudinal beam 104; the other side of the V-shaped reinforcing rib plate extends to the right side of the left longitudinal beam 103 or to the left side of the right longitudinal beam 104.

Intermediate flat plates 1033 are provided between the upper and lower sides of the left and right stringers 103, 104, respectively. The middle flat plate 1033 passes through the middle position of the V-shaped reinforcing rib plate, and the middle flat plate 1033 is connected to the right side surface of the left longitudinal beam 103 or the left side surface of the right longitudinal beam 104, so as to play a role in reinforcing the strength and rigidity of the left longitudinal beam 103 and the right longitudinal beam 104. The length of the intermediate plate 1033 is adapted to at least the distance between the front beam 101 and the rear beam 102. The middle plate 1033 serves to reinforce the rigidity of the middle portion of the left and right side members 103, 104 connecting the front and rear cross members 101, 102.

More preferably, the root of the V-shaped reinforcing rib plate and the top of the rib plate 107 meet to form a Y-shaped rib in order. The V-shaped reinforcing rib plate at the upper half part of the Y-shaped rib can effectively decompose the impact force transmitted to the longitudinal beam from the bottom of the frame through the I-shaped reinforcing rib plate at the lower part of the frame, so that the impact force is effectively decomposed and weakened; the materials are distributed on the stress conduction path more, so that the weight of the frame is reduced; in addition, the liquid and other materials flow to the V-shaped reinforcing rib plates through the I-shaped reinforcing rib plates in the casting process, the flow sectional area is increased, so that the flow of the aluminum liquid is more stable, and casting defects such as gas coiling and the like are reduced.

In any of the foregoing embodiments, it is preferable that, as shown in fig. 6, the inside of the front cross member 101 is provided with a reinforcing rib having a "rice" cross structure, and the cross position is provided in a ring shape; the cross section is in a cross structure of a Chinese character 'mi' shape and is connected with the front side surface and the rear side surface of the front cross beam 101; the cross structure is also connected to the top surface of the front cross member 101.

The rear cross member 102 is internally provided with reinforcing ribs in a "rice" or "X" cross structure, and the cross positions are arranged in a ring shape. The cross-section is a "rice" cross-structure or an "X" cross-structure that connects the front and rear sides of the rear cross-beam 102, as well as the top surface of the rear cross-beam 102.

The novel steering system has the advantages that the reinforcing ribs with the cross structures of the rice shape or the X shape avoid stress concentration, and the driving safety is further improved; the junctions of the rice-shaped ribs are connected by circular rings, so that the casting hotknot is reduced, the gas is avoided, and the sequential filling is realized in the casting process. The stability of liquid flow in the flowing and forming process of materials such as aluminum liquid and the like and the compactness of the formed materials are improved, and the safety service life of the frame is greatly prolonged.

In any of the foregoing embodiments, it is preferable that the reinforcing plate 303 is encapsulated at the bottom surface of the intermediate position in the longitudinal direction of the front cross member 101. The middle portion of the front cross member 101 is reinforced by a reinforcing plate 303 for preventing breakage. In addition, the intermediate position of the front cross member 101 may be widened.

The lower side of the front cross beam 101 is connected with the reinforcing plate 303 made of aluminum alloy through bolts, so that the U-shaped structure with three closed surfaces is approximately a rectangular joint structure with four closed surfaces, the rigidity meets the requirement, and the stability is further improved. The boundary of the reinforcing plate 303 follows the contour of the front cross member 101, and the middle part of the reinforcing plate 303 is designed to be 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.

The Chinese patent publication No. CN 218536851U discloses a high-pressure casting frame type rear auxiliary frame, and the reinforcing plate is arranged at the bottom of the frame auxiliary frame, so that the strength and rigidity of the auxiliary frame can be enhanced, but the whole closed structure reinforcing plate greatly increases the weight. In this embodiment, only one reinforcing plate 303 is added to the front beam 101, so that the area of the reinforcing plate 303 in the prior art is effectively reduced.

In the prior art, the front and rear cross beams and the left and right longitudinal beams are both inverted U-shaped cross sections, the opening directions are the same and face the Z direction, and in complex environments with various working conditions, the inverted U-shaped cross sections are beneficial to resisting deformation of the front and rear cross beams, but are unsuitable for the left and right longitudinal beams because the left and right longitudinal beams bear more torsional moment. The front and rear cross beams of the frame module and the frame of the invention are of U-shaped cross sections, and the left and right longitudinal beams are respectivelyAnd/>The cross section is shaped, the opening faces to the outer side of the frame, and the cross section combination can resist torsional deformation better; in the prior art, the front and rear cross beams and the left and right longitudinal beams are almost at the same height, and although the structural rigidity of the left and right longitudinal beams is improved through an upward-bending arc-shaped design, the structural rigidity is still insufficient, so that the reinforcing plate is connected with the bottoms of the front and rear cross beams to improve the overall rigidity of the auxiliary frame. The frame module and the frame can bear stronger working condition stress than the auxiliary frame.

In any of the foregoing embodiments, preferably, the material of the frame is an aluminum magnesium alloy with silicon added. Selecting high-strength aluminum magnesium alloy to be formed by one-step die casting through a high-vacuum high-pressure die casting process; the preferable application number of the material is 202310298947.4, and the name of the material is an alloy material recorded in aluminum-magnesium-silicon alloy and a preparation method thereof; or adopting a material with the national standard alloy code ZL303 and the trade mark ZAlMg Si 1; or adding magnesium element, silicon element and proper amount of titanium and vanadium element on the basis of ZAlMg Si1 to enable the weight of magnesium in the final material to reach 6.5-7.5%, and the weight of silicon to reach 2.5-3.5%.

In any of the foregoing embodiments, it is preferable that the left steering bracket 301 is mounted at the position where the integrated casting 100 is connected to the left front side member 201, and the right steering bracket 302 is mounted at the position where the integrated casting 100 is connected to the right front side member 202. The left front side member 201, the left steering bracket 301, and the left side member 103 are fastened together by bolts; the right front side rail 202, the right steering bracket 302, and the right side rail 104 are fastened together by bolts.

In any of the foregoing embodiments, it is preferable that the left rectangular concave structure 10 is provided beside the buckling position of the upper side surface of the left side member 103 and the left front side member 201, and the right rectangular concave structure 10' is provided beside the buckling position of the upper side surface of the right side member 104 and the right front side member 202; 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 103 respectively, and reinforcing ribs with different directions are connected between opposite side surfaces in the left rectangular concave cavity structure 10 and the right rectangular concave cavity structure 10' in combination with the structures shown in fig. 3, 5, 7 and 9.

More preferably, one of the reinforcing ribs is distributed in a direction parallel to the length direction of the front cross member 101, and the other reinforcing rib is arranged obliquely with a space therebetween.

Because the junction of the front cross beam 101, the left longitudinal beam 103 and the right longitudinal beam 104 is stressed and loaded with complex force, according to the finite element analysis and verification, in combination with the feasibility of the casting process, a left rectangular concave cavity structure 10 and a right rectangular concave cavity structure 10' are added at the junction of the left longitudinal beam 103 and the front left main frame and the junction of the right longitudinal beam 104 and the front right main frame, namely, the surfaces of the left longitudinal beam 103 and the right longitudinal beam 104 are concave and a rectangular cavity is formed. The two rectangular cavity structures can effectively increase the strength in the z direction and the rigidity in the y direction. And the strength in the x and y directions is enhanced by being matched with the reinforcing rib structures in different directions, meanwhile, the front ends of the left longitudinal beam 103 and the right longitudinal beam 104 are better in metal fluidity and better in mechanical property in the casting process, one reinforcing rib is distributed along the y direction, so that the strength of the front auxiliary frame meets the requirement, and the driving safety is further improved.

It can be understood that the left longitudinal beam, the right longitudinal beam, the front cross beam and the rear cross beam are arranged at different heights, the cradle-shaped frame structure formed in space is formed by the 'well' -shaped structure projected in the Z direction and the 'U' -shaped section projected in the X direction, the integral rigidity of the frame is greatly improved, reinforcing plates are not required to be arranged between the front cross beam and the rear cross beam for reinforcement, and a larger assembly space is reserved between the front cross beam and the rear cross beam for arranging other devices such as a power assembly.

For example, as shown in fig. 5 and 6, a wheel-up limit device 1071, a wheel-down limit device 108, a damper upper mounting point 110, an upper control arm mounting point 111, a lower left control arm mounting point 113, a lower right control arm mounting point 113', a vehicle body mounting point 109, and a powertrain mounting point 112 are provided on the integrated casting 100.

The wheel jump limiting device 1071 and the wheel jump limiting device 108 are arranged on the plane where the front cross beam 101 is positioned and positioned at the outer side where the two ends of the front cross beam 101 are intersected with the left and right longitudinal beams; the shock absorber upper mounting point 110 and the upper control arm mounting point 111 are arranged on the plane where the front cross beam 101 is positioned and above the left and right longitudinal beams 103 and 104; the lower left control arm mounting point 113, lower right control arm mounting point 113' may be distributed at the bottom of the frame module on both ends of the front cross member 101. The two body mounting points 109 may lie in a plane with the rear cross member 102 and above the intersection of the left and right side members. The powertrain mounting points 112 are three, one being located in the middle of the rear cross member 102 and the other two being located inboard of the intersection of the front cross member 101 with the left and right stringers.

It will be appreciated that wheel jump stop 1071, wheel jump stop 108, shock absorber upper mounting point 110, upper control arm mounting point 111, lower left control arm mounting point 113, lower right control arm mounting point 113', body mounting point 109 and powertrain mounting point 112 may be highly integrated at the intersection of the "well" shaped frame modules.

The above description is only illustrative of the preferred embodiments of the present invention and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the invention referred to in the present invention is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present invention (but not limited to) having similar functions are replaced with each other.

Claims (10)

1. The frame module is characterized by being formed by integrally cast components and comprising 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, wherein the two transverse beams are arranged between the two longitudinal beams, the vertical height of the transverse beams is lower than that of the longitudinal beams, and the transverse beams are respectively connected with the longitudinal beams on two sides through side wing plates, so that a frame structure which is concave at the transverse beams as a whole is formed;

The cross beams and the longitudinal beams are U-shaped in main body cross sections, the U-shaped openings of the two longitudinal beams face to two sides in a way of deviating from each other, and the U-shaped openings of the two cross beams face to the lower side and are provided with vertical flange surfaces opposite to each other on the inner side of the frame body structure;

two battens which correspond to the longitudinal beams and extend continuously in the longitudinal direction are arranged between the two cross beams, the battens form vertical plate surfaces which are opposite to each other on the inner side of the frame body structure, and the vertical flange surfaces of the two cross beams are connected with the vertical plate surfaces of the two battens in a surrounding manner to form a closed rectangular frame.

2. The frame module according to claim 1, characterized in that the components are constructed as an integrated casting (100) of a bilateral symmetry structure, wherein two of the stringers are formed as left (103) and right (104) stringers on both sides, and two of the cross-beams are formed as front (101) and rear (102) cross-beams on both sides; a left longitudinal beam (103) which is opened to the left and a right longitudinal beam (104) which is opened to the right are arranged in mirror symmetry with respect to the middle surface of the frame module in the left-right direction;

A front cross beam (101) with a downward opening and a rear cross beam (102) with a downward opening are arranged below the left longitudinal beam (103) and the right longitudinal beam (104);

The two side wings are formed into a left side wall (105) and a right side wall (106) which are arranged in mirror symmetry with respect to a middle plane of the frame module in the left-right direction; the left side wall (105) extends downwards and rightwards from the bottom middle position of the right side surface of the left longitudinal beam (103); the right side wall (106) extends downwards and leftwards from the bottom middle position of the left side surface of the right longitudinal beam (104); the left end and the right end of the front cross beam (101) and the rear cross beam (102) respectively extend to a left side wall (105) and a right side wall (106);

The two battens are formed into a left middle surface (403) and a right middle surface (404) which are arranged in mirror symmetry with respect to the middle surface of the frame module in the left-right direction, and the rear side surface of the front cross beam (101) and the left end of the front side surface of the rear cross beam (102) are connected through the left middle surface (403); the rear side surface of the front cross beam (101) is connected with the right end of the front side surface of the rear cross beam (102) through a right middle surface (404); the upper side of the left middle surface (403) is connected with the lower side of the left side wall (105); the upper side of the right middle surface (404) is connected with the lower side of the right side wall (106);

The left side wall (105), the right side wall (106), the front cross beam (101), the rear cross beam (102), the left middle surface (403) and the right middle surface (404) together form the rectangular frame which is integrally positioned on the same height; the front end and the rear end of the left longitudinal beam (103) and the right longitudinal beam (104) respectively extend to the outer sides of the rectangular frames;

the front side and the rear side of the front cross beam (101) and the front side and the rear side of the rear cross beam (102) extend obliquely upward and outward to the outer side of the rectangular frame, respectively.

3. The frame module according to claim 2, wherein a plurality of spaced apart rib plates (107) are vertically connected between the right middle surface (404), the right side wall (106), and the lower side surface of the right side rail (104);

a plurality of rib plates (107) which are arranged at intervals are vertically connected among the left middle surface (403), the left side wall (105) and the lower side surface of the left longitudinal beam (103);

The inside of the left longitudinal beam (103) and the inside of the right longitudinal beam (104) are respectively connected with end-to-end V-shaped reinforcing rib plates which are arranged along the length direction of the longitudinal beam;

Intermediate flat plates (1033) are respectively arranged between the upper side surfaces and the lower side surfaces of the left longitudinal beam (103) and the right longitudinal beam (104).

4. The frame module according to claim 2, characterized in that the inside of the front cross member (101) is provided with a reinforcing rib in a "rice" -shaped cross structure, and the cross position is provided in a ring shape;

The inside of the rear cross beam (102) is provided with reinforcing ribs in a 'rice' -shaped or 'X' -shaped cross structure, and the cross position is annular.

5. The frame module according to claim 2, wherein a reinforcing plate (303) is encapsulated at a bottom surface of a lengthwise middle position of the front cross member (101).

6. The frame module according to any one of claims 1 to 5, wherein the material of the frame module is an aluminum magnesium alloy with silicon added.

7. A frame for an automobile, characterized in that the frame comprises a frame module as claimed in any one of claims 2 to 6;

the vehicle further comprises a left front longitudinal beam (201), a right front longitudinal beam (202), a left rear longitudinal beam (203) and a right rear longitudinal beam (204);

the front end and the rear end of the left longitudinal beam (103) are respectively connected with the left front longitudinal beam (201) and the left rear longitudinal beam (203) through at least two groups of bolts with different axial orientations; the front end and the rear end of the right longitudinal beam (104) are respectively connected with the right front longitudinal beam (202) and the right rear longitudinal beam (204) through at least two groups of bolts with different axial orientations.

8. The frame according to claim 7, wherein the ends of the left front side member (201), the right front side member (202), the left rear side member (203) and the right rear side member (204) connected with the frame module are provided with an opening structure, the opening direction of the opening structure is opposite to the opening direction of the left side member (103) and the right side member (104), so that the ends of the left front side member (201), the right front side member (202), the left rear side member (203) and the right rear side member (204) can be correspondingly buckled outside the left side member (103) and the right side member (104) and close the openings of the ends of the left side member (103) and the right side member (104);

the two sets of bolts at least comprise 2 bolts which are arranged in the up-down direction and 2 bolts which are arranged in the front-back direction.

9. The frame according to claim 7, wherein a left steering bracket (301) is mounted at a position where the frame module is connected to the left front side member (201), and a right steering bracket (302) is mounted at a position where the frame module is connected to the right front side member (202).

10. The frame according to claim 7, characterized in that a left rectangular concave cavity structure (10) is arranged beside the buckling position of the upper side surface of the left longitudinal beam (103) and the left front longitudinal beam (201), and a right rectangular concave cavity structure (10') is arranged beside the buckling position of the upper side surface of the right longitudinal beam (104) and the right front longitudinal beam (202); 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, and reinforcing ribs with different directions are respectively connected between opposite side surfaces in the left rectangular concave cavity structure (10) and the right rectangular concave cavity structure (10'); one of the reinforcing ribs is distributed along the length direction parallel to the front cross beam (101) in the left rectangular concave cavity structure (10) or the right rectangular concave cavity structure (10'), the other reinforcing rib is obliquely arranged, and a space is reserved between the two reinforcing ribs.