CN207565686U - A kind of body frame structure for automotive - Google Patents

Abstract

The utility model provides a kind of body frame structure for automotive, belongs to vehicular field.The body frame structure for automotive is used for freight truck, including the multiple longerons being trapezoidal layout and multiple crossbeams, each longeron and each crossbeam are aluminum alloy extrusion section bar, and each longeron and each crossbeam are the hollow structure that section is in " returning " font with opening, each crossbeam is connected to by fastener at the longeron.The longitudinal and cross beam of the body frame structure for automotive of the utility model is aluminum alloy extrusion section bar, and the longeron is all connected with the crossbeam using fastener connection mode, the weld strength occurred when solving the problems, such as in the prior art using welding manner connection is inadequate, and material is aluminium alloy, effectively reduces vehicle frame weight.

Description

a frame structure

technical field

The utility model relates to the field of vehicles, in particular to a vehicle frame structure.

Background technique

With the depletion of oil resources and the aggravation of environmental pollution, the emission requirements for automobiles are becoming more and more stringent. The lightweight of the whole vehicle is one of the effective ways to reduce emissions, and the application of aluminum alloy on the frame can effectively reduce the weight of the whole vehicle.

At present, the application of domestic and foreign aluminum alloy frames is mainly in passenger vehicles (M category), light cargo vehicles (N1 category) and trailers (O category). Among them, the frame of N1 models adopts a trapezoidal frame structure, the longitudinal and transverse beams are bent by aluminum plates, and the connection between the transverse beams and longitudinal beams adopts welding technology.

However, the current cargo vehicles (Class N) all adopt welded structures, and the strength of the welds at the welds may be insufficient, and the welded structures increase the weight of the frame structure.

Utility model content

One purpose of the present utility model is to provide a frame structure, which can effectively solve the insufficient strength of the weld seam and reduce the weight of the frame structure.

In particular, the utility model provides a frame structure for a cargo vehicle, comprising a plurality of longitudinal beams and a plurality of cross beams arranged in a trapezoidal shape,

Each of the longitudinal beams and each of the cross beams is an aluminum alloy extruded profile, and each of the longitudinal beams and each of the cross beams is a hollow structure with a "back" shape with an opening in section, and each The crossbeams are all connected to the longitudinal beams by fasteners.

Optionally, the longitudinal beams include a left longitudinal beam and a right longitudinal beam arranged in parallel, both of the left longitudinal beams and the right longitudinal beams extend along the front-rear direction of the cargo vehicle, and each of the transverse beams is at the Extending in the width direction of the freight vehicle, one end of each cross beam is connected to the left longitudinal beam, and the other end is connected to the right longitudinal beam, and the plurality of cross beams are arranged at intervals.

Optionally, the section of the stringer includes an upper wing surface of the stringer and a lower wing surface of the stringer arranged up and down, and a left side of the stringer and a right side of the stringer arranged left and right, and the middle part of the left side of the stringer is broken opening to form the stringer opening;

The left side beam and the right side beam are arranged such that a side beam left side of the left side beam faces a side beam left side of the right side beam.

Optionally, the cross-section of the crossbeam includes the upper and lower airfoils of the crossbeam arranged up and down, and the left side of the crossbeam and the right side of the crossbeam arranged left and right, and the middle part of the left side of the crossbeam is broken to form a crossbeam opening department;

Each of the beams is arranged such that the left side of the corresponding beam faces the front or the rear of the cargo vehicle.

Optionally, a connection plate is provided at the connection between each longitudinal beam and the cross beam, for detachably connecting the cross beam.

Optionally, the connecting plate is a thin plate, including a body and a boss, the body is a flat plate, the cross section of the boss is in the shape of a "back", and the middle part is a boss opening through the connecting plate, And the side wall of the boss protruding from the body is formed around;

The longitudinal beam is connected to the body of the connecting plate through fasteners;

The side of the longitudinal beam facing away from the opening is provided with a longitudinal beam opening aligned with the opening of the boss, the cross beam passes through the opening of the longitudinal beam and the opening of the boss, and the cross beam passes through the fastener It is connected to the side wall of the boss of the connecting plate.

Optionally, both the cross beam and the longitudinal beam are connected to the connecting plate through bolts.

Optionally, it also includes a longitudinal beam reinforcing plate, which is a strip-shaped plate, and its two ends in the length direction are respectively connected to both sides of the opening of the longitudinal beam through fasteners.

Optionally, the longitudinal beam reinforcement plate is connected to the longitudinal beam by bolts.

Optionally, the size of the section of the longitudinal beam and the cross beam is set to match the stress of the vehicle frame structure.

The longitudinal beams and crossbeams of the vehicle frame structure of the utility model are all extruded aluminum alloy profiles, and the longitudinal beams and the crossbeams are all connected by fasteners, which solves the problem that occurs when welding is used in the prior art. The welding seam strength is not enough, and the materials are all aluminum alloy, which effectively reduces the weight of the frame. In addition, the cross-beam and the longitudinal beam have a "back"-shaped cross-sectional shape with an opening, which can further reduce the weight of the frame structure.

Further, the longitudinal beams and the cross beams are extruded, so the cross-sectional shapes of the longitudinal beams and the cross beams can be precisely controlled, and it is convenient to manufacture profiles with variable cross-sections, so that the structure can meet the requirements of large load and high load at the same time. Torque stiffness requirements.

According to the following detailed description of specific embodiments of the utility model in conjunction with the accompanying drawings, those skilled in the art will be more aware of the above and other objectives, advantages and features of the utility model.

Description of drawings

Hereinafter, some specific embodiments of the present utility model will be described in detail in an exemplary rather than restrictive manner with reference to the accompanying drawings. The same reference numerals in the drawings designate the same or similar parts or parts. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the attached picture:

Fig. 1 is a schematic structural view of a vehicle frame structure according to an embodiment of the present invention;

Fig. 2 is a schematic cross-sectional view of a longitudinal beam according to an embodiment of the present invention;

Fig. 3 is a schematic cross-sectional view of a beam according to an embodiment of the present invention;

Fig. 4 is a structural schematic diagram of the connection between the longitudinal beam and the cross beam according to an embodiment of the present invention.

Detailed ways

Fig. 1 is a structural schematic diagram of a vehicle frame structure according to an embodiment of the present invention. The frame structure 100 is used for a cargo vehicle. As shown in FIG. 1 , the frame structure 100 includes a plurality of longitudinal beams 10 and a plurality of cross beams 20 arranged in a trapezoidal shape, that is, a trapezoidal frame, also known as a formation vehicle. shelf. Each of the longitudinal beams 10 and each of the cross beams 20 is an aluminum alloy extruded profile, and each of the cross beams 20 and each of the longitudinal beams 10 is a hollow structure with a cross-section in the shape of a "back" with an opening, Each of the cross beams 20 is connected to the longitudinal beam 10 by a fastener, and the fastener may be a bolt.

The longitudinal beam 10 and the crossbeam 20 of the vehicle frame structure 100 of the present utility model are aluminum alloy extruded profiles, and the longitudinal beam 10 and the crossbeam 20 are all connected by fasteners, which solves the problem of The problem of insufficient weld strength when welding is connected, and the materials are all aluminum alloy, which effectively reduces the weight of the frame. The cross-beam 20 and the longitudinal beam 10 use a cross-sectional shape of a "back" shape with an opening, which can further reduce the weight of the frame structure 100 .

Further, the longitudinal beams 10 and the cross beams 20 are extruded, so the cross-sectional shapes of the longitudinal beams 10 and the cross beams 20 can be precisely controlled, which facilitates the manufacture of profiles with variable cross-sections, so that the structure can simultaneously satisfy large Requirements for load bearing and high torsional stiffness.

In one embodiment of the present utility model, as shown in FIG. 1 , the longitudinal beam 10 includes a left longitudinal beam 11 and a right longitudinal beam 12 arranged in parallel, and both the left longitudinal beam 11 and the right longitudinal beam 12 are arranged along the The front-to-back direction of the truck extends, and each of the beams 20 extends in the left-right direction (width direction) of the truck. One end of each of the beams 20 is connected to the left longitudinal beam 11, and the other end is connected to On the right longitudinal beam 12, the plurality of beams 20 are arranged at intervals, so that the vehicle frame forms a straight-through trapezoidal structure. The straight longitudinal beam 10 in the front-rear direction of the vehicle can ensure the layout of the entire vehicle, and no large changes will occur when the structure is used.

Fig. 2 is a schematic cross-sectional view of a longitudinal beam according to an embodiment of the present invention. Fig. 3 is a schematic cross-sectional view of a beam according to an embodiment of the present invention. In one embodiment, as shown in FIG. 2 , the cross-section of the stringer 10 includes the upper wing surface 101 and the lower wing surface 102 of the stringer arranged up and down, and the left side of the stringer 103 and the right side of the stringer arranged left and right. The middle part of the left side 103 of the side beam 104 is broken to form a side beam opening 105 . As shown in FIG. 3 , the section of the beam 20 includes an upper wing surface 201 of the beam and a lower wing surface 202 of the beam arranged up and down, and a left side of the beam 203 and a right side of the beam 204 arranged left and right. The middle part of 203 is disconnected to form a beam opening 205 .

In one embodiment, the left longitudinal beam 11 and the right longitudinal beam 12 are arranged such that the left longitudinal beam 103 of the left longitudinal beam 11 faces the left longitudinal beam 103 of the right longitudinal beam 12; A cross beam 20 is arranged such that the corresponding left side 203 of the cross beam faces the front or rear of the truck.

Fig. 4 is a structural schematic diagram of the connection between the longitudinal beam and the cross beam according to an embodiment of the present invention. In another implementation, as shown in FIG. 4 , a connection plate 30 is provided at the joint between each longitudinal beam 10 and the cross beam 20 for detachably connecting the cross beam 20 . The connecting plate 30 is a thin plate, including a body 31 and a boss 32, the body 31 is a flat plate, and the cross section of the boss 32 is in the shape of "back", and the middle part is a boss passing through the connecting plate 30 Opening 301, and the boss side wall 302 that protrudes from the body 31 is formed around; the longitudinal beam 10 is connected to the body 31 of the connecting plate 30 by fasteners; the longitudinal beam 10 faces away from the opening A longitudinal beam opening aligned with the boss opening 301 is provided on one side, the cross beam 20 passes through the longitudinal beam opening and the boss opening 301, and the cross beam 20 is connected to the At the side wall 302 of the boss of the connecting plate 30 .

In one embodiment, as shown in FIG. 4 , the vehicle frame structure 100 further includes a longitudinal beam reinforcing plate 40, which is a strip-shaped plate, and its two ends in the length direction are respectively connected to the longitudinal beam by fasteners. Both sides of the beam opening 105 . In one embodiment, both the cross beam 20 and the longitudinal beam 10 are connected to the connecting plate 30 through bolts, and the longitudinal beam reinforcing plate 40 is connected to the longitudinal beam 10 through bolts. Specifically, as shown in FIG. 4 , both the upper wing surface 201 and the lower wing surface 202 of the beam 20 are fixed to the side wall 302 of the boss by first bolts 701 , and the left side of the beam 20 is Both the side 203 and the right side of the crossbeam 204 are fixed to the side wall 302 of the boss by the second bolt 702; At the body 31 : the longitudinal beam reinforcing plate 40 is fixedly connected to both sides of the opening of the longitudinal beam 10 through the fourth bolt 704 . This bolt connection method is convenient for replacing the beam 20, the longitudinal beam 10 or the longitudinal beam reinforcing plate 40, which is convenient for after-sales maintenance and also reduces the cost of customer use and maintenance.

Preferably, the size of the section of the longitudinal beam 10 and the cross beam 20 is determined according to the stress of the vehicle frame structure 100 . In one embodiment, as shown in FIG. 2 , the thickness of the upper airfoil 101 of the longitudinal beam 10 is smaller than the thickness of the lower airfoil 102 of the longitudinal beam. In other implementations not shown, the upper airfoil of the longitudinal beam The thickness of 101 can be greater than or equal to the thickness of the lower airfoil 102 of the longitudinal beam, and the thickness of its section can be adjusted and selected according to the actual stress of the frame structure 100 of a specific vehicle. Other cross-sectional dimensions of the longitudinal beam 10 and cross-sectional dimensions of the crossbeam 20 can also be adjusted according to actual stress conditions.

In one embodiment, the vehicle frame structure 100 further includes a bent tube beam 50 and a back beam 60 arranged parallel to the cross beam 20 , which are respectively used to connect the leaf spring and the balanced suspension of the vehicle.

So far, those skilled in the art should recognize that although a number of exemplary embodiments of the present invention have been shown and described in detail herein, they can still be used according to the present invention without departing from the spirit and scope of the present invention. Many other variations or modifications that conform to the principles of the utility model are directly determined or derived from the disclosed content of the new model. Therefore, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (10)

1. a kind of body frame structure for automotive for freight truck, exists including the multiple longerons being trapezoidal layout and multiple crossbeams, feature In,

Each longeron and each crossbeam are aluminum alloy extrusion section bar, and each longeron and each crossbeam It is the hollow structure that section is in " returning " font with opening, each crossbeam is connected to the longeron by fastener Place.

2. body frame structure for automotive according to claim 1, which is characterized in that the longeron includes left longeron and the right side of parallel arrangement Longeron, the left longeron and the right vertical beam extend each along the front-rear direction of the freight truck, and each crossbeam exists Extend in the width direction of the freight truck, one end of each crossbeam is connected to the left longeron, and the other end is connected to The right vertical beam, the multiple girder space arrangement.

3. body frame structure for automotive according to claim 2, which is characterized in that the section of the longeron includes the longeron arranged up and down Top airfoil and longeron lower aerofoil and the longeron left side of left and right arrangement and longeron right side, the middle part of the longeron left side Disconnection forms longeron opening portion；

The longeron that the left longeron and the right vertical beam are arranged as longeron left side towards the right vertical beam of the left longeron is left Side.

4. body frame structure for automotive according to claim 2, which is characterized in that the section of the crossbeam includes the crossbeam arranged up and down Top airfoil and crossbeam lower aerofoil and the crossbeam left side of left and right arrangement and crossbeam right side, the middle part of the crossbeam left side Disconnection forms crossbeam opening portion；

Each crossbeam is arranged as its corresponding described crossbeam left side towards the front or behind of the freight truck.

5. according to the body frame structure for automotive described in any one of claim 1-4, which is characterized in that each longeron with the horizontal stroke The junction of beam is equipped with a connecting plate, for the detachably connected crossbeam.

6. body frame structure for automotive according to claim 5, which is characterized in that the connecting plate is sheet member, including ontology and convex Platform, the ontology are flat part, and in " returning " font, middle part is opened to penetrate through the boss of the connecting plate in the section of the boss Mouthful, and surrounding forms the plateau sidewall for being raised in the ontology；

The longeron is connected to by fastener at the ontology of the connecting plate；

The longeron is equipped with the longeron opening being aligned with the boss openings away from the side of the opening, and the crossbeam passes through institute Longeron opening and the boss openings are stated, and the crossbeam is connected to by fastener at the plateau sidewall of the connecting plate.

7. body frame structure for automotive according to claim 6, which is characterized in that the crossbeam and the longeron pass through bolt and institute Connecting plate is stated to be connected.

8. body frame structure for automotive according to claim 6, which is characterized in that longitudinal beam reinforcing plate is further included, is strip plate, Both ends on length direction are connected to the both sides of the longeron opening portion by fastener respectively.

9. body frame structure for automotive according to claim 8, which is characterized in that the longitudinal beam reinforcing plate is bolted to described At longeron.

10. body frame structure for automotive according to claim 1, which is characterized in that the size in the section of the longeron and the crossbeam It is arranged to match with the stressing conditions of the body frame structure for automotive.