Combined type longitudinal beam structure aluminum alloy frame

Abstract

The utility model belongs to the technical field of aluminum alloy frames, and relates to a combined type longitudinal beam structure aluminum alloy frame which comprises a right longitudinal beam and a left longitudinal beam, the right longitudinal beam and the left longitudinal beam are arranged in parallel, the front ends of the right longitudinal beam and the left longitudinal beam are respectively connected with a stiffening beam assembly to form longitudinal beams, and the longitudinal beams are connected through an end cross beam and a cross beam assembly. The reinforcing beam assembly comprises an upper connecting beam and a lower connecting beam, the upper connecting beam and the lower connecting beam are arranged up and down, the upper connecting beam and the lower connecting beam are connected and fixed through a reinforcing support, and the upper connecting beam and the lower connecting beam are installed on the longitudinal beam reinforcing plate which is vertically arranged at the same time. The stiffening beam assembly is combined and connected with the longitudinal beam with the U-shaped section, so that the problem that an integrated aluminum alloy frame longitudinal beam adopts an aluminum alloy with the U-shaped section and cannot be bent into a gooseneck structure is solved; the aluminum alloy frame has the characteristics of light weight, high structural strength, high assembly precision, low process difficulty, easiness in popularization and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of aluminum alloy frames, and in particular relates to an aluminum alloy frame with a combined longitudinal beam structure. The utility model can be used for commercial vehicles and passenger vehicles with a load-bearing frame structure. Background Art

[0002] Traditional vehicle frames are made of steel, with two longitudinal beams of "U"-shaped cross-section, which run through the load-bearing parts of the vehicle. Aluminum alloy frames are characterized by light weight, high strength, and corrosion resistance, and are gradually being used in the field of automotive technology. At present, most of the longitudinal beams of one-piece aluminum alloy frames are developed using aluminum instead of steel, usually using "U"-shaped, large-section aluminum alloy profiles. Since the ductility of aluminum profiles is lower than that of steel, and the height of the "U"-shaped cross-section in the Z direction is much greater than the width in the Y direction, it is impossible to bend into a gooseneck structure, which cannot meet the requirements of the vehicle layout, greatly limiting its application in the automotive field.

[0003] Chinese utility model patent authorization announcement number: CN204279636 U, authorization announcement date: 2015.04.22, titled "A gooseneck aluminum alloy frame longitudinal beam" discloses a gooseneck aluminum alloy frame longitudinal beam, which solves the process problem that the "I"-shaped aluminum alloy profile of the longitudinal beam cannot be bent. As we all know, the frame stiffness will directly affect the handling and driving experience of the car. The "I"-shaped aluminum alloy frame longitudinal beam has a great sacrifice of the driving comfort of the car on bumpy roads due to its excessive bending stiffness. Therefore, even if the problem of the "I"-shaped aluminum alloy profile that cannot be bent is solved, the above process cannot be used to solve the bending process problem of the "U"-shaped aluminum alloy profile with a conventional cross-section. Therefore, solving the bending problem of the "U"-shaped aluminum alloy frame longitudinal beam is an urgent problem to be solved in the development of the frame using aluminum instead of steel. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the integrated aluminum alloy frame longitudinal beam adopts a "U"-shaped cross-section aluminum alloy that cannot be bent into a gooseneck structure and cannot meet the requirements of the whole vehicle layout. A combined longitudinal beam structure aluminum alloy frame is proposed, and the combined longitudinal beam structure is used as a frame to replace the integrated aluminum alloy frame longitudinal beam.

[0005] A combined longitudinal beam structure aluminum alloy frame, comprising

[0006] A right longitudinal beam and a left longitudinal beam, wherein the right longitudinal beam and the left longitudinal beam are arranged in parallel, and the front ends of the right longitudinal beam and the left longitudinal beam are respectively connected to a reinforcing beam assembly to form a longitudinal beam, and the longitudinal beams are connected by an end cross beam and a cross beam assembly;

[0007] A reinforcing beam assembly comprises an upper connecting beam and a lower connecting beam, wherein the upper connecting beam and the lower connecting beam are arranged one above the other and are connected and fixed by a reinforcing bracket, and the upper connecting beam and the lower connecting beam are simultaneously installed on a vertically arranged longitudinal beam reinforcement plate.

[0008] The connecting end of one of the reinforcing beam assemblies is inserted into the front end of the left longitudinal beam, and the upper connecting beam is connected to the upper flange of the left longitudinal beam by bolts, and the lower connecting beam is connected to the lower flange of the left longitudinal beam by bolts; the connecting end of the other reinforcing beam is inserted into the front end of the right longitudinal beam, and the upper connecting beam is connected to the upper flange of the right longitudinal beam by bolts, and the lower connecting beam is connected to the lower flange of the right longitudinal beam by bolts.

[0009] An outer beam reinforcement plate is provided at the connection between the reinforcing beam assembly and the left longitudinal beam, one end of the outer beam reinforcement plate is fixed to the left longitudinal beam by bolts, and the other end is fixed to the longitudinal beam reinforcement plate of the left longitudinal beam by bolts; an outer beam reinforcement plate is provided at the connection between the reinforcing beam and the right longitudinal beam, one end of the outer beam reinforcement plate is fixed to the right longitudinal beam by bolts, and the other end is fixed to the longitudinal beam reinforcement plate of the right longitudinal beam by bolts.

[0010] The two end cross beams are located at the two ends of the longitudinal beam, and the two ends of the end cross beam are respectively plugged into the corresponding longitudinal beam and fixed by bolts.

[0011] A plurality of the cross beam assemblies are arranged on the longitudinal beams between the two end cross beams.

[0012] The crossbeam assembly comprises a crossbeam, and both ends of the crossbeam are respectively connected with connecting pieces by bolts. The connecting pieces at both ends of the crossbeam assembly are installed on the longitudinal beam and fixed by bolts.

[0013] The technical effects of the utility model are:

[0014] The utility model solves the problem that the longitudinal beam of the one-piece aluminum alloy frame adopts the "U"-shaped cross-section aluminum alloy and cannot be bent into a gooseneck structure by combining and connecting the reinforcing beam assembly with the longitudinal beam with a "U"-shaped cross-section; the connection strength between the longitudinal beam and the reinforcing beam assembly is effectively improved by setting the longitudinal beam reinforcement plate, thereby compensating for the loss of the overall structural strength of the frame after the longitudinal beam is cut off.

[0015] The utility model replaces the integrated bent longitudinal beam structure with a combined longitudinal beam structure, solving the technical problem that the longitudinal beam cannot be bent into a gooseneck structure due to the special shape and cross-section of the large-section aluminum alloy profile. The aluminum alloy frame has the characteristics of light weight, high structural strength, high assembly precision, low process difficulty, and easy promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the aluminum alloy frame with combined longitudinal beam structure of the utility model;

[0017] Figure 2Partial schematic diagram of the utility model combined longitudinal beam structure aluminum alloy frame Figure 1 ;

[0018] Figure 3 Partial schematic diagram of the utility model combined longitudinal beam structure aluminum alloy frame Figure 2 ;

[0019] Figure 4 Schematic diagram of the crossbeam assembly in the aluminum alloy frame with combined longitudinal beam structure of the utility model;

[0020] 1-left longitudinal beam, 2-right longitudinal beam, 3-end cross beam, 4-cross beam assembly, 5-beam outer reinforcement plate, 6-longitudinal beam reinforcement plate, 7-upper connecting beam, 8-lower connecting beam, 9-reinforcement bracket, 10-cross beam, 11-connecting parts. DETAILED DESCRIPTION

[0021] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] Figures 1 to 4 As shown, a combined longitudinal beam structure aluminum alloy frame includes

[0023] A right longitudinal beam 2 and a left longitudinal beam 1, wherein the right longitudinal beam 2 and the left longitudinal beam 1 are arranged in parallel, and the front ends of the right longitudinal beam 2 and the left longitudinal beam 1 are respectively connected to a reinforcing beam assembly to form a longitudinal beam, and the longitudinal beams are connected by an end cross beam 3 and a cross beam assembly 4;

[0024] The reinforcing beam assembly includes an upper connecting beam 7 and a lower connecting beam 8. The upper connecting beam 7 and the lower connecting beam 8 are arranged one above the other and connected and fixed by a reinforcing bracket 9. The upper connecting beam 7 and the lower connecting beam 8 are supported and reinforced by the reinforcing bracket 9. The upper connecting beam 7 and the lower connecting beam 8 are simultaneously installed on a longitudinal beam reinforcing plate 6 arranged vertically, and the upper connecting beam 7 and the lower connecting beam 8 are further reinforced by the longitudinal beam reinforcing plate 6. The setting of the longitudinal beam reinforcing plate effectively improves the connection strength between the longitudinal beam and the reinforcing beam assembly, and makes up for the loss of the overall structural strength of the frame after the longitudinal beam is cut off.

[0025] In this embodiment, the right longitudinal beam 2, the left longitudinal beam 1, the end cross beam 3 and the cross beam assembly 4 are all made of aluminum alloy profiles.

[0026] In this embodiment, the upper connecting beam 7 and the lower connecting beam 8 are formed by bending a rectangular aluminum alloy profile with a width of 50 mm, and the upper connecting beam 7 and the lower connecting beam 8 are common parts.

[0027] During installation, the two reinforcing beam assemblies are respectively installed to the front ends of the left longitudinal beam 1 and the right longitudinal beam 2; then the two longitudinal beams are placed in parallel, and the end cross beams and the cross beam assembly are connected to the longitudinal beams to form an aluminum alloy frame with a "ladder-type" structure. All connection nodes of the frame are connected with bolts.

[0028] One of the reinforcing beam assembly connection ends is inserted into the front end of the left longitudinal beam 1, and the upper connection beam 7 is connected to the upper flange of the left longitudinal beam 1 by bolts, and the lower connection beam 8 is connected to the lower flange of the left longitudinal beam 1 by bolts; the other reinforcing beam assembly connection end is inserted into the front end of the right longitudinal beam 2, and the upper connection beam 7 is connected to the upper flange of the right longitudinal beam 2 by bolts, and the lower connection beam 8 is connected to the lower flange of the right longitudinal beam 2 by bolts. The plug-in structure is used in combination with bolt connection, which has high connection strength and good connection reliability, and there is no attenuation problem of the welded joint, which meets the connection requirements of the frame longitudinal beams under complex working conditions.

[0029] The connection between the reinforcement beam assembly and the left longitudinal beam 1 is provided with a beam outer reinforcement plate 5, one end of which is fixed to the left longitudinal beam 1 by bolts, and the other end is fixed to the longitudinal beam reinforcement plate 6 of the left longitudinal beam 1 by bolts; the connection between the reinforcement beam assembly and the right longitudinal beam 2 is provided with a beam outer reinforcement plate 5, one end of which is fixed to the right longitudinal beam 2 by bolts, and the other end is fixed to the longitudinal beam reinforcement plate 6 of the right longitudinal beam 2 by bolts. The provision of the beam outer reinforcement plate 5 not only plays a role in the lateral connection between the reinforcement beam assembly and the longitudinal beam, but also makes up for the loss of the overall structural strength of the frame after the longitudinal beam is cut off.

[0030] The two end cross beams 3 are located at the two ends of the longitudinal beam, and the two ends of the end cross beam 3 are respectively plugged into the corresponding longitudinal beam and fixed by bolts. A plurality of cross beam assemblies 4 are arranged on the longitudinal beam between the two end cross beams 3. Through the arrangement of the end cross beams and the cross beam assembly, the torsional rigidity of the entire frame is effectively improved.

[0031] The crossbeam assembly 4 includes a crossbeam 10 , and two ends of the crossbeam 10 are respectively connected with connecting members 11 by bolts. The connecting members 11 at the two ends of the crossbeam assembly 4 are installed on the longitudinal beam and fixed by bolts.

Claims

1. A combined longitudinal beam structure aluminum alloy frame, characterized in that: include A right longitudinal beam and a left longitudinal beam, wherein the right longitudinal beam and the left longitudinal beam are arranged in parallel, and the front ends of the right longitudinal beam and the left longitudinal beam are respectively connected to a reinforcing beam assembly to form a longitudinal beam, and the longitudinal beams are connected by an end cross beam and a cross beam assembly; A reinforcing beam assembly comprises an upper connecting beam and a lower connecting beam, wherein the upper connecting beam and the lower connecting beam are arranged one above the other and are connected and fixed by a reinforcing bracket, and the upper connecting beam and the lower connecting beam are simultaneously installed on a vertically arranged longitudinal beam reinforcement plate.

2. The combined longitudinal beam structure aluminum alloy frame according to claim 1, characterized in that: The connecting end of one of the reinforcing beam assemblies is inserted into the front end of the left longitudinal beam, and the upper connecting beam is connected to the upper flange of the left longitudinal beam by bolts, and the lower connecting beam is connected to the lower flange of the left longitudinal beam by bolts; the connecting end of the other reinforcing beam is inserted into the front end of the right longitudinal beam, and the upper connecting beam is connected to the upper flange of the right longitudinal beam by bolts, and the lower connecting beam is connected to the lower flange of the right longitudinal beam by bolts.

3. The combined longitudinal beam structure aluminum alloy frame according to claim 1, characterized in that: An outer beam reinforcement plate is provided at the connection between the reinforcing beam assembly and the left longitudinal beam, one end of the outer beam reinforcement plate is fixed to the left longitudinal beam by bolts, and the other end is fixed to the longitudinal beam reinforcement plate of the left longitudinal beam by bolts; an outer beam reinforcement plate is provided at the connection between the reinforcing beam and the right longitudinal beam, one end of the outer beam reinforcement plate is fixed to the right longitudinal beam by bolts, and the other end is fixed to the longitudinal beam reinforcement plate of the right longitudinal beam by bolts.

4. The combined longitudinal beam structure aluminum alloy frame according to claim 1, characterized in that: The two end cross beams are located at the two ends of the longitudinal beam, and the two ends of the end cross beam are respectively plugged into the corresponding longitudinal beam and fixed by bolts.

5. The combined longitudinal beam structure aluminum alloy frame according to claim 1, characterized in that: A plurality of the cross beam assemblies are arranged on the longitudinal beams between the two end cross beams.

6. The combined longitudinal beam structure aluminum alloy frame according to claim 5, characterized in that: The crossbeam assembly comprises a crossbeam, and both ends of the crossbeam are respectively connected with connecting pieces by bolts. The connecting pieces at both ends of the crossbeam assembly are installed on the longitudinal beam and fixed by bolts.

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