Steel-aluminum composite cab framework structure

Abstract

The application discloses a steel-aluminum composite cab framework structure, which comprises a fixedly connected anti-collision frame and a rear aluminum alloy frame, the anti-collision frame comprises double-A-column anti-collision beams, a front anti-collision beam, a column support beam and a top beam, the double-A-column anti-collision beams comprise symmetrically arranged right and left A-column anti-collision beams, the right and left A-column anti-collision beams are in arc-shaped structures, the column support beams are connected to the inner sides of the right and left A-column anti-collision beams, the top beam is connected to the top portions of the right and left A-column anti-collision beams at two ends, respectively, and the front anti-collision beam is connected to the front portions of the right and left A-column anti-collision beams at two ends, respectively, the lightweight aluminum alloy structural framework material is used as a main body, a carbon steel anti-collision framework is connected in a composite mode at a key collision surface, and compared with a traditional cab framework which is welded by using single carbon steel or aluminum alloy material, the steel-aluminum composite cab framework structure has the advantages of collision capacity and light weight.

Description

Technical Field

[0001] This invention relates to a steel-aluminum composite cab frame structure, belonging to the field of engineering vehicle technology. Background Technology

[0002] Traditional engineering vehicle cabs mostly use carbon steel as a welded frame, which has advantages such as high strength and good collision resistance, but also disadvantages such as large cab weight and high cost of manufacturing molds. With the rapid development of aluminum alloy forming and welding technology, aluminum alloy bodies and cabs are widely used in passenger cars. However, in the field of engineering vehicles, due to the vehicle's heavy weight and large collision energy, the use of an all-aluminum alloy welded frame still has problems such as large deformation of the front anti-collision beam and easy breakage of the double A-pillars during collision impact. Summary of the Invention

[0003] To address the shortcomings of existing technologies, the present invention aims to provide a steel-aluminum composite cab frame structure, which solves the problem that cab frames in existing technologies are prone to deformation and breakage during collisions and impacts.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A steel-aluminum composite cab frame structure includes a fixedly connected anti-collision frame and a rear aluminum alloy frame. The anti-collision frame includes double A-pillar anti-collision beams, a front anti-collision beam, column support beams, and a top beam.

[0006] The dual A-pillar anti-collision beams include a symmetrically arranged right A-pillar anti-collision beam and a left A-pillar anti-collision beam. The right A-pillar anti-collision beam and the left A-pillar anti-collision beam are arc-shaped structures. The inner sides of the right A-pillar anti-collision beam and the left A-pillar anti-collision beam are connected to column support beams. The two ends of the top beam are connected to the top of the right A-pillar anti-collision beam and the top of the left A-pillar anti-collision beam, respectively. The two ends of the front anti-collision beam are connected to the front of the right A-pillar anti-collision beam and the front of the left A-pillar anti-collision beam, respectively.

[0007] Furthermore, the aforementioned A-pillar anti-collision beam also includes a connecting plate, a column support plate, an upper support plate for the front anti-collision beam, a lower support plate for the front anti-collision beam, a front connecting plate for the base plate, and a rear connecting L-shaped plate for the base plate;

[0008] The upper and lower ends of the right A-pillar anti-collision beam and the left A-pillar anti-collision beam are connected with connecting plates. The inner sides of the right A-pillar anti-collision beam and the left A-pillar anti-collision beam are connected from top to bottom with column support plate, front anti-collision beam upper support plate, front anti-collision beam lower support plate, bottom plate front connecting plate, and bottom plate rear connecting L-shaped plate.

[0009] Furthermore, the aforementioned front bumper beam includes an upper front bumper beam, a lower front bumper beam, a curved plate, and a bottom connecting plate;

[0010] The two ends of the upper front bumper beam are connected to the upper support plate of the front bumper beam on the inner side of the right A-pillar bumper beam and the left A-pillar bumper beam, respectively. The two ends of the lower front bumper beam are connected to the lower support plate of the front bumper beam on the inner side of the right A-pillar bumper beam and the left A-pillar bumper beam, respectively. The curved plate and the bottom connecting plate are fixedly connected to the lower front bumper beam.

[0011] Furthermore, the aforementioned column support beam includes a right column, a support plate, and a left column.

[0012] The upper and lower ends of the right column are connected to the inner side of the right A-pillar anti-collision beam, and the upper and lower ends of the left column are connected to the left A-pillar anti-collision beam. Support plates are connected to the inner side of both the right and left columns.

[0013] Furthermore, the aforementioned top beam includes a top beam and a connecting curved plate.

[0014] The top beam is connected to the column support plate on the inner side of the right A-pillar anti-collision beam and the left A-pillar anti-collision beam respectively, and the connecting bending plate is connected to the top beam.

[0015] Furthermore, the aforementioned rear aluminum alloy frame includes a right connecting beam, a middle connecting beam, a left connecting beam, a lower left connecting beam, a lower left crossbeam, a left front connecting beam, a middle lower connecting beam, a right front connecting beam, a lower right crossbeam, a lower right connecting beam, and a frame.

[0016] The frame is a welded aluminum alloy frame. One end of each of the following connecting beams is fixedly connected to the frame: right connecting beam, middle connecting beam, left connecting beam, lower left connecting beam, lower left crossbeam, front left connecting beam, lower middle connecting beam, front right connecting beam, lower right crossbeam, and lower right connecting beam.

[0017] The other end of the right connecting beam is connected to the connecting plate on the upper surface of the right A-pillar anti-collision beam; the other end of the left connecting beam is connected to the connecting plate on the upper surface of the left A-pillar anti-collision beam; the other end of the lower left connecting beam is connected to the connecting plate on the lower surface of the left A-pillar anti-collision beam; the other end of the lower right connecting beam is connected to the connecting plate on the lower surface of the right A-pillar anti-collision beam; the other end of the middle connecting beam is connected to the connecting curved plate; the other end of the lower right crossbeam is connected to the front connecting plate and the rear connecting L-shaped plate on the bottom plate of the right A-pillar anti-collision beam; the lower left crossbeam is connected to the front connecting plate and the rear connecting L-shaped plate on the bottom plate of the left A-pillar anti-collision beam; the other end of the left front connecting beam and the right front connecting beam is connected to the bottom connecting plate; and the other end of the lower middle connecting beam is connected to the curved plate.

[0018] Furthermore, the aforementioned double A-pillar anti-collision beams are made of high-strength carbon steel profiles.

[0019] Furthermore, both the upper and lower front bumper beams are made of small-grid reinforced aluminum alloy profiles, while the bending plates and bottom connecting plates are made of high-strength carbon steel profiles.

[0020] Furthermore, the aforementioned right column, support plate, and left column are made of high-strength carbon steel profiles.

[0021] Furthermore, the aforementioned top beam is made of aluminum alloy profile with a rectangular cross-section, and the connecting bend plate is made of high-strength carbon steel profile.

[0022] The beneficial effects achieved by this invention are as follows:

[0023] 1. The front anti-collision frame structure is made of high-strength steel A-pillar anti-collision beams and column support beams welded together on both sides, so that the left and right sides of the front of the cab form a side "A" type stable frame protection structure, which improves the cab's resistance to deformation in frontal and side collisions.

[0024] 2. The front bumper beam uses a small-grid reinforced aluminum alloy profile, which improves rigidity and resistance to deformation compared to traditional rectangular tube profiles;

[0025] 3. The double A-pillar anti-collision beams adopt a high-strength carbon steel profile structure to enhance the strength of the frontal collision structure; the upright support beam adopts a high-strength carbon steel profile structure to improve the cab's resistance to deformation during side collisions and maintain the stability of the frame; the top beam adopts an aluminum alloy profile to share the lateral force borne by the double A-pillar anti-collision beams during a collision; the rear aluminum alloy frame is a welded aluminum alloy profile frame, which is bolted to the front anti-collision beam, double A-pillar anti-collision beams, upright support beams, and top beam. It uses lightweight aluminum alloy structural frame material as the main body, and composite carbon steel anti-collision frame is connected at key collision surfaces. Compared with the traditional cab frame that uses a single carbon steel or aluminum alloy material for welding, it takes into account both collision capability and lightweight. Attached Figure Description

[0026] Figure 1 This invention relates to a steel-aluminum composite cab frame structure;

[0027] Figure 2 This invention relates to a steel-aluminum composite front anti-collision structure;

[0028] Figure 3 This is a diagram showing the connection between the front anti-collision frame and the rear aluminum alloy frame of this invention;

[0029] Figure 4 This is a schematic diagram of the internal cavity structure of the front anti-collision beam of the present invention;

[0030] Figure 5 This is a cross-sectional view of the front anti-collision beam of the present invention.

[0031] The meanings of the labels in the attached diagram are as follows: 1-Double A-pillar anti-collision beam; 2-Front anti-collision beam; 3-Column support beam; 4-Top beam; 5-Rear aluminum alloy frame; 11-Right A-pillar anti-collision beam; 12-Connecting plate; 13-Column support plate; 14-Upper support plate of front anti-collision beam; 15-Lower support plate of front anti-collision beam; 16-Front connecting plate of base plate; 17-L-shaped connecting plate of rear base plate; 18-Left A-pillar anti-collision beam; 21-Front anti-collision beam; 22-Lower front anti-collision beam. 23-Bent plate; 24-Bottom connecting plate; 31-Right column; 32-Support plate; 33-Left column; 41-Top beam; 42-Connecting bent plate; 50-Lower right connecting beam; 51-Right connecting beam; 52-Middle connecting beam; 53-Left connecting beam; 54-Lower left connecting beam; 55-Lower left crossbeam; 56-Left front connecting beam; 57-Lower middle connecting beam; 58-Right front connecting beam; 59-Lower right crossbeam; 511-Frame. Detailed Implementation

[0032] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments and specific features in the embodiments are detailed descriptions of the technical solution of the present application, rather than limitations thereof. In the absence of conflict, the embodiments and technical features in the embodiments can be combined with each other.

[0033] This embodiment discloses a steel-aluminum composite cab frame structure, such as Figure 1 As shown, it includes double A-pillar anti-collision beams 1, front anti-collision beam 2, column support beam 3, top beam 4, and rear aluminum alloy frame 5.

[0034] Figure 2 As shown, the double A-pillar anti-collision beam 1 includes a right A-pillar anti-collision beam 11, a connecting plate 12, a column support plate 13, a front anti-collision beam upper support plate 14, a front anti-collision beam lower support plate 15, a base plate front connecting plate 16, a base plate rear connecting L-shaped plate 17, and a left A-pillar anti-collision beam 18. There are four connecting plates 12, which are welded to the four end faces of the right A-pillar anti-collision beam 11 and the left A-pillar anti-collision beam 18 respectively. There are two column support plates 13, which are welded to the sides of the right A-pillar anti-collision beam 11 and the left A-pillar anti-collision beam 18 respectively. Next, there are two upper support plates 14 on the front bumper beam, which are welded to the sides of the right A-pillar bumper beam 11 and the left A-pillar bumper beam 18 respectively. There are two lower support plates 15 on the front bumper beam, which are welded to the sides of the right A-pillar bumper beam 11 and the left A-pillar bumper beam 18 respectively. There are two front connecting plates 16 on the bottom plate, which are welded to the sides of the right A-pillar bumper beam 11 and the left A-pillar bumper beam 18 respectively. There are two rear connecting L-shaped plates 17 on the bottom plate, which are bolted to the sides of the right A-pillar bumper beam 11 and the left A-pillar bumper beam 18 respectively.

[0035] The front bumper beam 2 includes an upper front bumper beam 21, a lower front bumper beam 22, a curved plate 23, and a bottom connecting plate 24. The two ends of the upper front bumper beam 21 are bolted to the upper support plates 14 of the two front bumper beams, respectively. The two ends of the lower front bumper beam 22 are bolted to the lower support plates 15 of the two front bumper beams, respectively. There are four curved plates 23, which are divided into two groups of two and are bolted to the lower front bumper beam 22, respectively. There are four bottom connecting plates 24, which are divided into two groups of two and are welded to the lower front bumper beam 22, respectively.

[0036] The column support beam 3 includes a right column 31, a support plate 32, and a left column 33. The upper and lower ends of the right column 31 are welded to the right A-column anti-collision beam 11, and the upper and lower ends of the left column 33 are welded to the left A-column anti-collision beam 18. There are two support plates 32, which are welded to the right column 31 and the left column 33, respectively.

[0037] The top beam 4 includes a top beam 41 and a connecting bending plate 42. The two ends of the top beam 41 are bolted to two column support plates 13 respectively. There are 6 connecting bending plates 42, 2 in a group, for a total of 3 groups, which are bolted to the top beam 41 respectively.

[0038] Figure 3 As shown, the rear aluminum alloy frame 5 includes a right connecting beam 51, a middle connecting beam 52, a left connecting beam 53, a lower left connecting beam 54, a lower left crossbeam 55, a front left connecting beam 56, a lower middle connecting beam 57, a front right connecting beam 58, a lower right crossbeam 59, a lower right connecting beam 50, and a frame 511. The end faces of the right connecting beam 51, left connecting beam 53, lower left connecting beam 54, and lower right connecting beam 50 are respectively bolted to four connecting plates 12. The middle connecting beam 52 has three beams, which are respectively bolted to three sets of connecting bent plates 42. The lower left crossbeam 55 and the lower right crossbeam 59 are respectively bolted to two connecting plates 12. The front connecting plate 16 of the base plate is bolted to the rear connecting L-shaped plate 17 of the two base plates. The left front connecting beam 56 and the right front connecting beam 58 are bolted to the two sets of bottom connecting plates 24 respectively. There are two middle and lower connecting beams 57, which are bolted to the two sets of curved plates 23 respectively. The frame 511 is the rear aluminum alloy welded frame of the cab, which is welded to the right connecting beam 51, the middle connecting beam 52, the left connecting beam 53, the left lower connecting beam 54, the left lower crossbeam 55, the left front connecting beam 56, the middle and lower connecting beam 57, the right front connecting beam 58, the right lower crossbeam 59, and the right lower connecting beam 50 respectively.

[0039] Combination Figure 4 , Figure 5 Both the upper front bumper beam 21 and the lower front bumper beam 22 are made of small-grid reinforced aluminum alloy profiles to improve the deformation resistance of the bumper beams during a frontal collision.

[0040] The right A-pillar anti-collision beam 11, left A-pillar anti-collision beam 18, right pillar 31, and left pillar 33 all adopt Q55B high-strength carbon steel profile structure, so that the left and right sides of the front end of the cab form a side "A" shaped stable frame, maintain the stability of the frame, enhance the strength and rigidity of the frontal collision structure, and improve the cab's resistance to deformation during side collisions.

[0041] The top beam 41 is made of aluminum alloy profile with a rectangular cross-section. On one hand, it connects with the right A-pillar anti-collision beam 11 and the left A-pillar anti-collision beam 18 to maintain the stability of the anti-collision frame, and on the other hand, it shares the force transmitted by the double A-pillar anti-collision beams during a collision.

[0042] The rear aluminum alloy frame 5 is an overall welded aluminum alloy profile frame, which has the advantages of large space and light weight.

[0043] The connecting plate 12, column support plate 13, upper support plate 14 of the front anti-collision beam, lower support plate 15 of the front anti-collision beam, front connecting plate 16 of the bottom plate, rear connecting L-shaped plate 17 of the bottom plate, bending plate 23, bottom connecting plate 24, support plate 32, and connecting bending plate 42 are all made of high-strength steel with the same strength as the right A-pillar anti-collision beam 11 and the left A-pillar anti-collision beam 18, and the rest are made of aluminum alloy.

[0044] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A steel-aluminum composite cab frame structure, characterized in that, It includes a fixedly connected anti-collision frame and a rear aluminum alloy frame (5), the anti-collision frame including a double A-pillar anti-collision beam (1), a front anti-collision beam (2), a column support beam (3) and a top beam (4); The double A-pillar anti-collision beam (1) includes a right A-pillar anti-collision beam (11) and a left A-pillar anti-collision beam (18) arranged symmetrically. The right A-pillar anti-collision beam (11) and the left A-pillar anti-collision beam (18) are arc-shaped structures. The inner sides of the right A-pillar anti-collision beam (11) and the left A-pillar anti-collision beam (18) are connected to column support beams (3). The top beam (4) is connected to the top of the right A-pillar anti-collision beam (11) and the top of the left A-pillar anti-collision beam (18) at both ends respectively. The front anti-collision beam (2) is connected to the front of the right A-pillar anti-collision beam (11) and the front of the left A-pillar anti-collision beam (18) at both ends respectively. The double A-pillar anti-collision beam (1) also includes a connecting plate (12), a column support plate (13), an upper support plate (14) for the front anti-collision beam, a lower support plate (15) for the front anti-collision beam, a front connecting plate (16) for the bottom plate, and a rear connecting L-shaped plate (17) for the bottom plate. The upper and lower ends of the right A-pillar anti-collision beam (11) and the left A-pillar anti-collision beam (18) are connected with connecting plates (12). The inner sides of the right A-pillar anti-collision beam (11) and the left A-pillar anti-collision beam (18) are connected from top to bottom with a column support plate (13), a front anti-collision beam upper support plate (14), a front anti-collision beam lower support plate (15), a bottom plate front connecting plate (16), and a bottom plate rear connecting L-shaped plate (17). The double A-column anti-collision beam (1) is made of high-strength carbon steel profile; The front bumper beam (2) includes an upper front bumper beam (21), a lower front bumper beam (22), a curved plate (23), and a bottom connecting plate (24). The two ends of the upper front anti-collision beam (21) are respectively connected to the upper support plate (14) of the front anti-collision beam on the inner side of the right A-pillar anti-collision beam (11) and the left A-pillar anti-collision beam (18). The two ends of the lower front anti-collision beam (22) are respectively connected to the lower support plate (15) of the front anti-collision beam on the inner side of the right A-pillar anti-collision beam (11) and the left A-pillar anti-collision beam (18). The curved plate (23) and the bottom connecting plate (24) are respectively fixedly connected to the lower front anti-collision beam (22). The upper front anti-collision beam (21) and the lower front anti-collision beam (22) are both made of small grid reinforced aluminum alloy profiles, and the bending plate (23) and the bottom connecting plate (24) are made of high-strength carbon steel profiles; The top beam (4) includes the top beam body and the connecting bending plate (42); The top beam body is connected to the column support plate (13) on the inner side of the right A-pillar anti-collision beam (11) and the left A-pillar anti-collision beam (18), respectively, and the connecting bending plate (42) is connected to the top beam body; The top beam body is made of aluminum alloy profile with a rectangular cross-section, and the connecting bending plate (42) is made of high-strength carbon steel profile.

2. The steel-aluminum composite cab frame structure according to claim 1, characterized in that, The column support beam (3) includes a right column (31), a support plate (32), and a left column (33); The upper and lower ends of the right column (31) are respectively connected to the inner side of the right A-pillar anti-collision beam (11), and the upper and lower ends of the left column (33) are respectively connected to the left A-pillar anti-collision beam (18). The inner side of the right column (31) and the inner side of the left column (33) are both connected to the support plate (32).

3. The steel-aluminum composite cab frame structure according to claim 2, characterized in that, The rear aluminum alloy frame (5) includes a right connecting beam (51), a middle connecting beam (52), a left connecting beam (53), a lower left connecting beam (54), a lower left crossbeam (55), a left front connecting beam (56), a middle lower connecting beam (57), a right front connecting beam (58), a lower right crossbeam (59), a lower right connecting beam (50), and a frame (511). The frame (511) is an aluminum alloy welded frame, and one end of the right connecting beam (51), the middle connecting beam (52), the left connecting beam (53), the lower left connecting beam (54), the lower left crossbeam (55), the left front connecting beam (56), the middle lower connecting beam (57), the right front connecting beam (58), the lower right crossbeam (59), and the lower right connecting beam (50) are respectively fixedly connected to the frame (511); The other end of the right connecting beam (51) is connected to the connecting plate (12) on the upper surface of the right A-pillar anti-collision beam (11), the other end of the left connecting beam (53) is connected to the connecting plate (12) on the upper surface of the left A-pillar anti-collision beam (18), the other end of the lower left connecting beam (54) is connected to the connecting plate (12) on the lower surface of the left A-pillar anti-collision beam (18), the other end of the lower right connecting beam (50) is connected to the connecting plate (12) on the lower surface of the right A-pillar anti-collision beam (11), and the other end of the middle connecting beam (52) is connected to the connecting plate (12) on the lower surface of the right A-pillar anti-collision beam (11). The lower right crossbeam (59) is connected to the bending plate (42), and the other end of the lower right crossbeam (59) is connected to the front connecting plate (16) and the rear connecting L-shaped plate (17) on the bottom plate of the right A-pillar anti-collision beam (11). The lower left crossbeam (55) is connected to the front connecting plate (16) and the rear connecting L-shaped plate (17) on the bottom plate of the left A-pillar anti-collision beam (18). The other end of the left front connecting beam (56) and the right front connecting beam (58) is connected to the bottom connecting plate (24), and the other end of the middle lower connecting beam (57) is connected to the bending plate (23).

4. The steel-aluminum composite cab frame structure according to claim 2, characterized in that, The right column (31), support plate (32), and left column (33) are made of high-strength carbon steel profiles.

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