Connecting structure for aluminum alloy top-mounted top frame of commercial vehicle

Abstract

According to the aluminum alloy top-mounted top frame connecting structure for the commercial vehicle, the periphery of a top frame is defined by frame beams, and a plurality of top arc cross beams are arranged in the middle of the frame beams; three-way inserting rods are arranged at the four corners of the top frame, and extending parts of the three-way inserting rods are inserted into inner cavities of the frame beams to be fixed. The aluminum profile light-weight structural design is adopted, the weight reduction effect is greatly achieved, the overall structure is firm, the connecting positions of the frame beams are stable and well protected, and the frame beams are reliably connected with the side plates on the periphery; the assembly is convenient, the production efficiency is improved, and batch production is adapted; and welding process manufacturing can be avoided, and the advantages of small deformation, high strength and the like are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a commercial vehicle aluminum alloy upper mounting top frame connection structure. Background Art

[0002] Existing vans are mostly made of steel, which are heavy and energy-intensive, making it difficult to adapt to increasingly stringent emission regulations. Replacing steel with aluminum has become an important lightweight method for flatbed trucks under the new energy trend. Existing aluminum alloy cargo compartments are mostly welded or riveted structures, which are not conducive to rapid assembly and single component maintenance and replacement; in addition, the existing aluminum alloy compartments have poor connection strength and overall stability, and it is difficult to ensure safety and reliability during the service life, which is in urgent need of improvement.

[0003] The roof frame is the roof part of the entire car body. After the roof frame is covered with skin, it is installed on the top of the car body to shield the car body space and is tightly connected to the surrounding side panels. The difficulty in designing the roof frame lies in: how to ensure that the roof frame has a certain rigidity and impact resistance while being lightweight, so as to avoid deformation and damage to the top of the car body in bad weather; in addition, a firm and stable connection must be achieved between the roof frame and the front, rear, left and right side panels to achieve the overall structural stability of the entire van-type car body. The above are all design problems that must be overcome on the road to lightweighting of aluminum alloy van trucks. Summary of the invention

[0004] The purpose of the utility model is to provide a commercial vehicle aluminum alloy upper frame connection structure, which adopts an aluminum profile lightweight structure design, has a significant weight reduction effect, a solid overall structure, a stable and well protected frame beam connection, and a reliable connection with the surrounding side panels; it is easy to assemble, improves production efficiency, and is suitable for mass production; it can avoid the use of welding technology in manufacturing, and has the advantages of small deformation and high strength.

[0005] In order to achieve the above object, the technical solution of the utility model is as follows:

[0006] The top frame is surrounded by frame beams on all sides, and a number of top arc beams are arranged in the middle of the frame beams; three-way plug rods are arranged at the four corners of the top frame, and the transverse extensions of the three-way plug rods are inserted into the inner cavity of the frame beams for fixing.

[0007] The horizontal part of the three-way plug rod is plugged into the inner cavity of the frame beam to make the connection of the frame beam more firm. The end of the top arc beam is overlapped on the upper end surface of the frame beam and riveted and fixed.

[0008] Corner edging is arranged at the outer edges of the four corners of the top frame, and the sides of the corner edging are anchored to the three-way plug rod and the frame beam through fasteners; an edging pad is arranged at the corner connection of the frame beam, and the edging pad is fixed to the upper end surface of the frame beam through fasteners.

[0009] Corner edging can effectively protect the frame beam connection and provide a more stable connection rigidity; the edging pad is riveted to the upper end surface of the frame beam to enhance the connection strength of the connection.

[0010] A convex edge is arranged at the lower part of the profile of the frame beam to overlap the side plate and is anchored with a threaded fastener. The side plate of the carriage is placed in the middle of the two convex edges and overlapped, and rivets are used to achieve a firm connection between the top frame and the side plate of the carriage.

[0011] Advantages of utility models

[0012] 1. The top frame of the car body of the utility model is made of extruded aluminum profiles. Extruded aluminum profiles have the advantages of high structural strength and high lightness. Compared with the steel truck chassis, the rigidity and strength are not greatly reduced, and the energy-saving and emission reduction effects are obvious.

[0013] 2. The frame beam profile of the utility model is connected by a three-way plug-in fixation, which increases the connection strength compared to ordinary welding and avoids the loss of material mechanical properties caused by welding; it better solves the deformation problem of aluminum alloy components caused by welding manufacturing and improves the connection strength and the stability of the overall structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall elevation structure of the utility model; (upper side 45°)

[0015] Figure 2 This is a schematic diagram of the overall elevation structure of the utility model; (45° from the lower side)

[0016] Figure 3 This is a schematic diagram of the decomposed structure of the frame beam corner;

[0017] Figure 4 It is a schematic diagram of the connection position between the frame beam section and the three-way plug rod and the edge pad;

[0018] The serial numbers and component names in the figure are: 1-frame beam; 11-three-way plug rod; 12-corner edging; 13-edging pad; 2-skin; 3-top arc beam. DETAILED DESCRIPTION

[0019] A commercial vehicle aluminum alloy upper frame connection structure, the top frame is surrounded by frame beams 1, a plurality of top arc beams 3 are arranged in the middle of the frame beams 1; three-way plug rods 12 are arranged at the four corners of the top frame, and the transverse extension of the three-way plug rod 12 is inserted into the inner cavity of the frame beam 1 for fixing.

[0020] Corner edging 12 is arranged at the outer edges of the four corners of the top frame, and the sides of the corner edging 12 are anchored to the three-way plug rod 12 and the frame beam 1 through fasteners; an edging pad 13 is arranged at the corner connection of the frame beam 1, and the edging pad 13 is fixed to the upper end surface of the frame beam 1 through fasteners.

[0021] A convex edge is arranged at the lower part of the profile of the frame beam 1 to overlap the side plate and is anchored with threaded fasteners.

Claims

1. A commercial vehicle aluminum alloy upper frame connection structure, characterized in that: The top frame is surrounded by frame beams (1) on all sides, and a plurality of top arc cross beams (3) are arranged in the middle of the frame beams (1); three-way plug rods (11) are arranged at the four corners of the top frame, and the transversely extending portions of the three-way plug rods (11) are inserted into the inner cavity of the frame beams (1) for fixing.

2. The commercial vehicle aluminum alloy upper frame connection structure according to claim 1 is characterized in that: Corner edgings (12) are arranged at the outer edges of the four corners of the top frame, and the sides of the corner edgings (12) are anchored to the three-way plug rod (11) and the frame beam (1) through fasteners; and edging pads (13) are arranged at the corner connections of the frame beam (1), and the edging pads (13) are fixed to the upper end surface of the frame beam (1) through fasteners.

3. The commercial vehicle aluminum alloy upper frame connection structure according to claim 1 is characterized in that: A convex edge is provided at the lower part of the profile of the frame beam (1) to overlap the side plate and to be anchored with a threaded fastener.

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