Rail plate type truck aluminum alloy bottom plate structure

Abstract

According to the breast board type truck aluminum alloy bottom plate structure, the appearance of a bottom plate is defined by frame beams, a plurality of longitudinal beams are arranged at the bottom of the bottom plate, a plurality of cross beams are in lap joint above the longitudinal beams, the two ends of the cross beams are fixedly connected with the inner sides of the frame beams, and longitudinal bottom plate profiles are laid on the cross beams. The bottom plate structure is obtained by connecting and fixing aluminum profiles and has the advantages of being light in weight, firm in structure, convenient and fast to assemble and install and the like. And meanwhile, the production efficiency of the aluminum alloy bottom plate structure can be improved, and the aluminum alloy bottom plate structure is suitable for batch production.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to an aluminum alloy compartment structure of a sideboard type truck. Background Art

[0002] Existing flatbed trucks are mostly made of steel, with heavy weight and high energy consumption, 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 trend of new energy. Existing aluminum alloy cargo compartment components are mostly integrally welded or riveted structures, which are not conducive to rapid assembly and single component maintenance and replacement, and the enclosure and floor are fixed structures that cannot adapt to the size requirements of different models. In addition, the existing aluminum alloy compartment railings have poor connection strength and overall stability, and safety and reliability are difficult to guarantee during the service life, which urgently needs to be improved.

[0003] The floor is installed at the bottom of the car body and is usually hinged to the sideboard. The front part is fixedly connected to the front enclosure and bears the entire weight of the cargo. It is an important part of the car body. How to ensure the load-bearing capacity of the floor while reducing weight, and how to achieve a firm and stable connection between the sideboard, hinge and floor are all design challenges that must be overcome on the road to lightweighting of sideboard trucks. Summary of the invention

[0004] The purpose of the utility model is to provide an aluminum alloy bottom plate structure for a sideboard type truck, which is connected and fixed by aluminum profiles and has the advantages of light weight, strong structure, and convenient assembly and installation. It is easy to assemble and is conducive to the interchangeability of parts. At the same time, it can also improve the production efficiency of the aluminum alloy bottom plate structure and adapt to mass production.

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

[0006] The invention discloses an aluminum alloy floor structure for a flatbed truck. The floor shape is formed by frame beams. A plurality of longitudinal beams are arranged at the bottom of the floor. A plurality of transverse beams are overlapped on the longitudinal beams. Both ends of the transverse beams are fixedly connected to the inner side of the frame beams. The longitudinal floor profile is laid on the transverse beams.

[0007] The longitudinal beam is located at the bottom of the entire floor, connected to the chassis of the car, and bears the weight of the entire floor above; the frame beam and the cross beam are located in the middle layer of the floor, and play a role in distribution, evenly distributing the weight of the upper cargo to the weight of the entire floor; the top floor profile and floor side profile are laid flat to form a loading plane. The floor profile is a profile structure with a cavity, and slots and dowels are set at both ends of the profile section, which can be fixed by riveting after docking.

[0008] The two sides of the bottom plate profile are connected to the bottom plate side profile, and the other side of the bottom plate side profile is connected to the frame beam. The bottom plate side profile is used to be installed on the outside of the bottom plate profile at the side, and its structure and the edge of the bottom plate profile can be installed in a variable position, that is, the overlap size of the bottom plate side profile and the bottom plate profile can be fine-tuned according to the specific value of the width of the vehicle model, so that no matter what vehicle model and size, it can be assembled by adjusting the number of profiles and the overlap size without changing the cross section of the aluminum profile, without matching the special vehicle model, and extruding aluminum profiles of different sizes separately, saving production costs.

[0009] The cross section of the frame beam profile is provided with two upper and lower overlapping edges inwardly, the upper end surface of the upper edge overlaps with the bottom plate edge profile; the upper end surface of the lower edge overlaps with the cross beam; and the lower end surface of the lower edge overlaps with the longitudinal beam.

[0010] In order to make the frame profile and other beams better and more convenient to be fixedly connected, the frame beam profile is overlapped with other beams by setting upper and lower edges, so that the entire base plate structure has better rigidity and higher connection strength.

[0011] A longitudinal and transverse connector is provided at the intersection of the longitudinal beam and the transverse beam, and a groove is provided on the side of the middle part of the transverse beam, and the groove matches and is inserted into the protrusion of the longitudinal and transverse connector. The bottom lower end surface of the longitudinal and transverse connector is attached to and bolted to the longitudinal beam. The longitudinal beam is groove-shaped, and a convex rib and an aluminum pad are provided on the back of the longitudinal beam connected to the longitudinal and transverse connector. The bolts pass through the longitudinal beam profile body and the pad for bolting, so that the connection strength is higher, the longitudinal beam profile is not easily pulled and torn, and the service life of the longitudinal beam is effectively improved.

[0012] Corner reinforcements are arranged outside the two corners at the front end of the bottom plate. The vertical and horizontal intersections of the frame beams are beveled at a 45-degree angle and riveted on the outside through the corner reinforcements to improve the connection strength of the two corners at the front end of the bottom plate.

[0013] Reinforced angle aluminum and reinforced arc plates are arranged on the inner sides of the two corners at the front end of the bottom plate, wherein the reinforced angle aluminum is fixed at the upper end surface of the lower edge of the longitudinal frame beam, and the two sides of the reinforced arc plates are fixed at the lower end surfaces of the lower edges of the longitudinal and transverse frame beams.

[0014] Since the frame beam at the rear of the car is an important load-bearing part of the entire car, by adding reinforced angle aluminum and reinforcing arc plates riveted at the frame beam connection nodes, the connection strength of the rear frame beam can be increased and the bearing capacity of the frame beam can be enhanced.

[0015] At the joint between the frame beam and the longitudinal beam at the rear of the bottom plate, a reinforced end beam is arranged on the upper end surface of the lower edge of the frame beam. The reinforced end beam improves the rigidity of the profile of the rear frame beam, making its groove structure less prone to collapse and deformation; on the other hand, the end of the reinforced end beam is connected to the end of the longitudinal beam below through bolts and gaskets, which also improves the connection strength between the longitudinal beam and the entire bottom plate structure, killing two birds with one stone.

[0016] Advantages of utility models

[0017] 1. All parts of the utility model are made of extruded aluminum profiles. The multi-cavity extruded profiles have the advantages of high structural strength and high lightness. Compared with steel truck side panels, the weight can be reduced by about 70% without a significant decrease in rigidity and strength, and the energy-saving and emission-reduction effects are obvious.

[0018] 2. The utility model adopts a modular design to form a sideboard-type truck floor structure, which is easy to assemble and is conducive to the interchangeability of parts. It can also improve production efficiency and adapt to mass production.

[0019] 3. The key nodes of the utility model adopt the overlapping riveting connection method, which effectively solves the deformation problem of aluminum alloy components caused by welding and improves the connection strength and the stability of the overall structure.

[0020] 4. The utility model adds a bottom plate side profile for transition between the bottom plate and the frame beam. Without changing the cross-sectional size of the aluminum profile, it can adapt to the use of carriages of different sizes. The profile has high versatility and saves production costs.

[0021] 5. Additional longitudinal and transverse connectors and pad bolt connection structures are designed at the joints of the longitudinal and transverse beams to ensure better connection strength at key node joints, thereby increasing the overall life of the guardrail structure with limited cost increase. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the bottom plate structure beam frame structure (upward oblique elevation perspective)

[0023] Figure 2 for Figure 1 The schematic diagram of the local enlarged structure at position Ⅰ in the middle;

[0024] Figure 3 This is a schematic diagram of the bottom plate structure beam frame structure (from the lower oblique elevation perspective)

[0025] Figure 4 for Figure 3 The schematic diagram of the local enlarged structure at the middle II;

[0026] Figure 5 This is a schematic diagram of the overall structural appearance of the base plate;

[0027] Figure 6 It is a schematic diagram of the cross-section structure of the frame beam profile;

[0028] Figure 7 It is a schematic diagram of the cross-section structure of the bottom plate profile;

[0029] Figure 8 It is a schematic diagram of the cross-section structure of the bottom plate edge profile;

[0030] Fig. 9 It is a schematic diagram of the connection structure of the frame beam profile, the bottom plate profile and the bottom plate edge profile;

[0031] The serial numbers and component names in the figure are: 1-frame beam; 11-reinforced angle aluminum; 12-reinforced arc plate; 2-longitudinal beam; 21-longitudinal and transverse connecting parts; 22-reinforced end beam; 3-cross beam; 4-short cross beam; 5-corner reinforcement; 6-bottom plate profile; 7-bottom plate edge profile. DETAILED DESCRIPTION Example 1

[0032] A flatbed truck aluminum alloy floor structure, the floor shape is formed by a frame beam 1, a plurality of longitudinal beams 2 are arranged at the bottom of the floor, a plurality of cross beams 3 are overlapped on the longitudinal beams 2, the two ends of the cross beams 3 are fixedly connected to the inner side of the frame beam 1, and the longitudinal floor profile (6) is laid on the cross beams 3.

[0033] The two sides of the bottom plate profile 6 are connected to the bottom plate side profile 7 , and the other side of the bottom plate side profile 7 is connected to the frame beam 1 .

[0034] The cross section of the frame beam 1 is provided with two upper and lower overlapping edges inwardly, the upper end surface of the upper edge overlaps the bottom plate edge profile 7; the upper end surface of the lower edge overlaps the cross beam 3; and the lower end surface of the lower edge overlaps the longitudinal beam 2.

[0035] A longitudinal and transverse connecting piece 21 is arranged at the intersection node of the longitudinal beam 2 and the transverse beam 3 , and a groove is arranged on the middle side of the transverse beam 3 , and the groove matches with the protruding part of the longitudinal and transverse connecting piece 21 and is embedded and plugged.

[0036] Corner reinforcements 5 are arranged outside the two corners at the front end of the bottom plate.

[0037] Reinforced angle aluminum 11 and reinforced arc plate 12 are arranged on the inner sides of the two corners at the front end of the bottom plate, wherein the reinforced angle aluminum 11 is fixed at the upper end surface of the lower edge of the longitudinal frame beam 1, and the two sides of the reinforced arc plate 12 are fixed at the lower end surface of the lower edge of the longitudinal and transverse frame beams 1.

[0038] At the overlap between the frame beam 1 and the longitudinal beam 2 at the rear of the bottom plate, a reinforcing end beam (22) is provided on the upper end surface of the lower edge of the frame beam 1.

Claims

1. An aluminum alloy floor structure for a sidewalk truck, characterized in that: The bottom plate is formed by enclosing a frame beam (1), a plurality of longitudinal beams (2) are arranged at the bottom of the bottom plate, a plurality of transverse beams (3) are overlapped on the longitudinal beams (2), both ends of the transverse beams (3) are fixedly connected to the inner side of the frame beams (1), and longitudinal bottom plate profiles (6) are laid on the transverse beams (3).

2. The aluminum alloy floor structure of a flatbed truck according to claim 1, characterized in that: The two sides of the bottom plate profile (6) are connected to the bottom plate side profile (7), and the other side of the bottom plate side profile (7) is connected to the frame beam (1).

3. The aluminum alloy floor structure of a flatbed truck according to claim 2 is characterized in that: The frame beam (1) has two upper and lower overlapping edges inwardly arranged on the profile cross section, wherein the upper end surface of the upper edge overlaps the bottom plate edge profile (7); the upper end surface of the lower edge overlaps the cross beam (3); and the lower end surface of the lower edge overlaps the longitudinal beam (2).

4. The aluminum alloy floor structure of a flatbed truck according to claim 1, characterized in that: A longitudinal and transverse connecting piece (21) is arranged at the intersection node of the longitudinal beam (2) and the transverse beam (3), and a groove is arranged on the side surface of the middle part of the transverse beam (3), and the groove matches and is embedded and plugged with the protruding part of the longitudinal and transverse connecting piece (21).

5. The aluminum alloy floor structure of a flatbed truck according to claim 1, characterized in that: Corner reinforcement pieces (5) are arranged on the outer sides of the two corners at the front end of the bottom plate.

6. The aluminum alloy floor structure of a flatbed truck according to claim 1, characterized in that: Reinforced angle aluminum (11) and reinforced arc plate (12) are arranged inside the two corners at the front end of the bottom plate, wherein the reinforced angle aluminum (11) is fixed to the upper end surface of the lower edge of the longitudinal frame beam (1), and two sides of the reinforced arc plate (12) are fixed to the lower end surfaces of the lower edges of the longitudinal and transverse frame beams (1).

7. The aluminum alloy floor structure of a flatbed truck according to claim 3 is characterized in that: At the overlap between the frame beam (1) and the longitudinal beam (2) at the rear of the bottom plate, a reinforced end beam (22) is provided on the upper end surface of the lower edge of the frame beam (1).

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