Split type cross beam aluminum alloy frame for heavy truck

Abstract

The utility model discloses a split type crossbeam aluminum alloy frame for heavy truck, hydrogen energy heavy truck manufacturing technical field, whole adopts aluminum alloy material quality to make, realizes to replace steel with aluminum, including main body frame module. This module contains two groups of parallel interval arrangement's longitudinal beam, and longitudinal beam side wall is equipped with weight reduction hole, and the front end has longitudinal beam front section reinforcing plate, and the lateral wall outside has the middle section outside reinforcing plate. Two groups of longitudinal beam from front to back have first to third intermediate crossbeam assembly in proper order, and first to fifth upper crossbeam assembly. Each crossbeam assembly, reinforcing plate all are connected with longitudinal beam with the way of screwing. Longitudinal beam, each crossbeam assembly, front section reinforcing plate, middle section outside reinforcing plate all are aluminum alloy material quality. Through above setting, realize frame whole weight reduction 32%, and each component adopts screw connection, and fatigue strength improves 40%.

Description

Technical Field

[0001] This utility model relates to the field of new energy vehicle technology, specifically to a split-type crossbeam aluminum alloy frame for heavy trucks. Background Technology

[0002] In the field of vehicle engineering technology, the design and optimization of the chassis frame structure of heavy-duty trucks, as important transportation equipment, has always been a research hotspot. In recent years, with the rapid development of the logistics industry, the requirements for the load-bearing capacity, reliability, and lightweighting of heavy-duty trucks have been continuously increasing. Hydrogen energy, as a clean and efficient energy source, is gradually gaining attention in the application of heavy-duty transport vehicles, which also poses new challenges and demands on the chassis frame structure of heavy-duty trucks. The industry is constantly exploring new materials and structural designs to improve the performance of heavy-duty trucks, and innovative design concepts such as split-beam structures are beginning to be applied to the design of heavy-duty truck chassis frames. Currently, heavy-duty truck frames mostly use steel materials, whose high density leads to a large vehicle curb weight and a significant increase in fuel consumption; at the same time, steel has poor corrosion resistance, requiring regular rust prevention treatment, resulting in high maintenance costs. In addition, the processing technology of steel frames is complex, with high forming energy consumption, and insufficient energy absorption during collisions, posing safety hazards. Therefore, there is an urgent need for a lightweight, highly reliable frame material and structure. The weight reduction of existing steel vehicle frames is generally less than 15%, while aluminum alloy vehicle frames have achieved a weight reduction of 30% in the passenger car sector, but their application in the heavy truck sector is still limited by structural strength design challenges. Utility Model Content

[0003] In view of this, this utility model discloses a split-type crossbeam aluminum alloy frame for heavy trucks, the specific solution of which is as follows:

[0004] A split-type crossbeam aluminum alloy chassis for heavy trucks includes a main chassis module. The main chassis module includes two sets of relatively parallel and spaced longitudinal beams, a first intermediate crossbeam assembly, a second intermediate crossbeam assembly, a first upper crossbeam assembly, a second upper crossbeam assembly, a third upper crossbeam assembly, a fourth upper crossbeam assembly, a fifth upper crossbeam assembly, and a third intermediate crossbeam assembly arranged sequentially from front to back between the two sets of longitudinal beams, as well as a front section reinforcing plate and a middle section outer reinforcing plate of the longitudinal beams arranged on the longitudinal beams.

[0005] Both sets of longitudinal beams are U-shaped channel structures, and several sets of weight-reducing holes are evenly arrayed on the side walls of the longitudinal beams.

[0006] The front section reinforcing plate of the longitudinal beam is disposed at the front end of the longitudinal beam and is located on the outer surface of the side wall of the longitudinal beam at the connection position between the first intermediate crossbeam assembly and the longitudinal beam. The middle section outer reinforcing plate of the longitudinal beam is disposed on the outer surface of the side wall of the longitudinal beam.

[0007] The first intermediate crossbeam assembly, the second intermediate crossbeam assembly, the third intermediate crossbeam assembly, the first upper crossbeam assembly, the second upper crossbeam assembly, the third upper crossbeam assembly, the front section reinforcing plate of the longitudinal beam, the outer side reinforcing plate of the middle section of the longitudinal beam, and the inner side reinforcing plate of the middle section of the longitudinal beam are all connected to the longitudinal beam by bolting.

[0008] The longitudinal beam, the first intermediate crossbeam assembly, the second intermediate crossbeam assembly, the third intermediate crossbeam assembly, the first upper crossbeam assembly, the second upper crossbeam assembly, the third upper crossbeam assembly, the front reinforcing plate of the longitudinal beam, and the outer reinforcing plate of the middle section of the longitudinal beam are all made of aluminum alloy.

[0009] As a supplement to the technical solution of this utility model, the front section reinforcing plate of the longitudinal beam includes an upper fixing plate, a lower fixing plate, and a connecting plate. The upper fixing plate and the lower fixing plate have the same structure and are both provided with weight-reducing through holes. The upper fixing plate and the lower fixing plate are connected by the connecting plate.

[0010] The first intermediate crossbeam assembly includes a first intermediate crossbeam, a lower connector for the first intermediate crossbeam, and an upper connector for the first intermediate crossbeam.

[0011] The first intermediate crossbeam is a U-shaped channel structure with its channel opening facing the rear. The surface of the first intermediate crossbeam is provided with a weight-reducing through hole. The upper end of the first intermediate crossbeam is connected to the longitudinal beam through the upper connector of the first intermediate crossbeam, and the lower end of the first intermediate crossbeam is connected to the longitudinal beam through the lower connector of the first intermediate crossbeam.

[0012] The first intermediate crossbeam upper connector and the first intermediate crossbeam lower connector have the same structure, are symmetrically arranged and are both located in the U-shaped groove of the longitudinal beam. They both include a first longitudinal beam connecting plate and a first intermediate crossbeam connecting plate. The first longitudinal beam connecting plate is a long straight plate structure. The first longitudinal beam connecting plate is connected to the side wall of the longitudinal beam and the upper / lower fixing plate of the front section reinforcing plate of the longitudinal beam by a set of bolts.

[0013] One end of the first intermediate crossbeam connecting plate is connected to the first longitudinal beam connecting plate, and the first intermediate crossbeam connecting plate is screwed to the upper top wall / lower bottom wall of the longitudinal beam. The other end of the first intermediate crossbeam connecting plate extends towards the end of the first intermediate crossbeam and is screwed to the end of the first intermediate crossbeam. Along the extension direction of the first intermediate crossbeam connecting plate towards the first intermediate crossbeam, the width of the first intermediate crossbeam connecting plate gradually narrows. The length of the first longitudinal beam connecting plate is greater than the width of the first intermediate crossbeam.

[0014] As a supplement to the technical solution of this utility model, the second intermediate crossbeam assembly includes a second intermediate crossbeam connector and a second intermediate crossbeam;

[0015] The second intermediate crossbeam is a U-shaped channel structure with its opening facing the rear. The second intermediate crossbeam connector is also a U-shaped channel structure. The side wall of the second intermediate crossbeam connector is screwed to the side wall of the longitudinal beam. The end of the second intermediate crossbeam is inserted into the channel of the second intermediate crossbeam connector. The top wall of the second intermediate crossbeam connector is screwed to the top wall of the second intermediate crossbeam, and the bottom wall of the second intermediate crossbeam connector is screwed to the bottom wall of the second intermediate crossbeam.

[0016] The side wall length of the second intermediate crossbeam connector is greater than the width of the second intermediate crossbeam. Along the extension direction of the upper top wall of the second intermediate crossbeam connector towards the second intermediate crossbeam, the width of the upper top wall of the second intermediate crossbeam connector gradually narrows.

[0017] As a supplement to the technical solution of this utility model, the first upper crossbeam assembly includes a first upper crossbeam and a first upper crossbeam connector; the first upper crossbeam connector is disposed on the outer surface of the side wall of the longitudinal beam, and it has an L-shaped structure, with the first side of the first upper crossbeam connector screwed to the side wall of the longitudinal beam; the first upper crossbeam has a plate-like structure, with an upward bending protrusion in its middle, the first upper crossbeam is disposed at the upper end of the longitudinal beam, and the end of the first upper crossbeam is screwed to the second side of the first upper crossbeam connector.

[0018] As a supplement to the technical solution of this utility model, the second upper crossbeam assembly includes a second upper crossbeam, a second upper crossbeam reinforcing block, and a second upper crossbeam connector; the second upper crossbeam is a square tube structure, the second upper crossbeam reinforcing block is a square block structure, the middle of which is provided with a weight-reducing through hole, the second upper crossbeam reinforcing block is disposed inside the square tube of the second upper crossbeam and located at the end position, and the outer surface of the second upper crossbeam reinforcing block is in contact with the inner surface of the second upper crossbeam;

[0019] The second upper crossbeam connector is disposed on the outer surface of the side wall of the longitudinal beam. It has an L-shaped structure. The first side of the second upper crossbeam connector is screwed to the side wall of the longitudinal beam. The upper end face of the second side of the second upper crossbeam connector is on the same plane as the upper end face of the upper top wall of the longitudinal beam. A connecting reinforcing rib is provided between the first side and the second side of the second upper crossbeam connector.

[0020] The second upper crossbeam is located at the upper end of the longitudinal beam. Bolts pass through the end side wall of the second upper crossbeam, the reinforcing block of the second upper crossbeam, and the second side of the connecting piece of the second upper crossbeam to fix the three together.

[0021] The third upper crossbeam assembly has the same structure as the second upper crossbeam assembly.

[0022] As a supplement to the technical solution of this utility model, the cross-section of the outer reinforcing plate of the middle section of the longitudinal beam is an L-shaped structure, with its first side screwed to the side wall of the longitudinal beam, and the plane of the upper end face of the second side being located on the same plane as the plane of the upper end face of the upper top wall of the longitudinal beam.

[0023] The fourth upper crossbeam assembly includes a fourth upper crossbeam and a fourth upper crossbeam reinforcing block. The fourth upper crossbeam is a square tube structure, and the fourth upper crossbeam reinforcing block is a square block structure with a weight-reducing through hole in the middle. The fourth upper crossbeam reinforcing block is located inside the square tube of the fourth upper crossbeam and at the end position. The outer surface of the fourth upper crossbeam reinforcing block is in contact with the inner surface of the fourth upper crossbeam. The fourth upper crossbeam is located at the upper end of the longitudinal beam. Bolts pass through the end sidewall of the fourth upper crossbeam, the fourth upper crossbeam reinforcing block, and the second side of the outer reinforcing plate in the middle section of the longitudinal beam to fix the three together.

[0024] The fifth upper crossbeam assembly includes a fifth upper crossbeam, which is a plate-like structure with an upwardly curved protrusion in its middle. The fifth upper crossbeam is located at the upper end of the longitudinal beam, and the end of the fifth upper crossbeam is bolted to the second side of the outer reinforcing plate in the middle section of the longitudinal beam.

[0025] As a supplement to the technical solution of this utility model, the third intermediate crossbeam assembly includes a third intermediate crossbeam, an upper connector for the third intermediate crossbeam, and a lower connector for the third intermediate crossbeam.

[0026] The longitudinal beam is provided with a cutting part at one end away from the first intermediate crossbeam assembly. The cutting part is formed by cutting the upper top wall of the longitudinal beam together from the middle of the side wall upward at the end position of the longitudinal beam.

[0027] The connecting member on the third intermediate crossbeam includes an upper top wall and a side wall. The upper top wall is located at the upper end of the side wall. The upper top wall includes an inclined part and a flat plate connecting part. The inclined part is an upwardly inclined plate structure with the same inclination angle as the cutting angle of the cutting part of the longitudinal beam. The flat plate connecting part is located at the front end of the inclined part and is parallel to the upper top wall of the longitudinal beam. The flat plate connecting part is located below the upper top wall of the longitudinal beam and is screwed to the upper top wall of the longitudinal beam.

[0028] The third intermediate crossbeam is a U-shaped channel structure. The side wall of the third intermediate crossbeam is provided with weight reduction holes. The upper top wall of the third intermediate crossbeam is inclined so that the upper top wall of the third intermediate crossbeam is parallel to the inclined part of the upper top wall of the connector. The upper top wall of the third intermediate crossbeam is screwed to the inclined part of the upper top wall of the connector.

[0029] The side wall of the lower connector of the third crossbeam is screwed to the side wall of the longitudinal beam. The lower connector of the third intermediate crossbeam has an L-shaped structure. The first side of the lower connector of the third intermediate crossbeam is screwed to the side wall of the longitudinal beam, and the second side of the lower connector of the third intermediate crossbeam is screwed to the bottom wall of the third intermediate crossbeam.

[0030] As a supplement to the technical solution of this utility model, a split-type crossbeam module is also included;

[0031] The split-type crossbeam module includes a lower crossbeam U-shaped beam, a lower crossbeam middle beam, connecting corner blocks, and a first gas cylinder clamp. The lower crossbeam U-shaped beam is a U-shaped structure made of aluminum alloy square tube through a bending process. Its opening side faces upward and includes the bottom edge of the lower crossbeam, the first edge of the lower crossbeam, and the second edge of the lower crossbeam. The lower parts of the first edge and the second edge of the lower crossbeam are connected to the bottom edge of the lower crossbeam, splicing the lower crossbeam U-shaped beam into a U-shaped structure. The first edge of the lower crossbeam is screwed to the outer surface of the side wall of a set of longitudinal beams, and the second edge of the lower crossbeam is screwed to the outer surface of the side wall of another set of longitudinal beams.

[0032] The middle beam of the lower crossbeam is horizontally arranged inside the opening of the U-shaped beam of the lower crossbeam. It is made of aluminum alloy. The connecting corner block is set at the end of the middle beam of the lower crossbeam. The connecting corner block is L-shaped. There is a reinforcing rib between the first side and the second side of the connecting corner block. The first side of the connecting corner block is screwed to the first side / second side of the lower crossbeam. The second side of the connecting corner block is horizontally screwed to the middle beam of the lower crossbeam.

[0033] The lower crossbeam U-shaped beam is equipped with a first gas cylinder clamp on the bottom edge of the lower crossbeam and on the middle beam of the lower crossbeam.

[0034] The split-type crossbeam module is provided in two groups. The first group of split-type crossbeam modules is located between the first upper crossbeam assembly and the second upper crossbeam assembly, and the second group of split-type crossbeam modules is located between the third upper crossbeam assembly and the fourth upper crossbeam assembly.

[0035] As a supplement to the technical solution of this utility model, it also includes a hydrogen energy integrated module and a guardrail;

[0036] The hydrogen energy integrated module includes a side cylinder bracket, a middle crossbeam of the cylinder bracket, and a second cylinder clamp. The upper part of the side cylinder bracket is screwed to the outer surface of the side wall of the longitudinal beam. The middle part of the side cylinder bracket is provided with a transversely arranged middle crossbeam, so that the side cylinder bracket and the middle crossbeam of the cylinder bracket form a T-shaped structure. The area between the upper end face of the middle crossbeam of the cylinder bracket and the side cylinder bracket, and the area between the lower end face of the middle crossbeam of the cylinder bracket and the side cylinder bracket are provided with second cylinder clamps. Each longitudinal beam is provided with two sets of hydrogen energy integrated modules. The first set of hydrogen energy integrated modules is set on the longitudinal beam between the first upper crossbeam assembly and the second upper crossbeam assembly. The second set of hydrogen energy integrated modules is set on the longitudinal beam between the third upper crossbeam assembly and the fourth upper crossbeam assembly. The guardrail is connected to the middle crossbeam of the cylinder bracket of the two sets of hydrogen energy integrated modules respectively.

[0037] The side cylinder bracket, the middle crossbeam of the cylinder bracket, and the guardrail of the hydrogen energy integrated module are all made of aluminum alloy.

[0038] As a supplement to the technical solution of this utility model, it also includes an inner reinforcing plate in the middle section of the longitudinal beam, which has a U-shaped groove structure and is disposed on the inner surface of the side wall of the longitudinal beam. The side wall of the inner reinforcing plate in the middle section of the longitudinal beam is screwed to the side wall of the longitudinal beam.

[0039] Beneficial Effects: This utility model discloses a split-type aluminum alloy frame for heavy-duty trucks, made of aluminum alloy, achieving "aluminum instead of steel." Compared with a steel frame of the same tonnage, it reduces weight by 32%, resulting in a 19% reduction in overall vehicle energy consumption. Furthermore, the self-passivating corrosion resistance of aluminum alloy ensures structural integrity in harsh environments. The various structures of the frame are connected by bolts, replacing traditional welding, increasing fatigue strength by 40%. The controllable deformation characteristics during collisions also significantly improve energy absorption efficiency. The bolted connections between the crossbeams and longitudinal beams reduce thermal deformation defects while increasing connection strength by 25%, facilitating assembly and disassembly and improving maintainability. The split-type crossbeam module, through the load-level design of the upper and lower crossbeam sub-assemblies, improves the uniformity of frame stress distribution by 30%, avoiding localized overload. For the hydrogen energy system, the hydrogen storage tank is positioned between the two sets of longitudinal beams, optimizing the vehicle's center of gravity to reduce the risk of tilting. The split-type crossbeam module and the integrated hydrogen energy module scientifically fix the hydrogen storage tank, and the addition of protective railings ensures shock absorption and leak prevention safety. Attached Figure Description

[0040] Figure 1 This is a three-dimensional structural diagram of the utility model.

[0041] Figure 2 This is a three-dimensional structural diagram of the utility model.

[0042] Figure 3 This is a schematic diagram of the main frame module structure of the utility model.

[0043] Figure 4 This is a schematic diagram of the front section reinforcing plate structure of the longitudinal beam of a utility model.

[0044] Figure 5 This is a schematic diagram of the first intermediate crossbeam assembly of the utility model.

[0045] Figure 6 This is a schematic diagram of the structure of the second intermediate crossbeam assembly, the first upper crossbeam assembly, and the second upper crossbeam assembly of the utility model.

[0046] Figure 7 This is a schematic diagram of the second intermediate crossbeam assembly of the utility model.

[0047] Figure 8 This is a schematic diagram of the fourth and fifth upper crossbeam assemblies of the utility model.

[0048] Figure 9 This is a schematic diagram of the third intermediate crossbeam assembly of the utility model.

[0049] Figure 10 This is a schematic diagram of the connecting component on the third intermediate crossbeam of the utility model.

[0050] Figure 11 This is a schematic diagram of the assembly structure of the longitudinal beam and the inner reinforcing plate in the middle section of the longitudinal beam.

[0051] Figure 12 This is a schematic diagram of a modular split beam structure for a utility model.

[0052] Figure 13 This is a schematic diagram of the structure of a utility model hydrogen energy integrated module.

[0053] In the diagram: 100. Main frame module; 101. Longitudinal beam; 102. Front section reinforcing plate of longitudinal beam; 103. Outer reinforcing plate of middle section of longitudinal beam; 104. First intermediate crossbeam assembly; 105. Second intermediate crossbeam assembly; 106. First upper crossbeam assembly; 107. Second upper crossbeam assembly; 108. Third upper crossbeam assembly; 109. Fourth upper crossbeam assembly; 110. Fifth upper crossbeam assembly; 111. Third intermediate crossbeam assembly; 112. Upper fixing plate; 113. Lower fixing plate; 114. Connecting plate; 115. First intermediate crossbeam; 116. Lower connector of first intermediate crossbeam; 117. Upper connector of first intermediate crossbeam; 118. First longitudinal beam connecting plate. 119. First intermediate crossbeam connecting plate; 120. Second intermediate crossbeam connector; 121. Second intermediate crossbeam; 122. First upper crossbeam; 123. First upper crossbeam connector; 124. Second upper crossbeam; 125. Second upper crossbeam reinforcing block; 126. Second upper crossbeam connector; 127. Fourth upper crossbeam; 128. Fourth upper crossbeam reinforcing block; 129. Fifth upper crossbeam; 130. Third intermediate crossbeam; 131. Third intermediate crossbeam upper connector; 132. Third intermediate crossbeam lower connector; 133. Connector top wall; 134. Connector side wall; 135. Inclined part; 136. Flat plate connecting part; 137. Inner reinforcing plate of the middle section of the longitudinal beam;

[0054] 200. Split-type crossbeam module; 201. Lower crossbeam U-shaped beam; 202. Lower crossbeam middle beam; 203. Connecting corner block; 204. First gas cylinder clamp; 205. Bottom edge of lower crossbeam; 206. First side of lower crossbeam; 207. Second side of lower crossbeam; 208. Gas cylinder pad block;

[0055] 300. Hydrogen energy integrated module; 301. Side gas cylinder bracket; 302. Gas cylinder bracket middle crossbeam; 303. Second gas cylinder clamp;

[0056] 400. Guardrail;

[0057] 500. Hydrogen storage cylinder. Detailed Implementation

[0058] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0059] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0060] like Figures 1 to 13 As shown, a split-type aluminum alloy frame for heavy-duty trucks is disclosed. The entire frame is made of aluminum alloy, achieving the technical requirement of replacing steel with aluminum while ensuring structural stability and lightweighting. It includes a main frame module 100, which comprises two sets of relatively parallel and spaced longitudinal beams 101, a first intermediate crossbeam assembly 104, a second intermediate crossbeam assembly 105, a first upper crossbeam assembly 106, a second upper crossbeam assembly 107, a third upper crossbeam assembly 108, a fourth upper crossbeam assembly 109, a fifth upper crossbeam assembly 110, a third intermediate crossbeam assembly 111, and a front section reinforcing plate 102 and a middle section outer reinforcing plate 103 mounted on the longitudinal beams 101.

[0061] The longitudinal beams 101 are all U-shaped channel structures, including two sets of parallel upper top walls and lower bottom walls, and side walls of the longitudinal beams 101 for connecting the upper top walls and lower bottom walls, thus forming an open U-shaped channel. The two sets of longitudinal beams 101 are arranged with their opening sides facing each other, that is, the opening of one set of longitudinal beams 101 faces the opening of the other set of longitudinal beams 101, and the side walls of the two sets of longitudinal beams 101 correspond to each other. Several sets of weight-reducing holes are evenly arrayed on the side walls of the longitudinal beams 101 to reduce the overall weight of the longitudinal beams 101.

[0062] The front section reinforcing plate 102 of the longitudinal beam is disposed at the front end of the longitudinal beam 101 and is located on the outer surface of the side wall of the longitudinal beam 101 at the connection position between the first intermediate crossbeam assembly 104 and the longitudinal beam 101. It is used to strengthen the structural strength of the front section of the longitudinal beam 101. The "outer surface" specifically refers to the end face of the side wall of the longitudinal beam 101 that is away from the first intermediate crossbeam assembly 104.

[0063] The outer reinforcing plate 103 of the middle section of the longitudinal beam is disposed on the outer surface of the side wall of the longitudinal beam 101 to strengthen the structural strength at the connection position between the longitudinal beam 101 and the vehicle body suspension.

[0064] The first intermediate crossbeam assembly 104, the second intermediate crossbeam assembly 105, the third intermediate crossbeam assembly 111, the first upper crossbeam assembly 106, the second upper crossbeam assembly 107, the third upper crossbeam assembly 108, the front section reinforcing plate 102 of the longitudinal beam, the outer side reinforcing plate 103 of the middle section of the longitudinal beam, and the inner side reinforcing plate 137 of the middle section of the longitudinal beam are all connected to the longitudinal beam 101 by bolting, which replaces the traditional steel frame connection by welding. This avoids the technical problems of reduced frame dimensional accuracy and stability caused by welding heat deformation, and at the same time has the technical effects of facilitating assembly and disassembly and improving maintainability.

[0065] The longitudinal beam 101, the first intermediate crossbeam assembly 104, the second intermediate crossbeam assembly 105, the third intermediate crossbeam assembly 111, the first upper crossbeam assembly 106, the second upper crossbeam assembly 107, the third upper crossbeam assembly 108, the front section reinforcing plate 102 of the longitudinal beam, and the outer side reinforcing plate 103 of the middle section of the longitudinal beam are all made of aluminum alloy.

[0066] Through the above design, the entire frame is made of aluminum alloy, which effectively reduces the overall weight of the frame. At the same time, all connecting parts are connected by screws. Since the coefficient of thermal expansion of aluminum alloy is greater than that of steel, if welding is used, it will inevitably produce large welding thermal deformation. The screw connection avoids the technical problem of welding thermal deformation and improves assembly efficiency. The front section reinforcing plate 102 and the outer side reinforcing plate 103 of the middle section of the longitudinal beam are set in the position of the frame with high stress, which further improves the overall structural strength of the aluminum alloy longitudinal beam 101.

[0067] As a preferred technical solution of this utility model, the front section reinforcing plate 102 of the longitudinal beam includes an upper fixing plate 112, a lower fixing plate 113, and a connecting plate 114. The upper fixing plate 112 and the lower fixing plate 113 have the same structure and are provided with a weight-reducing through hole in the middle along their length direction. The upper fixing plate 112 and the lower fixing plate 113 are connected by the connecting plate 114, so that the cross section of the front section reinforcing plate 102 of the longitudinal beam has an overall "U" shaped structure.

[0068] The first intermediate crossbeam assembly 104 includes a first intermediate crossbeam 115, a lower connector 116 for the first intermediate crossbeam, and an upper connector 117 for the first intermediate crossbeam;

[0069] The first intermediate crossbeam 115 is a U-shaped channel structure with its channel opening facing the rear. The surface of the first intermediate crossbeam 115 is provided with a weight-reducing through hole. The upper end of the first intermediate crossbeam 115 is connected to the longitudinal beam 101 through the upper connector 117 of the first intermediate crossbeam, and the lower end of the first intermediate crossbeam 115 is connected to the longitudinal beam 101 through the lower connector 116 of the first intermediate crossbeam.

[0070] The first intermediate crossbeam upper connector 117 and the first intermediate crossbeam lower connector 116 have the same structure, are symmetrically arranged, and are both located in the U-shaped groove of the longitudinal beam 101. Each includes a first longitudinal beam connecting plate 118 and a first intermediate crossbeam connecting plate 119. The first longitudinal beam connecting plate 118 is a long straight plate structure. The first longitudinal beam connecting plate 118 is connected to the side wall of the longitudinal beam 101 and the upper fixing plate 112 / lower fixing plate 113 of the front section reinforcing plate 102 of the longitudinal beam by a set of bolts. This can reduce the number of bolts used, reduce weight, ensure connection stability, and improve assembly efficiency.

[0071] Specifically, the upper connector 117 of the first intermediate crossbeam is bolted to the side wall of the longitudinal beam 101 and the upper fixing plate 112 of the front section reinforcing plate 102 of the longitudinal beam, and the lower connector 116 of the first intermediate crossbeam is bolted to the side wall of the longitudinal beam 101 and the lower fixing plate 113 of the front section reinforcing plate 102 of the longitudinal beam.

[0072] One end of the first intermediate crossbeam connecting plate 119 is connected to the first longitudinal beam connecting plate 118, and the first intermediate crossbeam connecting plate 119 is screwed to the upper top wall / lower bottom wall of the longitudinal beam 101. The other end of the first intermediate crossbeam connecting plate 119 extends toward the end of the first intermediate crossbeam 115 and is screwed to the end of the first intermediate crossbeam 115. Along the extension direction of the first intermediate crossbeam connecting plate 119 toward the first intermediate crossbeam 115, the width of the first intermediate crossbeam connecting plate 119 gradually narrows.

[0073] The length of the first longitudinal beam connecting plate 118 of the first intermediate crossbeam upper connector 117 or the first intermediate lower connector 116 is greater than the width of the first intermediate crossbeam 115, increasing the contact area between the first longitudinal beam connecting plate 118 and the longitudinal beam 101 and improving connection stability. The width of the end of the first intermediate crossbeam connecting plate 119 connected to the first longitudinal beam connecting plate 118 is the same as the length of the first longitudinal beam connecting plate 118, making the first intermediate crossbeam connecting plate 119 have an overall triangular structure, reducing the weight of the first intermediate crossbeam connecting plate 119.

[0074] The length of the first longitudinal beam connecting plate 118 specifically refers to its length along the longitudinal beam 101, and the width of the first intermediate crossbeam 115 specifically refers to its length along the longitudinal beam 101. The first intermediate crossbeam 115, as well as the upper connecting piece 117 and the lower connecting piece 116 of the first intermediate crossbeam, are all made of extruded aluminum alloy.

[0075] Through the structural design of the first intermediate crossbeam 115 and the upper and lower connecting parts 117 and 102 of the first intermediate crossbeam, the weight can be greatly reduced while the first intermediate crossbeam assembly 104 can be connected to the upper top wall, side wall and lower bottom wall of the longitudinal beam 101, thereby improving the structural stability of the connection between the first intermediate crossbeam assembly 104 and the longitudinal beam 101.

[0076] As a preferred embodiment of this utility model, the second intermediate crossbeam assembly 105 includes a second intermediate crossbeam connector 120 and a second intermediate crossbeam 121. The second intermediate crossbeam 121 has the same structure as the first intermediate crossbeam 115. The second intermediate crossbeam connector 120 has a U-shaped groove structure in cross section. The side wall of the second intermediate crossbeam connector 120 is screwed to the side wall of the longitudinal beam 101. The end of the second intermediate crossbeam 121 is inserted into the groove of the second intermediate crossbeam connector 120. The upper top wall of the second intermediate crossbeam connector 120 is screwed to the upper top wall of the second intermediate crossbeam 121, and the lower bottom wall of the second intermediate crossbeam connector 120 is screwed to the lower bottom wall of the second intermediate crossbeam 121.

[0077] The side wall length of the second intermediate crossbeam connector 120 is greater than the width of the second intermediate crossbeam 121. Along the extension direction from the top wall of the second intermediate crossbeam connector 120 to the second intermediate crossbeam 121, the width of the top wall of the second intermediate crossbeam connector 120 gradually narrows.

[0078] The side wall length of the second intermediate crossbeam connector 120 specifically refers to the length along the longitudinal beam 101, and the top wall width of the second intermediate crossbeam connector 120 specifically refers to the length along the longitudinal beam 101.

[0079] Since there are no reinforcing plates on the longitudinal beams 101 outside the second intermediate crossbeam 121, the second intermediate crossbeam connector 120 is made as a whole to ensure structural strength. Both the second intermediate crossbeam 121 and the second intermediate crossbeam connector 120 are made using a practical aluminum alloy extrusion process.

[0080] As a preferred embodiment of this utility model, the first upper crossbeam assembly 106 includes a first upper crossbeam 122 and a first upper crossbeam connector 123. The first upper crossbeam connector 123 is disposed on the outer surface of the side wall of the longitudinal beam 101, and has an L-shaped structure. The first side of the first upper crossbeam connector 123 is screwed to the side wall of the longitudinal beam 101. The first upper crossbeam 122 has a plate-like structure with an upwardly bent protrusion in its middle portion to improve the overall structural stability of the first upper crossbeam 122. The first upper crossbeam 122 is disposed at the upper end of the longitudinal beam 101, and its end is screwed to the second side of the first upper crossbeam connector 123. The upper surface of the second side of the first upper crossbeam connector 123 is on the same plane as the upper surface of the upper top wall of the longitudinal beam 101.

[0081] The structural design of the first upper crossbeam assembly 106 can improve the connection stability between the first upper crossbeam assembly 106 and the longitudinal beam 101.

[0082] As a preferred embodiment of this utility model, the second upper crossbeam assembly 107 includes a second upper crossbeam 124, a second upper crossbeam reinforcing block 125, and a second upper crossbeam connector 126. The second upper crossbeam 124 is a square tube structure, manufactured using an aluminum alloy extrusion process. The second upper crossbeam reinforcing block 125 is a square block structure with a weight-reducing through-hole in its center. The second upper crossbeam reinforcing block 125 is disposed within the square tube of the second upper crossbeam 124 and located at its end. The outer surface of the second upper crossbeam reinforcing block 125 is in contact with the inner surface of the second upper crossbeam 124. The second upper crossbeam reinforcing block 125 is initially connected and positioned to the second upper crossbeam 124 by plug welding.

[0083] The second upper crossbeam connector 126 is disposed on the outer surface of the side wall of the longitudinal beam 101. It has an L-shaped structure, and the first side of the second upper crossbeam connector 126 is screwed to the side wall of the longitudinal beam 101. The upper end face of the second side of the second upper crossbeam connector 126 is on the same plane as the upper end face of the upper top wall of the longitudinal beam 101. A connecting reinforcing rib is provided between the first side and the second side of the second upper crossbeam connector 126 to increase the load that the second upper crossbeam connector 126 can bear.

[0084] The second upper crossbeam 124 is located at the upper end of the longitudinal beam 101. Bolts pass through the end side wall of the second upper crossbeam 124, the second upper crossbeam reinforcing block 125, and the second side of the second upper crossbeam connector 126, fixing the three together.

[0085] The structural design of the second upper crossbeam reinforcing block 125 enhances the connection strength between the second upper crossbeam 124 and the second upper crossbeam connector 126, while also preventing deformation caused by excessive stress on the ends of the second upper crossbeam 124. Compared to designing the second upper crossbeam 124 as a solid structure or increasing its wall thickness, using the second upper crossbeam reinforcing block 125 ensures weight reduction for the second upper crossbeam 124 while maintaining the stability of the connection structure.

[0086] The third upper crossbeam assembly 108 has the same structure as the second upper crossbeam assembly 107.

[0087] As a preferred technical solution of this utility model, the cross-section of the outer reinforcing plate 103 in the middle section of the longitudinal beam is an L-shaped structure, with its first side screwed to the side wall of the longitudinal beam 101, and the plane of the upper end face of the second side being located on the same plane as the plane of the upper end face of the upper top wall of the longitudinal beam 101.

[0088] The fourth upper crossbeam assembly 109 includes a fourth upper crossbeam 127 and a fourth upper crossbeam reinforcing block 128. The fourth upper crossbeam 127 is a square tube structure, manufactured using an aluminum alloy extrusion process. The fourth upper crossbeam reinforcing block 128 is a square block structure with a weight-reducing through-hole in its center. The fourth upper crossbeam reinforcing block 128 is disposed within the square tube of the fourth upper crossbeam 127 and located at its end. The outer surface of the fourth upper crossbeam reinforcing block 128 is in contact with the inner surface of the fourth upper crossbeam 127. The fourth upper crossbeam 127 is located at the upper end of the longitudinal beam 101. Bolts pass through the end sidewall of the fourth upper crossbeam 127, the fourth upper crossbeam reinforcing block 128, and the second side of the outer reinforcing plate 103 in the middle section of the longitudinal beam, fixing the three together. The width of the fourth upper crossbeam 127 is wider than the widths of the second upper crossbeam 124 and the third upper crossbeam, used to improve the structural strength of the fourth upper crossbeam 127.

[0089] The fifth upper crossbeam assembly 110 includes a fifth upper crossbeam 129, which is a plate-like structure with an upwardly curved protrusion in its middle section to enhance its structural strength. The fifth upper crossbeam 129 is located at the upper end of the longitudinal beam 101, and its end is bolted to the second side of the outer reinforcing plate 103 in the middle section of the longitudinal beam.

[0090] The outer reinforcing plate 103 of the middle section of the longitudinal beam can be used to strengthen the structure of the longitudinal beam 101, and can also serve as a connector for connecting the fourth upper crossbeam assembly 109 and the fifth upper crossbeam assembly 110 to the longitudinal beam 101, replacing the solution of setting additional connectors, reducing the number of connectors used, and further increasing the overall weight of the frame.

[0091] As a preferred technical solution of this utility model, the third intermediate crossbeam assembly 111 includes a third intermediate crossbeam 130, an upper connector 131 for the third intermediate crossbeam, and a lower connector 132 for the third intermediate crossbeam.

[0092] The longitudinal beam 101 is provided with a cutting part at one end away from the first intermediate crossbeam assembly 104. The cutting part is formed by cutting the upper top wall of the longitudinal beam 101 together from the middle of the side wall upward at the end position of the longitudinal beam 101.

[0093] The third intermediate crossbeam upper connector 131 includes an upper top wall 133 and a side wall 134, with the upper top wall 133 located at the upper end of the side wall 134.

[0094] The top wall 133 of the connector includes an inclined portion 135 and a flat plate connecting portion 136.

[0095] The inclined portion 135 of the upper top wall 133 of the connector is an upwardly inclined plate structure, and its inclination angle is the same as the cutting angle of the cutting portion of the longitudinal beam 101. The flat plate connecting portion 136 is disposed at the front end of the inclined portion 135, and the flat plate connecting portion 136 is arranged parallel to the upper top wall of the longitudinal beam 101. The flat plate connecting portion 136 is located below the upper top wall of the longitudinal beam 101 and is screwed to the upper top wall of the longitudinal beam 101.

[0096] The third intermediate crossbeam 130 is a U-shaped channel structure with its opening facing the direction of the first intermediate crossbeam 115. Weight-reducing holes are provided on the side wall of the third intermediate crossbeam 130. The upper top wall of the third intermediate crossbeam 130 is inclined, so that the upper top wall of the third intermediate crossbeam 130 is parallel to the inclined portion 135 of the upper top wall 133 of the connector, and the upper top wall of the third intermediate crossbeam 130 and the inclined portion 135 of the upper top wall 133 of the connector are screwed together.

[0097] The side wall of the third crossbeam connector is screwed to the side wall of the longitudinal beam 101.

[0098] The lower connector 132 of the third intermediate crossbeam has an L-shaped structure. The first side of the lower connector 132 of the third intermediate crossbeam is screwed to the side wall of the longitudinal beam 101, and the second side of the lower connector 132 of the third intermediate crossbeam is screwed to the bottom wall of the third intermediate crossbeam 130, so that the third intermediate crossbeam assembly 111 can be connected to the top wall, side wall and bottom wall of the longitudinal beam 101 at the same time, thereby improving the structural stability of the connection between the third intermediate crossbeam assembly 111 and the longitudinal beam 101.

[0099] As a preferred technical solution of this utility model, it also includes a split crossbeam module 200.

[0100] The split-type crossbeam module 200 includes a lower crossbeam U-shaped beam 201, a lower crossbeam intermediate beam 202, a connecting corner block 203, and a first gas cylinder clamp 204. The lower crossbeam U-shaped beam 201 is a U-shaped structure made of aluminum alloy square tubing through a bending process, with its open side facing upwards. It includes a lower crossbeam bottom edge 205, a lower crossbeam first edge 206, and a lower crossbeam second edge 207. The lower parts of the lower crossbeam first edge 206 and the lower crossbeam second edge 207 are connected to the lower crossbeam bottom edge 205, forming a U-shaped lower crossbeam U-shaped beam 201. The lower crossbeam first edge 206 is screwed to the outer surface of the sidewall of a set of longitudinal beams 101, and the lower crossbeam second edge 207 is screwed to the outer surface of the sidewall of another set of longitudinal beams 101, thus connecting the lower crossbeam U-shaped beam 201 to the longitudinal beams 101. The lower crossbeam intermediate beam 202 is laterally positioned within the opening of the lower crossbeam U-shaped beam 201. The connecting corner block 203 is positioned at the end of the lower crossbeam intermediate beam 202. The connecting corner block 203 is L-shaped, and a reinforcing rib is provided between its first and second sides. The first side of the connecting corner block 203 is screwed to the first side 206 / second side 207 of the lower crossbeam, and the second side of the connecting corner block 203 is horizontally screwed to the lower crossbeam intermediate beam 202, thereby achieving the connection between the lower crossbeam intermediate beam 202 and the lower crossbeam U-shaped beam 201.

[0101] First gas cylinder clamps 204 are provided on the bottom edge 205 and the middle beam 202 of the lower crossbeam U-shaped beam 201 for clamping the hydrogen storage cylinder 500. A gas cylinder pad 208 is also provided between the hydrogen storage cylinder 500 and the lower crossbeam / middle beam 202 of the lower crossbeam U-shaped beam 201. The gas cylinder pad 208 is made of rubber and can realize the shock absorption function.

[0102] The split-type crossbeam module 200 has two sets. The first set of split-type crossbeam modules 200 is located between the first upper crossbeam assembly 106 and the second upper crossbeam assembly 107, and the second set of split-type crossbeam modules 200 is located between the third upper crossbeam assembly 108 and the fourth upper crossbeam assembly 109. The two sets of split-type crossbeam modules 200 clamp the front of the hydrogen storage cylinder 500. Since there is a suspension at the rear of the vehicle frame, the hydrogen storage cylinder 500 located above the suspension is supported by the suspension.

[0103] Traditional steel heavy-duty truck frames, due to space limitations in the crossbeams, can only install gas cylinders on the side of the frame. Compared to traditional steel heavy-duty trucks, this utility model, by placing the first upper crossbeam assembly 106, the second upper crossbeam assembly 107, the third upper crossbeam assembly 108, the fourth upper crossbeam assembly 109, and the fifth upper crossbeam assembly 110 all at the upper end of the longitudinal beam 101, ensures structural stability while allowing the hydrogen storage cylinder 500 to be located between the two sets of longitudinal beams 101, providing space for the installation of the hydrogen storage cylinder 500. When the heavy-duty truck rolls over, the gas cylinder located between the two sets of longitudinal beams 101 is prevented from being directly impacted, improving safety performance. At the same time, it can optimize the position of the vehicle's center of gravity, making the center of gravity laterally centered, reducing the risk of tilting, and also reducing the impact of center of gravity transfer during dynamic driving, improving the overall vehicle handling. The two sets of longitudinal beams 101 serve as the main load-bearing components of the frame. By installing the gas cylinder in the middle area of ​​the two sets of longitudinal beams 101, the weight can be evenly transferred to the left and right longitudinal beams 101 through the crossbeam, avoiding excessive load on one side of the longitudinal beam 101.

[0104] Specifically, the lower crossbeam U-shaped beam 201 has two sets of first gas cylinder clamps 204 on its bottom edge 205, and the lower crossbeam middle beam 202 has two sets of first gas cylinder clamps 204.

[0105] Except for the first gas cylinder clamp 204, the split beam module 200 is made of aluminum alloy.

[0106] As a preferred technical solution of this utility model, it also includes a hydrogen energy integrated module 300 and a guardrail 400.

[0107] The hydrogen energy integrated module 300 includes a side cylinder bracket 301, a cylinder bracket intermediate crossbeam 302, and a second cylinder clamp 303. The upper part of the side cylinder bracket 301 is screwed to the outer surface of the side wall of the longitudinal beam 101. The middle part of the side cylinder bracket 301 is provided with a transversely arranged cylinder bracket intermediate crossbeam 302, so that the side cylinder bracket 301 and the cylinder bracket intermediate crossbeam 302 form a T-shaped structure. The second cylinder clamp 303 is provided in the area between the upper end face of the cylinder bracket intermediate crossbeam 302 and the side cylinder bracket 301, and in the area between the lower end face of the cylinder bracket intermediate crossbeam 302 and the side cylinder bracket 301. Each longitudinal beam 101 is equipped with two sets of hydrogen energy integrated modules 300. The first set of hydrogen energy integrated modules 300 is located on the longitudinal beam 101 between the first upper crossbeam assembly 106 and the second upper crossbeam assembly 107, and the second set of hydrogen energy integrated modules 300 is located on the longitudinal beam 101 between the third upper crossbeam assembly 108 and the fourth upper crossbeam assembly 109. The two sets of hydrogen energy integrated modules 300 can hold two hydrogen storage cylinders 500. The guardrail 400 is connected to the intermediate crossbeam 302 of the cylinder support of the two sets of hydrogen energy integrated modules 300 respectively.

[0108] like Figure 2As shown, through the above design, small gas cylinders can be suspended on the side of the longitudinal beam 101 of the vehicle frame, and a guardrail 400 can be installed to increase the gas cylinder carrying capacity and minimize the offset of the lateral center. The guardrail 400 protects the gas cylinders suspended on the side when the heavy truck rolls over or collides.

[0109] As a preferred technical solution of this utility model, it also includes an inner reinforcing plate 137 in the middle section of the longitudinal beam, which has a U-shaped groove structure and is disposed on the inner surface of the side wall of the longitudinal beam 101. The side wall of the inner reinforcing plate 137 in the middle section of the longitudinal beam is screwed to the side wall of the longitudinal beam 101 to further enhance the structural strength of the longitudinal beam 101.

[0110] In summary, this utility model uses aluminum alloy to manufacture the heavy truck frame, which reduces weight by 32% compared to a steel frame of the same tonnage due to its low density, resulting in a 19% reduction in overall vehicle energy consumption. The self-passivating and corrosion-resistant properties of aluminum alloy allow the frame to maintain structural integrity even in harsh environments. At the same time, the excellent formability of aluminum alloy enables integrated structural design, reducing welding defects. In the event of a collision, the controllable deformation characteristics of aluminum alloy significantly improve energy absorption efficiency, ensuring driving safety.

[0111] Each crossbeam assembly and longitudinal beam 101 are connected using high-strength bolts and anti-loosening nuts, which reduces thermal deformation defects and increases connection strength by 25% compared to traditional welding processes.

[0112] The first intermediate crossbeam assembly (104), the second intermediate crossbeam assembly (105), the first upper crossbeam assembly (106), the second upper crossbeam assembly (107), the third upper crossbeam assembly (108), the fourth upper crossbeam assembly (109), the fifth upper crossbeam assembly (110), and the third intermediate crossbeam assembly (111) in the overall frame are used to bear horizontal loads (such as lateral forces when the vehicle is turning).

[0113] The split-type crossbeam module 200 primarily bears vertical loads, such as the weight of gas cylinders. This design improves the overall stress distribution uniformity of the frame by 30%, avoiding the technical problem of localized overload.

[0114] Unlike the segmented welded structure of existing aluminum alloy frames, this utility model reduces the number of welds by 70% and increases fatigue strength by 40% by integrally extruding and forming the longitudinal beam 101.

[0115] To meet the special requirements of hydrogen energy systems: For heavy-duty hydrogen energy transport vehicles, to achieve the scientific layout and reliable fixation of components such as hydrogen storage tanks in the hydrogen energy system, to optimize the vehicle's center of gravity distribution and improve driving stability; at the same time, to meet the safety issues of hydrogen energy systems such as shock resistance and leakage prevention in structural design.

[0116] The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be included within the protection scope of the present invention.

Claims

1. A split-type crossbeam aluminum alloy frame for heavy trucks, characterized in that, The vehicle includes a main frame module (100), which includes two sets of relatively parallel and spaced longitudinal beams (101), a first intermediate crossbeam assembly (104), a second intermediate crossbeam assembly (105), a first upper crossbeam assembly (106), a second upper crossbeam assembly (107), a third upper crossbeam assembly (108), a fourth upper crossbeam assembly (109), a fifth upper crossbeam assembly (110), a third intermediate crossbeam assembly (111), and a front section reinforcing plate (102) and a middle section outer reinforcing plate (103) on the longitudinal beams (101). Both sets of longitudinal beams (101) are U-shaped channel structures, and several sets of weight-reducing holes are evenly arrayed on the side wall of the longitudinal beams (101). The front section reinforcing plate (102) of the longitudinal beam is disposed at the front end of the longitudinal beam (101) and is located on the outer surface of the side wall of the longitudinal beam (101) at the connection position between the first intermediate crossbeam assembly (104) and the longitudinal beam (101). The middle section outer reinforcing plate (103) of the longitudinal beam is disposed on the outer surface of the side wall of the longitudinal beam (101). The first intermediate crossbeam assembly (104), the second intermediate crossbeam assembly (105), the third intermediate crossbeam assembly (111), the first upper crossbeam assembly (106), the second upper crossbeam assembly (107), the third upper crossbeam assembly (108), the front section reinforcing plate (102), the outer side reinforcing plate of the middle section of the longitudinal beam (103), and the inner side reinforcing plate of the middle section of the longitudinal beam (137) are all connected to the longitudinal beam (101) by bolting. The longitudinal beam (101), the first intermediate crossbeam assembly (104), the second intermediate crossbeam assembly (105), the third intermediate crossbeam assembly (111), the first upper crossbeam assembly (106), the second upper crossbeam assembly (107), the third upper crossbeam assembly (108), the front section reinforcing plate (102) of the longitudinal beam, and the outer side reinforcing plate (103) of the middle section of the longitudinal beam are all made of aluminum alloy.

2. The split-type crossbeam aluminum alloy frame for heavy trucks according to claim 1, characterized in that, The front section reinforcing plate (102) of the longitudinal beam includes an upper fixing plate (112), a lower fixing plate (113), and a connecting plate (114). The upper fixing plate (112) and the lower fixing plate (113) have the same structure and are both provided with weight-reducing through holes. The upper fixing plate (112) and the lower fixing plate (113) are connected by the connecting plate (114). The first intermediate crossbeam assembly (104) includes a first intermediate crossbeam (115), a lower connector of the first intermediate crossbeam (116), and an upper connector of the first intermediate crossbeam (117). The first intermediate crossbeam (115) is a U-shaped groove structure with its groove opening facing the rear. The surface of the first intermediate crossbeam (115) is provided with a weight-reducing through hole. The upper end of the first intermediate crossbeam (115) is connected to the longitudinal beam (101) through the upper connector (117) of the first intermediate crossbeam, and the lower end of the first intermediate crossbeam (115) is connected to the longitudinal beam (101) through the lower connector (116) of the first intermediate crossbeam. The first intermediate crossbeam upper connector (117) and the first intermediate crossbeam lower connector (116) have the same structure, are symmetrically arranged and are both located in the U-shaped groove of the longitudinal beam (101), and both include a first longitudinal beam connecting plate (118) and a first intermediate crossbeam connecting plate (119). The first longitudinal beam connecting plate (118) is a long straight plate structure. The first longitudinal beam connecting plate (118) is connected to the side wall of the longitudinal beam (101) and the upper fixing plate (112) / lower fixing plate (113) of the front section reinforcing plate (102) of the longitudinal beam by a set of bolts. One end of the first intermediate crossbeam connecting plate (119) is connected to the first longitudinal beam connecting plate (118), and the first intermediate crossbeam connecting plate (119) is screwed to the upper top wall / lower bottom wall of the longitudinal beam (101). The other end of the first intermediate crossbeam connecting plate (119) extends toward the end of the first intermediate crossbeam (115) and is screwed to the end of the first intermediate crossbeam (115). Along the extension direction of the first intermediate crossbeam connecting plate (119) toward the first intermediate crossbeam (115), the width of the first intermediate crossbeam connecting plate (119) gradually narrows. The length of the first longitudinal beam connecting plate (118) is greater than the width of the first intermediate crossbeam (115).

3. The split-type crossbeam aluminum alloy frame for heavy trucks according to claim 1, characterized in that, The second intermediate crossbeam assembly (105) includes a second intermediate crossbeam connector (120) and a second intermediate crossbeam (121); The second intermediate crossbeam (121) is a U-shaped groove structure with its groove opening facing the rear. The second intermediate crossbeam connector (120) is a U-shaped groove structure. The side wall of the second intermediate crossbeam connector (120) is screwed to the side wall of the longitudinal beam (101). The end of the second intermediate crossbeam (121) is inserted into the groove of the second intermediate crossbeam connector (120). The upper top wall of the second intermediate crossbeam connector (120) is screwed to the upper top wall of the second intermediate crossbeam (121). The lower bottom wall of the second intermediate crossbeam connector (120) is screwed to the lower bottom wall of the second intermediate crossbeam (121). The side wall length of the second intermediate crossbeam connector (120) is greater than the width of the second intermediate crossbeam (121). Along the extension direction from the top wall of the second intermediate crossbeam connector (120) to the second intermediate crossbeam (121), the width of the top wall of the second intermediate crossbeam connector (120) gradually narrows.

4. The split-type crossbeam aluminum alloy frame for heavy trucks according to claim 1, characterized in that, The first upper crossbeam assembly (106) includes a first upper crossbeam (122) and a first upper crossbeam connector (123); the first upper crossbeam connector (123) is disposed on the outer surface of the side wall of the longitudinal beam (101), and it is an L-shaped structure. The first side of the first upper crossbeam connector (123) is screwed to the side wall of the longitudinal beam (101); the first upper crossbeam (122) is a plate-shaped structure, and its middle part is provided with an upward bending protrusion. The first upper crossbeam (122) is disposed at the upper end of the longitudinal beam (101), and the end of the first upper crossbeam (122) is screwed to the second side of the first upper crossbeam connector (123).

5. A split-type crossbeam aluminum alloy chassis for heavy trucks according to claim 1, characterized in that, The second upper crossbeam assembly (107) includes a second upper crossbeam (124), a second upper crossbeam reinforcing block (125), and a second upper crossbeam connector (126); the second upper crossbeam (124) is a square tube structure, the second upper crossbeam reinforcing block (125) is a square block structure, and a weight-reducing through hole is provided in the middle of the block. The second upper crossbeam reinforcing block (125) is located inside the square tube of the second upper crossbeam (124) and at the end position. The outer surface of the second upper crossbeam reinforcing block (125) is in contact with the inner surface of the second upper crossbeam (124). The second upper crossbeam connector (126) is disposed on the outer surface of the side wall of the longitudinal beam (101). It has an L-shaped structure. The first side of the second upper crossbeam connector (126) is screwed to the side wall of the longitudinal beam (101). The upper end face of the second side of the second upper crossbeam connector (126) is on the same plane as the upper end face of the upper top wall of the longitudinal beam (101). A connecting reinforcing rib is provided between the first side and the second side of the second upper crossbeam connector (126). The second upper crossbeam (124) is located at the upper end of the longitudinal beam (101). Bolts pass through the end side wall of the second upper crossbeam (124), the second upper crossbeam reinforcing block (125), and the second side of the second upper crossbeam connector (126) to fix the three together. The third upper crossbeam assembly (108) has the same structure as the second upper crossbeam assembly (107).

6. A split-type crossbeam aluminum alloy frame for heavy trucks according to claim 1, characterized in that, The cross-section of the outer reinforcing plate (103) in the middle section of the longitudinal beam is an L-shaped structure. Its first side is screwed to the side wall of the longitudinal beam (101), and the plane of the upper end face of the second side is on the same plane as the plane of the upper end face of the upper top wall of the longitudinal beam (101). The fourth upper crossbeam assembly (109) includes a fourth upper crossbeam (127) and a fourth upper crossbeam reinforcing block (128). The fourth upper crossbeam (127) is a square tube structure, and the fourth upper crossbeam reinforcing block (128) is a square block structure with a weight-reducing through hole in the middle. The fourth upper crossbeam reinforcing block (128) is located inside the square tube of the fourth upper crossbeam (127) and at the end position. The outer surface of the fourth upper crossbeam reinforcing block (128) is in contact with the inner surface of the fourth upper crossbeam (127). The fourth upper crossbeam (127) is located at the upper end of the longitudinal beam (101). Bolts pass through the end side wall of the fourth upper crossbeam (127), the fourth upper crossbeam reinforcing block (128), and the second side of the outer reinforcing plate (103) in the middle section of the longitudinal beam, and fix the three together. The fifth upper crossbeam assembly (110) includes a fifth upper crossbeam (129), which is a plate-shaped structure with an upwardly curved protrusion in the middle. The fifth upper crossbeam (129) is located at the upper end of the longitudinal beam (101), and the end of the fifth upper crossbeam (129) is bolted to the second side of the outer reinforcing plate (103) in the middle section of the longitudinal beam.

7. A split-type crossbeam aluminum alloy chassis for heavy trucks according to claim 1, characterized in that, The third intermediate crossbeam assembly (111) includes a third intermediate crossbeam (130), an upper connector (131) for the third intermediate crossbeam, and a lower connector (132) for the third intermediate crossbeam. The longitudinal beam (101) has a cutting part at one end away from the first intermediate crossbeam assembly (104). The cutting part is formed by cutting the upper top wall of the longitudinal beam (101) together from the middle of the side wall upward at the end position of the longitudinal beam (101). The third intermediate crossbeam upper connector (131) includes an upper top wall (133) and a side wall (134). The upper top wall (133) is located at the upper end of the side wall (134). The upper top wall (133) includes an inclined part (135) and a flat plate connecting part (136). The inclined part (135) is an upwardly inclined plate structure with an inclination angle that is the same as the cutting angle of the cutting part of the longitudinal beam (101). The flat plate connecting part (136) is located at the front end of the inclined part (135) and is parallel to the upper top wall of the longitudinal beam (101). The flat plate connecting part (136) is located below the upper top wall of the longitudinal beam (101) and is screwed to the upper top wall of the longitudinal beam (101). The third intermediate crossbeam (130) is a U-shaped channel structure. The side wall of the third intermediate crossbeam (130) is provided with weight reduction holes. The upper top wall of the third intermediate crossbeam (130) is inclined so that the upper top wall of the third intermediate crossbeam (130) is parallel to the inclined part (135) of the upper top wall (133) of the connector. The upper top wall of the third intermediate crossbeam (130) is screwed to the inclined part (135) of the upper top wall (133) of the connector. The side wall of the lower connector of the third crossbeam is screwed to the side wall of the longitudinal beam (101). The lower connector of the third intermediate crossbeam (132) is an L-shaped structure. The first side of the lower connector of the third intermediate crossbeam (132) is screwed to the side wall of the longitudinal beam (101), and the second side of the lower connector of the third intermediate crossbeam (132) is screwed to the bottom wall of the third intermediate crossbeam (130).

8. A split-type crossbeam aluminum alloy frame for heavy trucks according to claim 1, characterized in that, It also includes a split beam module (200); The split-type crossbeam module (200) includes a lower crossbeam U-shaped beam (201), a lower crossbeam middle beam (202), a connecting corner block (203), and a first gas cylinder clamp (204). The lower crossbeam U-shaped beam (201) is a U-shaped structure made of aluminum alloy square tube through a bending process. Its opening side faces upward and includes the lower crossbeam bottom edge (205), the lower crossbeam first edge (206), and the lower crossbeam second edge (207). The lower part of the lower crossbeam first edge (206) and the lower crossbeam second edge (207) are connected to the lower crossbeam bottom edge (205) to splice the lower crossbeam U-shaped beam (201) into a U-shaped structure. The lower crossbeam first edge (206) is screwed to the outer surface of the side wall of a set of longitudinal beams (101), and the lower crossbeam second edge (207) is screwed to the outer surface of the side wall of another set of longitudinal beams (101). The lower crossbeam intermediate beam (202) is horizontally arranged in the opening of the lower crossbeam U-shaped beam (201). It is made of aluminum alloy. The connecting corner block (203) is set at the end of the lower crossbeam intermediate beam (202). The connecting corner block (203) is L-shaped. There is a reinforcing rib between the first side and the second side of the connecting corner block (203). The first side of the connecting corner block (203) is screwed to the first side (206) / second side (207) of the lower crossbeam. The second side of the connecting corner block (203) is horizontally screwed to the lower crossbeam intermediate beam (202). The lower crossbeam U-shaped beam (201) is provided with a first gas cylinder clamp (204) on the bottom edge (205) of the lower crossbeam and on the middle beam (202) of the lower crossbeam. The split beam module (200) is provided in two groups. The first group of split beam modules (200) is located between the first upper beam assembly (106) and the second upper beam assembly (107), and the second group of split beam modules (200) is located between the third upper beam assembly (108) and the fourth upper beam assembly (109).

9. A split-type crossbeam aluminum alloy frame for heavy trucks according to claim 1, characterized in that, It also includes a hydrogen energy integrated module (300) and a guardrail (400); The hydrogen energy integrated module (300) includes a side cylinder bracket (301), a cylinder bracket intermediate crossbeam (302), and a second cylinder clamp (303). The upper part of the side cylinder bracket (301) is screwed to the outer surface of the side wall of the longitudinal beam (101). The middle part of the side cylinder bracket (301) is provided with a transversely arranged cylinder bracket intermediate crossbeam (302), so that the side cylinder bracket (301) and the cylinder bracket intermediate crossbeam (302) form a T-shaped structure. The area between the upper end face of the cylinder bracket intermediate crossbeam (302) and the side cylinder bracket (301), and the area between the lower end face of the cylinder bracket intermediate crossbeam (302) and the side cylinder bracket (301) are located in the same region. A second gas cylinder clamp (303) is provided in the area between the gas cylinder brackets (301); two sets of hydrogen energy integrated modules (300) are provided on each longitudinal beam (101), the first set of hydrogen energy integrated modules (300) is set on the longitudinal beam (101) between the first upper crossbeam assembly (106) and the second upper crossbeam assembly (107), the second set of hydrogen energy integrated modules (300) is set on the longitudinal beam (101) between the third upper crossbeam assembly (108) and the fourth upper crossbeam assembly (109), and the guardrail (400) is connected to the middle crossbeam (302) of the gas cylinder bracket of the two sets of hydrogen energy integrated modules (300); The side cylinder bracket (301), the middle crossbeam (302) of the cylinder bracket, and the guardrail (400) of the hydrogen energy integrated module (300) are all made of aluminum alloy.

10. A split-type crossbeam aluminum alloy frame for heavy trucks according to claim 1, characterized in that, It also includes an inner reinforcing plate (137) in the middle section of the longitudinal beam, which is a U-shaped groove structure and is set on the inner surface of the side wall of the longitudinal beam (101). The side wall of the inner reinforcing plate (137) in the middle section of the longitudinal beam is screwed to the side wall of the longitudinal beam (101).

Images