Split type cross beam aluminum alloy frame for heavy truck

Abstract

The invention discloses a split type cross beam aluminum alloy frame for a heavy truck, which belongs to the technical field of hydrogen energy heavy truck manufacturing, is integrally made of an aluminum alloy material, realizes replacement of steel with aluminum, and comprises a main body frame module. The module comprises two groups of longitudinal beams which are arranged in parallel at intervals, lightening holes are formed in the side walls of the longitudinal beams, longitudinal beam front-section reinforcing plates are arranged at the front ends, and middle-section outer-side reinforcing plates are arranged on the outer sides of the side walls. And first to third middle cross beam assemblies and first to fifth upper cross beam assemblies are sequentially arranged between the two groups of longitudinal beams from front to back. The cross beam assemblies and the reinforcing plates are connected with the longitudinal beams in a threaded mode. The longitudinal beams, the cross beam assemblies, the front section reinforcing plates and the middle section outer side reinforcing plates are all made of aluminum alloy materials. By means of the arrangement, the weight of the whole frame is reduced by 32%, all the components are connected in a screwed mode, and the fatigue strength is improved by 40%.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, and in particular to a split-beam aluminum alloy frame for heavy trucks. Background Art

[0002] In the field of vehicle engineering, heavy-duty trucks, as crucial transport equipment, have long been a hot topic of research in chassis and frame design and optimization. In recent years, with the rapid development of the logistics industry, requirements for heavy-duty trucks' load-carrying capacity, reliability, and lightweight design have continued to increase. Hydrogen, as a clean and efficient energy source, has increasingly attracted attention for its use in heavy-duty transport vehicles, posing new challenges and demands on heavy-duty truck chassis and frame structures. The industry is constantly exploring new materials and structural designs to enhance heavy-duty truck performance, with innovative design concepts such as split crossbeam structures beginning to be applied in heavy-duty truck chassis and frame design. Currently, heavy-duty truck frames are mostly constructed of steel. This high density results in a large curb weight and significantly increases fuel consumption. Furthermore, steel has poor corrosion resistance, requiring regular rust prevention treatment and resulting in high maintenance costs. Furthermore, steel frames are complex to manufacture, require high energy consumption during molding, and have insufficient energy absorption in collisions, posing safety risks. Therefore, a lightweight, highly reliable frame material and structure are urgently needed. The weight reduction of existing steel frames is generally less than 15%, while aluminum alloy frames have achieved a 30% weight reduction in the passenger car field, but their application in the heavy truck field is still limited by structural strength design difficulties. Summary of the Invention

[0003] In view of this, the present invention discloses a split cross-beam aluminum alloy frame for heavy trucks, the specific solution of which is as follows: A split-beam aluminum alloy frame for a heavy truck includes a main frame module, the main frame module including 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, a third intermediate crossbeam assembly, and a longitudinal beam front section reinforcement plate and a longitudinal beam middle section outer side reinforcement plate provided on the longitudinal beams. The two sets of longitudinal beams are both trough structures with a U-shaped cross section, and a plurality of weight-reducing holes are evenly arranged on the side walls of the longitudinal beams; The longitudinal beam front section reinforcement plate is provided at the front end of the longitudinal beam and is located on the outer surface of the longitudinal beam side wall at the connection position between the first intermediate cross beam assembly and the longitudinal beam; the longitudinal beam middle section outer side reinforcement plate is provided on the outer surface of the longitudinal beam side wall; The first middle crossbeam assembly, the second middle crossbeam assembly, the third middle crossbeam assembly, the first upper crossbeam assembly, the second upper crossbeam assembly, the third upper crossbeam assembly, the longitudinal beam front section reinforcement plate, the longitudinal beam middle section outer section reinforcement plate, and the longitudinal beam middle section inner section reinforcement plate are all connected to the longitudinal beam by screw connection; The longitudinal beam, the first middle cross beam assembly, the second middle cross beam assembly, the third middle cross beam assembly, the first upper cross beam assembly, the second upper cross beam assembly, the third upper cross beam assembly, the longitudinal beam front section reinforcement plate, and the longitudinal beam middle section outer side reinforcement plate are all made of aluminum alloy.

[0004] As a supplement to the technical solution of the present invention, the longitudinal beam front section reinforcement plate 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 a connecting plate. The first intermediate crossbeam assembly includes a first intermediate crossbeam, a first intermediate crossbeam lower connecting member, and a first intermediate crossbeam upper connecting member; The first intermediate crossbeam is a trough structure with a U-shaped cross section, with the opening of the trough facing the rear side. A weight-reducing through hole is opened on the surface of the first intermediate crossbeam. The upper end of the first intermediate crossbeam is connected to the longitudinal beam via the first intermediate crossbeam upper connector, and the lower end of the first intermediate crossbeam is connected to the longitudinal beam via the first intermediate crossbeam lower connector. The first intermediate cross beam upper connecting member and the first intermediate cross beam lower connecting member have the same structure, are symmetrically arranged up and down, 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 cross beam connecting plate. The first longitudinal beam connecting plate is a long straight plate structure. The first longitudinal beam connecting plate is screwed to the side wall of the longitudinal beam and the upper fixing plate / lower fixing plate of the longitudinal beam front reinforcement plate by a set of bolts. One end of the first intermediate cross beam connecting plate is connected to the first longitudinal beam connecting plate, and the first intermediate cross beam connecting plate is screwed to the upper top wall / lower bottom wall of the longitudinal beam. The other end of the first intermediate cross beam connecting plate extends toward the end of the first intermediate cross beam and is screwed to the end of the first intermediate cross beam. Along the extension direction of the first intermediate cross beam connecting plate toward the first intermediate cross beam, the width of the first intermediate cross beam connecting plate gradually narrows; the length of the first longitudinal beam connecting plate is greater than the width of the first intermediate cross beam.

[0005] As a supplement to the technical solution of the present invention, the second intermediate crossbeam assembly includes a second intermediate crossbeam connector and a second intermediate crossbeam; The second intermediate cross beam is a trough structure with a U-shaped cross section, with its trough opening facing rearward. The second intermediate cross beam connector is a trough structure with a U-shaped cross section. The side walls of the second intermediate cross beam connector are screwed to the side walls of the longitudinal beam. The end of the second intermediate cross beam is inserted into the trough of the second intermediate cross beam connector, and the upper top wall of the second intermediate cross beam connector is screwed to the upper top wall of the second intermediate cross beam. The lower bottom wall of the second intermediate cross beam connector is screwed to the lower bottom wall of the second intermediate cross beam. The side wall length of the second intermediate crossbeam connector is greater than the width of the second intermediate crossbeam, and the width of the upper wall of the second intermediate crossbeam connector gradually narrows along the extension direction of the upper wall of the second intermediate crossbeam connector toward the second intermediate crossbeam.

[0006] As a supplement to the technical solution of the present invention, the first upper crossbeam assembly includes a first upper crossbeam and a first upper crossbeam connecting member; the first upper crossbeam connecting member is arranged on the outer surface of the side wall of the longitudinal beam, and it is an L-shaped structure, and the first side of the first upper crossbeam connecting member is screwed to the side wall of the longitudinal beam; the first upper crossbeam is a plate-like structure, and an upward bending protrusion is provided in the middle thereof, the first upper crossbeam is arranged 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 connecting member.

[0007] As a supplement to the technical solution of the present invention, the second upper crossbeam assembly includes a second upper crossbeam, a second upper crossbeam reinforcement block, and a second upper crossbeam connector; the second upper crossbeam is a square tube structure, the second upper crossbeam reinforcement block is a square block structure, a weight-reducing through hole is provided in the middle thereof, the second upper crossbeam reinforcement block is arranged in the square tube of the second upper crossbeam and is located at the end position, and the outer surface of the second upper crossbeam reinforcement block is in contact with the inner surface of the second upper crossbeam; The second upper cross beam connector is provided on the outer surface of the side wall of the longitudinal beam and is an L-shaped structure. The first side of the second upper cross beam connector is screwed to the side wall of the longitudinal beam, and the upper end surface of the second side of the second upper cross beam connector is located on the same plane as the upper end surface of the upper top wall of the longitudinal beam; a connector reinforcement rib is provided between the first side and the second side of the second upper cross beam connector; The second upper crossbeam is arranged at the upper end of the longitudinal beam, and the bolts penetrate the end side wall of the second upper crossbeam, the second upper crossbeam reinforcement block and the second side of the second upper crossbeam connector to securely connect the three; The third upper crossbeam assembly has the same structure as the second upper crossbeam assembly.

[0008] As a supplement to the technical solution of the present invention, the cross-section of the outer reinforcement plate of the middle section of the longitudinal beam is an L-shaped structure, the first side of which is screwed to the side wall of the longitudinal beam, and the plane where the upper end surface of the second side is located is coplanar with the plane where the upper end surface of the upper top wall of the longitudinal beam is located; The fourth upper crossbeam assembly includes a fourth upper crossbeam and a fourth upper crossbeam reinforcement block; the fourth upper crossbeam is a square tube structure, the fourth upper crossbeam reinforcement block is a square block structure, a weight-reducing through hole is provided in the middle thereof, the fourth upper crossbeam reinforcement block is arranged in the square tube of the fourth upper crossbeam and is located at the end position, the outer surface of the fourth upper crossbeam reinforcement block is in contact with the inner surface of the fourth upper crossbeam, the fourth upper crossbeam is arranged at the upper end of the longitudinal beam, and bolts penetrate the end side wall of the fourth upper crossbeam, the fourth upper crossbeam reinforcement block and the second side of the outer reinforcement plate of the middle section of the longitudinal beam to fix the three together; The fifth upper crossbeam assembly includes a fifth upper crossbeam, which is a plate-shaped structure with an upwardly curved protrusion on its middle portion. The fifth upper crossbeam is arranged at the upper end of the longitudinal beam, and the end portion of the fifth upper crossbeam is screwed to the second side of the outer reinforcing plate of the middle section of the longitudinal beam through bolts.

[0009] As a supplement to the technical solution of the present invention, the third intermediate crossbeam assembly includes a third intermediate crossbeam, a third intermediate crossbeam upper connecting member, and a third intermediate crossbeam lower connecting member; A cutting portion is provided at one end of the longitudinal beam away from the first intermediate cross beam assembly, wherein the cutting portion is formed by cutting the upper top wall of the longitudinal beam from the middle of the side wall toward the upper side at the end of the longitudinal beam; The third intermediate cross beam upper connector includes a connector upper top wall and a connector side wall. The connector upper top wall is provided at the upper end of the connector side wall. The connector upper top wall includes an inclined portion and a flat plate connecting portion. The inclined portion is an upwardly inclined plate-shaped structure, and its inclination angle is the same as the cutting angle of the cutting portion of the longitudinal beam. The flat plate connecting portion is provided at the front end of the inclined portion and is arranged parallel to the upper top wall of the longitudinal beam. The flat plate connecting portion is located below the upper top wall of the longitudinal beam and is screwed to the upper top wall of the longitudinal beam. The third intermediate crossbeam is a trough structure with a U-shaped cross section. The side walls of the third intermediate crossbeam are provided with weight-reducing 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 portion of the upper top wall of the connector. The upper top wall of the third intermediate crossbeam is screwed to the inclined portion of the upper top wall of the connector. The side wall of the lower connecting member of the third cross beam is screwed to the side wall of the longitudinal beam. The lower connecting member of the third intermediate cross beam is an L-shaped structure. The first side of the lower connecting member of the third intermediate cross beam is screwed to the side wall of the longitudinal beam, and the second side of the lower connecting member of the third intermediate cross beam is screwed to the lower bottom wall of the third intermediate cross beam.

[0010] As a supplement to the technical solution of the present invention, a split beam module is also included; The split crossbeam module includes a lower crossbeam U-shaped beam, a lower crossbeam middle beam, a connecting corner block, and a first gas cylinder clamp. The lower crossbeam U-shaped beam is a U-shaped structure made of an aluminum alloy square tube structure through a bending process. Its opening side is upward, including a lower crossbeam bottom edge, a lower crossbeam first edge, and a lower crossbeam second edge. The lower portions of the lower crossbeam first edge and the lower crossbeam second edge are connected to the lower crossbeam bottom edge to form a U-shaped lower crossbeam U-shaped structure. The lower crossbeam first edge is screwed to the outer side surface of the side wall of one group of longitudinal beams, and the lower crossbeam second edge is screwed to the outer side surface of the side wall of another group of longitudinal beams. The lower crossbeam middle beam is transversely arranged in the opening of the lower crossbeam U-shaped beam, which is made of aluminum alloy. The connecting angle block is arranged at the end position of the lower crossbeam middle beam, the connecting angle block is L-shaped, and a reinforcing rib is provided between the first side and the second side of the connecting angle block. The first side of the connecting angle block is screwed to the first side of the lower crossbeam / the second side of the lower crossbeam, and the second side of the connecting angle block is transversely screwed to the lower crossbeam middle beam; A first gas cylinder clamp is provided on the bottom edge of the lower crossbeam of the U-shaped lower crossbeam and on the middle beam of the lower crossbeam; There are two groups of split beam modules, the first group of split beam modules is located between the first upper beam assembly and the second upper beam assembly, and the second group of split beam modules is located between the third upper beam assembly and the fourth upper beam assembly.

[0011] As a supplement to the technical solution of the present invention, it also includes a hydrogen energy integration module and a protective fence; The hydrogen energy integrated module includes a side gas cylinder bracket, a gas cylinder bracket middle crossbeam, and a second gas cylinder clamp; the upper part of the side gas cylinder bracket is screwed to the outer surface of the longitudinal beam side wall, and the middle part of the side gas cylinder bracket is provided with a transversely arranged gas cylinder bracket middle crossbeam, so that the side gas cylinder bracket and the gas cylinder bracket middle crossbeam form a T-shaped structure, and the area between the upper end surface of the gas cylinder bracket middle crossbeam and the side gas cylinder bracket, as well as the area between the lower end surface of the gas cylinder bracket middle crossbeam and the side gas cylinder bracket are both provided with a second gas cylinder clamp; two groups of hydrogen energy integrated modules are provided on each longitudinal beam, the first group of hydrogen energy integrated modules is provided on the longitudinal beam between the first upper crossbeam assembly and the second upper crossbeam assembly, and the second group of hydrogen energy integrated modules is provided on the longitudinal beam between the third upper crossbeam assembly and the fourth upper crossbeam assembly, and the guardrails are respectively connected to the gas cylinder bracket middle crossbeams of the two groups of hydrogen energy integrated modules; The side gas cylinder bracket, the middle cross beam of the gas cylinder bracket and the guardrail of the hydrogen energy integrated module are all made of aluminum alloy.

[0012] As a supplement to the technical solution of the present invention, it also includes an inner reinforcing plate in the middle section of the longitudinal beam, whose cross-section is a U-shaped trough structure, which is arranged on the inner surface of the side wall of the longitudinal beam, and 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.

[0013] Beneficial Effects: The present invention discloses a split-beam aluminum alloy frame for heavy trucks, made of aluminum alloy, replacing steel with aluminum. Compared with a steel frame of the same tonnage, the frame is 32% lighter, resulting in a 19% reduction in vehicle energy consumption. The aluminum alloy's self-passivation and corrosion resistance ensure structural integrity in harsh environments. The frame structures are connected by screws, replacing traditional welding, increasing fatigue strength by 40%. Controlled deformation during a collision significantly improves energy absorption efficiency. Screws are used to connect the crossbeams and longitudinal beams instead of welding, reducing thermal deformation defects while increasing connection strength by 25%. This also facilitates assembly and disassembly, improving maintainability. The split crossbeam module utilizes a load-grading design for the upper and lower crossbeam subassemblies, improving the uniformity of frame stress distribution by 30% and avoiding local overloads. For the hydrogen energy system, the hydrogen storage cylinder is positioned between the two sets of longitudinal beams, optimizing the vehicle's center of gravity to be laterally centered to reduce the risk of rollover. The hydrogen storage tank is scientifically fixed by the split crossbeam module and the hydrogen energy integration module, and is equipped with a guardrail for collision prevention, meeting safety requirements for shock and leakage protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the invention.

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure of the invention.

[0016] Figure 3 It is a schematic diagram of the main frame module structure of the invention.

[0017] Figure 4 This is a schematic diagram of the structure of the front section reinforcement plate of the longitudinal beam.

[0018] Figure 5 This is a schematic diagram of the structure of the first intermediate crossbeam assembly of the invention.

[0019] Figure 6 This is a schematic structural diagram of the second middle crossbeam assembly, the first upper crossbeam assembly, and the second upper crossbeam assembly.

[0020] Figure 7 This is a schematic diagram of the structure of the second intermediate crossbeam assembly of the invention.

[0021] Figure 8 This is a schematic structural diagram of the fourth and fifth upper crossbeam assemblies of the invention.

[0022] Figure 9 This is a schematic diagram of the structure of the third intermediate crossbeam assembly of the invention.

[0023] Figure 10 This is a schematic diagram of the structure of the connecting piece on the third middle cross beam of the invention.

[0024] Figure 11 This is a schematic diagram of the assembly structure of the longitudinal beam and the inner reinforcement plate in the middle section of the longitudinal beam.

[0025] Figure 12 This is a schematic diagram of the structure of the split beam module.

[0026] Figure 13 This is a schematic diagram of the structure of the invented hydrogen energy integrated module.

[0027] In the figure: 100. Main frame module, 101. Longitudinal beam, 102. Longitudinal beam front section reinforcement plate, 103. Longitudinal beam middle section outer reinforcement plate, 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. First intermediate crossbeam lower connector, 117. First intermediate crossbeam upper connector, 118. First longitudinal beam connecting plate, 119. First intermediate crossbeam connecting plate, 120. Second intermediate crossbeam connecting member, 121. Second intermediate crossbeam, 122. First upper crossbeam, 123. First upper crossbeam connecting member, 124. Second upper crossbeam, 125. Second upper crossbeam reinforcement block, 126. Second upper crossbeam connecting member, 127. Fourth upper crossbeam, 128. Fourth upper crossbeam reinforcement block, 129. Fifth upper crossbeam, 130. Third intermediate crossbeam, 131. Third intermediate crossbeam upper connecting member, 132. Third intermediate crossbeam lower connecting member, 133. Connector upper top wall, 134. Connector side wall, 135. Inclined portion, 136. Flat plate connecting portion, 137. Inner reinforcement plate of the longitudinal beam midsection; 200. Split crossbeam module, 201. Lower crossbeam U-shaped beam, 202. Lower crossbeam middle beam, 203. Connecting corner block, 204. First gas cylinder clamp, 205. Lower crossbeam bottom edge, 206. Lower crossbeam first edge, 207. Lower crossbeam second edge, 208. Gas cylinder spacer; 300. Hydrogen energy integrated module, 301. Side gas cylinder bracket, 302. Gas cylinder bracket middle crossbeam, 303. Second gas cylinder clamp; 400. Guardrail; 500. Hydrogen storage cylinder. DETAILED DESCRIPTION

[0028] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0029] In the present invention, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0030] like Figures 1 to 13 As shown, a split-beam aluminum alloy frame for heavy trucks is made entirely of aluminum alloy, replacing steel with aluminum to achieve the technical requirements of lightweight and structural stability. The frame comprises a main frame module 100, comprising 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, and a third intermediate crossbeam assembly 111, as well as longitudinal beam front reinforcement plates 102 and longitudinal beam midsection outer reinforcement plates 103 disposed on the longitudinal beams 101.

[0031] Each of the longitudinal beams 101 is a U-shaped trough structure, comprising two sets of parallel upper and lower walls, and sidewalls connecting the upper and lower walls, thereby forming a U-shaped trough with an opening. The two sets of longitudinal beams 101 are arranged with their openings facing each other, i.e., the opening of one set of longitudinal beams 101 faces the opening of the other set of longitudinal beams 101. The sidewalls of the two sets of longitudinal beams 101 correspond to each other. The sidewalls of the longitudinal beams 101 are uniformly arrayed with a plurality of weight-reducing holes to reduce the overall weight of the longitudinal beams 101.

[0032] The longitudinal beam front section reinforcement plate 102 is arranged 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 cross beam assembly 104 and the longitudinal beam 101, and is used to strengthen the structural strength of the front section of the longitudinal beam 101. The "outer surface" specifically refers to the end surface of the side wall of the longitudinal beam 101 facing away from the first intermediate cross beam assembly 104.

[0033] The longitudinal beam middle section outer reinforcement plate 103 is provided on the outer surface of the side wall of the longitudinal beam 101 to strengthen the structural strength of the connection position between the longitudinal beam 101 and the vehicle body suspension.

[0034] The first middle crossbeam assembly 104, the second middle crossbeam assembly 105, the third middle crossbeam assembly 111, the first upper crossbeam assembly 106, the second upper crossbeam assembly 107, the third upper crossbeam assembly 108, the longitudinal beam front section reinforcement plate 102, the longitudinal beam middle section outer reinforcement plate 103, and the longitudinal beam middle section inner reinforcement plate 137 are all connected to the longitudinal beam 101 by screwing, replacing the traditional steel frame with welding, avoiding the technical problems of reduced frame dimensional accuracy and reduced stability due to welding thermal deformation, and at the same time having the technical effect of facilitating assembly and disassembly and improving maintainability.

[0035] The longitudinal beam 101, the first middle cross beam assembly 104, the second middle cross beam assembly 105, the third middle cross beam assembly 111, the first upper cross beam assembly 106, the second upper cross beam assembly 107, the third upper cross beam assembly 108, the longitudinal beam front section reinforcement plate 102, and the longitudinal beam middle section outer side reinforcement plate 103 are all made of aluminum alloy.

[0036] 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, the various connecting parts are connected by screwing. Since the thermal expansion coefficient of aluminum alloy is larger than that of steel, if welding is used, large welding thermal deformation is bound to occur. The use of screwing avoids the occurrence of technical problems of welding thermal deformation and improves assembly efficiency. The front section reinforcement plate 102 of the longitudinal beam and the outer side reinforcement plate 103 of the middle section of the longitudinal beam are arranged at the position where the frame is subjected to greater stress, so as to further improve the overall structural strength of the longitudinal beam 101 made of aluminum alloy.

[0037] As a preferred technical solution of the present invention, the longitudinal beam front section reinforcement plate 102 includes an upper fixed plate 112, a lower fixed plate 113, and a connecting plate 114. The upper fixed plate 112 and the lower fixed plate 113 have the same structure, and the middle part is provided with a weight-reducing through hole opened along the length direction. The upper fixed plate 112 and the lower fixed plate 113 are connected by the connecting plate 114, so that the cross-section of the longitudinal beam front section reinforcement plate 102 is an overall "concave" shape structure.

[0038] The first intermediate crossbeam assembly 104 includes a first intermediate crossbeam 115 , a first intermediate crossbeam lower connecting member 116 , and a first intermediate crossbeam upper connecting member 117 ; The first intermediate cross beam 115 is a trough structure with a U-shaped cross section, and the opening direction of the trough is toward the rear side. A weight-reducing through hole is opened on the surface of the first intermediate cross beam 115. The upper end of the first intermediate cross beam 115 is connected to the longitudinal beam 101 through the first intermediate cross beam upper connecting piece 117, and the lower end of the first intermediate cross beam 115 is connected to the longitudinal beam 101 through the first intermediate cross beam lower connecting piece 116.

[0039] The first intermediate cross-beam upper connector 117 and the first intermediate cross-beam lower connector 116 have the same structure, are symmetrically arranged vertically, and are both located within the U-shaped channel of the longitudinal beam 101. Each includes a first longitudinal beam connecting plate 118 and a first intermediate cross-beam connecting plate 119. The first longitudinal beam connecting plate 118 is a long, straight plate-shaped structure. The first longitudinal beam connecting plate 118 is bolted to the side wall of the longitudinal beam 101 and the upper fixing plate 112 and lower fixing plate 113 of the longitudinal beam front reinforcement plate 102 using a set of bolts. This reduces the number of bolts used and reduces weight while ensuring connection stability and improving assembly efficiency.

[0040] Specifically, the first middle cross beam upper connecting piece 117 is connected to the side wall of the longitudinal beam 101 and the upper fixing plate 112 of the longitudinal beam front section reinforcement plate 102 using bolts, and the first middle cross lower connecting piece 116 is connected to the side wall of the longitudinal beam 101 and the lower fixing plate 113 of the longitudinal beam front section reinforcement plate 102 using bolts.

[0041] One end of the first intermediate cross-beam connecting plate 119 is connected to the first longitudinal beam connecting plate 118, and the first intermediate cross-beam connecting plate 119 is screwed to the upper top wall and lower bottom wall of the longitudinal beam 101. The other end of the first intermediate cross-beam connecting plate 119 extends toward the end of the first intermediate cross-beam 115 and is screwed to the end of the first intermediate cross-beam 115. The width of the first intermediate cross-beam connecting plate 119 gradually narrows as it extends toward the first intermediate cross-beam 115.

[0042] The length of the first longitudinal beam connecting plate 118 of the first intermediate cross-beam upper connector 117 or the first intermediate cross-beam lower connector 116 is greater than the width of the first intermediate cross-beam 115. This increases the contact area between the first longitudinal beam connecting plate 118 and the longitudinal beam 101, improving connection stability. The width of the end of the first intermediate cross-beam connecting plate 119 where it connects to the first longitudinal beam connecting plate 118 is the same as the length of the first longitudinal beam connecting plate 118, giving the first intermediate cross-beam connecting plate 119 an overall triangular structure and reducing its weight.

[0043] The length of the first longitudinal beam connecting plate 118 specifically refers to the length along the longitudinal beam 101, and the width of the first intermediate crossbeam 115 specifically refers to the length along the longitudinal beam 101. The first intermediate crossbeam 115, the first intermediate crossbeam upper connector 117, and the first intermediate crossbeam lower connector 116 are all made of extruded aluminum alloy.

[0044] Through the connection structure design of the first intermediate cross beam 115 and the first intermediate cross beam upper connecting member 117, the lower connecting member and the longitudinal beam 101, and the longitudinal beam front reinforcement plate 102, it is possible to ensure that the weight is greatly reduced. At the same time, the first intermediate cross beam assembly 104 can be connected to the upper top wall, side wall, and lower bottom wall of the longitudinal beam 101 at the same time, thereby improving the structural stability of the connection between the first intermediate cross beam assembly 104 and the longitudinal beam 101.

[0045] As a preferred technical solution of the present invention, 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 cross-section of the second intermediate crossbeam connector 120 is a U-shaped trough structure. The side walls of the second intermediate crossbeam connector 120 are screwed to the side walls of the longitudinal beam 101. The end of the second intermediate crossbeam 121 is inserted into the trough of the second intermediate crossbeam connector 120, and 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.

[0046] The side wall length of the second middle cross beam connector 120 is greater than the width of the second middle cross beam 121 , and the width of the upper wall of the second middle cross beam connector 120 gradually narrows along the extension direction of the upper wall of the second middle cross beam connector 120 toward the second middle cross beam 121 .

[0047] The side wall length of the second intermediate cross beam connector 120 specifically refers to the length along the length direction of the longitudinal beam 101 , and the upper top wall width of the second intermediate cross beam connector 120 specifically refers to the length along the length direction of the longitudinal beam 101 .

[0048] Since there is no reinforcement plate on the longitudinal beam 101 outside the second intermediate beam 121, the second intermediate beam connector 120 is provided as a whole to ensure structural strength. The second intermediate beam 121 and the second intermediate beam connector 120 are both made of aluminum alloy using a practical extrusion process.

[0049] As a preferred technical solution of the present invention, 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 arranged on the outer surface of the side wall of the longitudinal beam 101 and 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-like structure, and an upward bent protrusion is provided in the middle thereof to improve the overall structural stability of the first upper crossbeam 122. The first upper crossbeam 122 is arranged 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. The upper end face of the second side of the first upper crossbeam connector 123 is on the same plane as the upper end face of the upper top wall of the longitudinal beam 101.

[0050] 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 .

[0051] As a preferred technical solution of the present invention, the second upper crossbeam assembly 107 includes a second upper crossbeam 124, a second upper crossbeam reinforcement 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 reinforcement block 125 is a square block structure with a weight-reducing through hole in the center. The second upper crossbeam reinforcement block 125 is disposed within the square tube of the second upper crossbeam 124 and is located at the end. The outer surface of the second upper crossbeam reinforcement block 125 is aligned with the inner surface of the second upper crossbeam 124. The second upper crossbeam reinforcement block 125 is initially connected and positioned to the second upper crossbeam 124 by plug welding.

[0052] The second upper cross-beam connector 126 is provided on the outer surface of the side wall of the longitudinal beam 101. It has an L-shaped structure, with the first side of the second upper cross-beam connector 126 being screwed to the side wall of the longitudinal beam 101. The upper end surface of the second side of the second upper cross-beam connector 126 is coplanar with the upper end surface of the upper top wall of the longitudinal beam 101. A connector reinforcement rib is provided between the first and second sides of the second upper cross-beam connector 126 to increase the load it can carry.

[0053] The second upper cross beam 124 is disposed at the upper end of the longitudinal beam 101 , and bolts penetrate the end sidewall of the second upper cross beam 124 , the second upper cross beam reinforcement block 125 and the second side of the second upper cross beam connector 126 to securely connect the three.

[0054] The structural design of the second upper crossbeam reinforcement block 125 improves the connection strength between the second upper crossbeam 124 and the second upper crossbeam connector 126, while also preventing deformation caused by excessive force 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, the use of the second upper crossbeam reinforcement block 125 reduces the weight of the second upper crossbeam 124 while maintaining structural stability.

[0055] The third upper crossbeam assembly 108 has the same structure as the second upper crossbeam assembly 107 .

[0056] As a preferred technical solution of the present invention, the cross-section of the outer reinforcing plate 103 of the middle section of the longitudinal beam is an L-shaped structure, the first side of which is screwed to the side wall of the longitudinal beam 101, and the plane where the upper end face of the second side is located is on the same plane as the plane where the upper end face of the upper top wall of the longitudinal beam 101 is located.

[0057] The fourth upper crossbeam assembly 109 includes a fourth upper crossbeam 127 and a fourth upper crossbeam reinforcement block 128. The fourth upper crossbeam 127 is a square tube structure manufactured using an aluminum alloy extrusion process. The fourth upper crossbeam reinforcement block 128 is a square block structure with a weight-reducing through-hole in the center. The fourth upper crossbeam reinforcement block 128 is disposed within the square tube of the fourth upper crossbeam 127 and is located at the end. The outer surface of the fourth upper crossbeam reinforcement block 128 aligns with the inner surface of the fourth upper crossbeam 127. The fourth upper crossbeam 127 is disposed at the upper end of the longitudinal beam 101. Bolts penetrate the end sidewall of the fourth upper crossbeam 127, the fourth upper crossbeam reinforcement block 128, and the second side of the longitudinal beam mid-section outer reinforcement plate 103 to securely connect the three. The width of the fourth upper crossbeam 127 is wider than that of the second and third upper crossbeams, thereby enhancing the structural strength of the fourth upper crossbeam 127.

[0058] The fifth upper crossbeam assembly 110 includes a fifth upper crossbeam 129. The fifth upper crossbeam 129 is a plate-like structure with an upwardly curved protrusion at its center to enhance its structural strength. The fifth upper crossbeam 129 is mounted on the upper end of the longitudinal beam 101, and its end is bolted to the second side of the longitudinal beam midsection outer reinforcement plate 103.

[0059] 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 connecting the fourth upper cross beam assembly 109 and the fifth upper cross beam assembly 110 to the longitudinal beam 101, replacing the solution of setting up additional new connectors, reducing the number of connectors used, and further improving the overall weight of the frame.

[0060] As a preferred technical solution of the present invention, the third middle crossbeam assembly 111 includes a third middle crossbeam 130 , a third middle crossbeam upper connecting member 131 , and a third middle crossbeam lower connecting member 132 .

[0061] A cutting portion is provided at one end of the longitudinal beam 101 away from the first intermediate cross beam assembly 104 . The cutting portion is formed by cutting the upper top wall of the longitudinal beam 101 from the middle of the side wall toward obliquely upwards at the end of the longitudinal beam 101 .

[0062] The third intermediate cross beam upper connector 131 includes a connector upper top wall 133 and a connector side wall 134 . The connector upper top wall 133 is disposed at the upper end of the connector side wall 134 .

[0063] The connecting member upper top wall 133 includes an inclined portion 135 and a flat connecting portion 136 .

[0064] The inclined portion 135 of the upper top wall 133 of the connector is an upwardly inclined plate-like structure, with an angle of inclination that is the same as the cutting angle of the cutting portion of the longitudinal beam 101. The flat connecting portion 136 is provided at the front end of the inclined portion 135 and is arranged parallel to the upper top wall of the longitudinal beam 101. The flat 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.

[0065] The third intermediate crossbeam 130 is a U-shaped trough structure with its opening facing toward the first intermediate crossbeam 115. Weight-reducing holes are provided on the sidewalls of the third intermediate crossbeam 130. The upper wall of the third intermediate crossbeam 130 is tilted so that it is parallel to the inclined portion 135 of the upper wall 133 of the connector. The upper wall of the third intermediate crossbeam 130 is screwed to the inclined portion 135 of the upper wall 133 of the connector.

[0066] The side wall of the third cross beam connector is screwed to the side wall of the longitudinal beam 101 .

[0067] The third intermediate crossbeam lower connecting member 132 is an L-shaped structure. The first side of the third intermediate crossbeam lower connecting member 132 is screwed to the side wall of the longitudinal beam 101, and the second side of the third intermediate crossbeam lower connecting member 132 is screwed to the lower bottom wall of the third intermediate crossbeam 130, so that the third intermediate crossbeam assembly 111 can be connected to the upper top wall, side wall, and lower 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.

[0068] As a preferred technical solution of the present invention, a split beam module 200 is also included.

[0069] The split 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 formed by bending an aluminum alloy square tube. With its opening facing upward, it includes a lower crossbeam bottom edge 205, a lower crossbeam first edge 206, and a lower crossbeam second edge 207. The lower portions of the lower crossbeam first edge 206 and the lower crossbeam second edge 207 are connected to the lower crossbeam bottom edge 205, forming the U-shaped lower crossbeam U-shaped beam 201. The lower crossbeam first edge 206 is screwed to the outer side surface of the side wall of one set of longitudinal beams 101, while the lower crossbeam second edge 207 is screwed to the outer side surface of the side wall of the other set of longitudinal beams 101, thereby connecting the lower crossbeam U-shaped beam 201 to the longitudinal beams 101. The lower crossbeam middle beam 202 is transversely disposed within the opening of the lower crossbeam U-shaped beam 201. The connecting angle block 203 is disposed at the end of the lower crossbeam middle beam 202. The connecting angle block 203 is L-shaped, and a reinforcing rib is provided between the first and second sides of the connecting angle block 203. The first side of the connecting angle block 203 is screwed to the first side 206 of the lower crossbeam / the second side 207 of the lower crossbeam, and the second side of the connecting angle block 203 is transversely screwed to the lower crossbeam middle beam 202, thereby connecting the lower crossbeam middle beam 202 to the lower crossbeam U-shaped beam 201.

[0070] A first gas cylinder clamp 204 is provided on the bottom edge 205 of the lower crossbeam U-shaped beam 201 and on the lower crossbeam middle beam 202 for clamping the hydrogen storage cylinder 500. A gas cylinder spacer 208 is also provided between the hydrogen storage cylinder 500 and the lower crossbeam / lower crossbeam middle beam 202 of the lower crossbeam U-shaped beam 201. The gas cylinder spacer 208 is made of rubber and provides a shock-absorbing function.

[0071] Two sets of split cross-beam modules 200 are provided: a first set of split cross-beam modules 200 is disposed between the first upper cross-beam assembly 106 and the second upper cross-beam assembly 107, and a second set of split cross-beam modules 200 is disposed between the third upper cross-beam assembly 108 and the fourth upper cross-beam assembly 109. The two sets of split cross-beam modules 200 clamp the front portion of the hydrogen storage cylinder 500. Because a suspension is provided at the rear of the vehicle frame, the hydrogen storage cylinder 500, located above the suspension, is supported by the suspension.

[0072] Due to the space limitation of the crossbeams, the traditional steel heavy truck frame can only install the gas cylinder on the side of the frame. Compared with the traditional steel heavy truck, the present invention arranges 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 at the upper end of the longitudinal beam 101. While ensuring the stability of the structure, the hydrogen storage cylinder 500 can be located between the two sets of longitudinal beams 101, providing space for the installation of the hydrogen storage cylinder 500. When the heavy truck rolls over, the gas cylinder located between the two sets of longitudinal beams 101 is prevented from being directly impacted, thereby improving safety performance. At the same time, the center of gravity position of the whole vehicle can be optimized, the center of gravity is laterally centered, and the risk of rollover is reduced. At the same time, the impact of the center of gravity transfer during dynamic driving can be reduced, thereby improving the maneuverability of the whole vehicle. The two sets of longitudinal beams 101 are the main load-bearing components of the frame. Installing the gas cylinder in the middle area of the two sets of longitudinal beams 101 can evenly transfer the weight to the left and right longitudinal beams 101 through the crossbeam, avoiding excessive load on one side of the longitudinal beam 101.

[0073] Specifically, two groups of first gas cylinder clamps 204 are provided on the bottom edge 205 of the lower crossbeam U-shaped beam 201 , and two groups of first gas cylinder clamps 204 are provided on the middle beam 202 of the lower crossbeam.

[0074] Except for the first gas cylinder clamp 204 , the rest of the split beam module 200 is made of aluminum alloy.

[0075] As a preferred technical solution of the present invention, it also includes a hydrogen energy integration module 300 and a guardrail 400.

[0076] The hydrogen energy integrated module 300 includes a side gas cylinder bracket 301, a gas cylinder bracket intermediate crossbeam 302, and a second gas cylinder clamp 303. The upper portion of the side gas cylinder bracket 301 is screwed to the outer surface of the side wall of the longitudinal beam 101. The side gas cylinder bracket 301 is provided with a transverse gas cylinder bracket intermediate crossbeam 302 in the middle portion, so that the side gas cylinder bracket 301 and the gas cylinder bracket intermediate crossbeam 302 form a T-shaped structure. The second gas cylinder clamp 303 is provided in the area between the upper end surface of the gas cylinder bracket intermediate crossbeam 302 and the side gas cylinder bracket 301, and in the area between the lower end surface of the gas cylinder bracket intermediate crossbeam 302 and the side gas 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 installed 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 installed 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 clamp two hydrogen storage cylinders 500. The guardrail 400 is connected to the intermediate crossbeam 302 of the cylinder brackets of the two sets of hydrogen energy integrated modules 300.

[0077] like Figure 2As shown, through the above design, a small gas cylinder can be hung on the side of the longitudinal beam 101 of the 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 hung on the side when the heavy truck rolls over or collides.

[0078] As a preferred technical solution of the present invention, it also includes an inner reinforcing plate 137 in the middle section of the longitudinal beam, whose cross-section is a U-shaped trough structure, which is arranged 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 strengthen the structural strength of the longitudinal beam 101.

[0079] In summary, the present invention uses aluminum alloy materials to manufacture heavy-duty truck frames, and utilizes its low density characteristics to reduce weight by 32% compared with steel frames of the same tonnage, corresponding to a 19% reduction in vehicle energy consumption; the self-passivation and corrosion resistance of aluminum alloy enables the frame to maintain structural integrity in harsh environments; at the same time, the excellent forming performance of aluminum alloy can realize integrated structural design and reduce welding defects; during a collision, the controllable deformation characteristics of aluminum alloy greatly improve energy absorption efficiency and ensure driving safety.

[0080] Each crossbeam assembly and longitudinal beam 101 are connected with high-strength bolts + anti-loosening nuts. Compared with traditional welding processes, this reduces thermal deformation defects and increases connection strength by 25%.

[0081] 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 vehicle frame are used to bear horizontal loads (such as lateral forces when the vehicle turns).

[0082] The split 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 local overload.

[0083] Different from the segmented welding structure of the existing aluminum alloy frame, the present invention reduces the number of welds by 70% and improves fatigue strength by 40% by integrally extruding the longitudinal beam 101.

[0084] Meeting the special requirements of hydrogen energy systems: For hydrogen energy heavy-duty transport vehicles, the scientific layout and reliable fixation of components such as hydrogen storage tanks in the hydrogen energy system are achieved, the vehicle center of gravity distribution is optimized, and driving stability is improved; at the same time, the structural design meets the safety issues of hydrogen energy systems such as shockproof and leakproof.

[0085] The above description is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, can make equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A split crossbeam aluminum alloy frame for heavy trucks, characterized in that: The vehicle comprises a main frame module (100), wherein the main frame module (100) comprises two sets of longitudinal beams (101) arranged relatively parallel and spaced apart, a first intermediate crossbeam assembly (104) arranged between the two sets of longitudinal beams (101) and arranged in sequence from front to back, 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 longitudinal beam front section reinforcement plate (102) and a longitudinal beam middle section outer side reinforcement plate (103) arranged on the longitudinal beam (101); The two groups of longitudinal beams (101) are both trough structures with a U-shaped cross section, and a plurality of groups of weight-reducing holes are evenly arrayed on the side walls of the longitudinal beams (101); The longitudinal beam front section reinforcement plate (102) is arranged 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 cross beam assembly (104) and the longitudinal beam (101); the longitudinal beam middle section outer reinforcement plate (103) is arranged 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 longitudinal beam front section reinforcement plate (102), the longitudinal beam middle section outer reinforcement plate (103), and the longitudinal beam middle section inner reinforcement plate (137) are all connected to the longitudinal beam (101) by screw connection; 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 longitudinal beam front section reinforcement plate (102), and the longitudinal beam middle section outer side reinforcement plate (103) are all made of aluminum alloy.

2. The split crossbeam aluminum alloy frame for heavy trucks according to claim 1, characterized in that: The longitudinal beam front section reinforcement plate (102) comprises 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 via the connecting plate (114); The first intermediate crossbeam assembly (104) includes a first intermediate crossbeam (115), a first intermediate crossbeam lower connecting member (116), and a first intermediate crossbeam upper connecting member (117); The first intermediate crossbeam (115) is a trough structure with a U-shaped cross section, the opening direction of the trough is toward the rear side, a weight-reducing through hole is opened on the surface of the first intermediate crossbeam (115), the upper end of the first intermediate crossbeam (115) is connected to the longitudinal beam (101) through the first intermediate crossbeam upper connecting piece (117), and the lower end of the first intermediate crossbeam (115) is connected to the longitudinal beam (101) through the first intermediate crossbeam lower connecting piece (116); The first intermediate cross beam upper connecting member (117) and the first intermediate cross beam lower connecting member (116) have the same structure, are symmetrically arranged up and down, and are both located in the U-shaped groove body of the longitudinal beam (101). Both include a first longitudinal beam connecting plate (118) and a first intermediate cross beam connecting plate (119). The first longitudinal beam connecting plate (118) is a long straight plate structure. The first longitudinal beam connecting plate (118) and the side wall of the longitudinal beam (101) and the upper fixing plate (112) / lower fixing plate (113) of the longitudinal beam front section reinforcement plate (102) are screwed together by a group 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 crossbeam aluminum alloy frame for heavy trucks according to claim 1, characterized in that: The second intermediate crossbeam assembly (105) comprises a second intermediate crossbeam connector (120) and a second intermediate crossbeam (121); The second intermediate cross beam (121) is a trough structure with a U-shaped cross section, the opening direction of the trough is toward the rear side, the second intermediate cross beam connecting member (120) is a trough structure with a U-shaped cross section, the side wall of the second intermediate cross beam connecting member (120) is screwed to the side wall of the longitudinal beam (101), the end of the second intermediate cross beam (121) is inserted into the trough of the second intermediate cross beam connecting member (120), and the upper top wall of the second intermediate cross beam connecting member (120) is screwed to the upper top wall of the second intermediate cross beam (121), and the lower bottom wall of the second intermediate cross beam connecting member (120) is screwed to the lower bottom wall of the second intermediate cross beam (121); The side wall length of the second intermediate crossbeam connecting member (120) is greater than the width of the second intermediate crossbeam (121), and the width of the upper top wall of the second intermediate crossbeam connecting member (120) gradually narrows along the extension direction of the upper top wall of the second intermediate crossbeam connecting member (120) toward the second intermediate crossbeam (121).

4. The split 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 connecting member (123); the first upper crossbeam connecting member (123) is arranged on the outer surface of the side wall of the longitudinal beam (101), and is an L-shaped structure. The first side of the first upper crossbeam connecting member (123) is screwed to the side wall of the longitudinal beam (101); the first upper crossbeam (122) is a plate-like structure, and an upward bending protrusion is provided in the middle thereof. The first upper crossbeam (122) is arranged 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 connecting member (123).

5. The split crossbeam aluminum alloy frame 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 reinforcement block (125), and a second upper crossbeam connector (126); the second upper crossbeam (124) is a square tube structure, the second upper crossbeam reinforcement block (125) is a square block structure, a weight-reducing through hole is provided in the middle thereof, the second upper crossbeam reinforcement block (125) is arranged in the square tube of the second upper crossbeam (124) and is located at the end position, and the outer surface of the second upper crossbeam reinforcement block (125) is in contact with the inner surface of the second upper crossbeam (124); The second upper cross beam connector (126) is provided on the outer surface of the side wall of the longitudinal beam (101) and is an L-shaped structure. The first side of the second upper cross beam connector (126) is screwed to the side wall of the longitudinal beam (101), and the upper end surface of the second side of the second upper cross beam connector (126) and the upper end surface of the upper top wall of the longitudinal beam (101) are located on the same plane. A connector reinforcement rib is provided between the first side and the second side of the second upper cross beam connector (126); The second upper crossbeam (124) is arranged at the upper end of the longitudinal beam (101), and the bolts penetrate the end side wall of the second upper crossbeam (124), the second upper crossbeam reinforcement block (125), and the second side of the second upper crossbeam connector (126), thereby fixing the three together; The third upper crossbeam assembly (108) has the same structure as the second upper crossbeam assembly (107).

6. The split cross-beam aluminum alloy frame for heavy trucks according to claim 1, characterized in that: The cross section of the outer reinforcement plate (103) of the middle section of the longitudinal beam is an L-shaped structure, wherein the first side thereof is screwed to the side wall of the longitudinal beam (101), and the plane where the upper end face of the second side is located is coplanar with the plane where the upper end face of the upper top wall of the longitudinal beam (101) is located; The fourth upper crossbeam assembly (109) includes a fourth upper crossbeam (127) and a fourth upper crossbeam reinforcement block (128); the fourth upper crossbeam (127) is a square tube structure, the fourth upper crossbeam reinforcement block (128) is a square block structure, and a weight-reducing through hole is provided in the middle thereof; the fourth upper crossbeam reinforcement block (128) is arranged in the square tube of the fourth upper crossbeam (127) and is located at the end position; the outer surface of the fourth upper crossbeam reinforcement block (128) is fitted with the inner surface of the fourth upper crossbeam (127); the fourth upper crossbeam (127) is arranged at the upper end of the longitudinal beam (101); bolts penetrate the end side wall of the fourth upper crossbeam (127), the fourth upper crossbeam reinforcement block (128) and the second side of the outer reinforcement plate (103) of the middle section of the longitudinal beam to 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 provided at its center. The fifth upper crossbeam (129) is arranged at the upper end of the longitudinal beam (101), and the end of the fifth upper crossbeam (129) is screwed to the second side of the outer reinforcing plate (103) of the middle section of the longitudinal beam through bolts.

7. The split cross-beam aluminum alloy frame for heavy trucks according to claim 1, characterized in that: The third middle crossbeam assembly (111) includes a third middle crossbeam (130), a third middle crossbeam upper connecting piece (131), and a third middle crossbeam lower connecting piece (132); A cutting portion is provided at one end of the longitudinal beam (101) away from the first intermediate cross beam assembly (104), wherein the cutting portion is formed by cutting the upper top wall of the longitudinal beam (101) from the middle of the side wall toward obliquely upwards at the end position of the longitudinal beam (101); The third intermediate crossbeam upper connecting member (131) includes a connecting member upper top wall (133) and a connecting member side wall (134). The connecting member upper top wall (133) is arranged at the upper end of the connecting member side wall (134). The connecting member upper top wall (133) includes an inclined portion (135) and a flat plate connecting portion (136). The inclined portion (135) is an upwardly inclined plate-shaped 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 arranged at the front end of the inclined portion (135). 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). The third intermediate crossbeam (130) is a trough structure with a U-shaped cross section. A weight-reducing hole is provided on the side wall of the third intermediate crossbeam (130). The upper top wall of the third intermediate crossbeam (130) is arranged obliquely 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 connecting member. The upper top wall of the third intermediate crossbeam (130) is screwed to the inclined portion (135) of the upper top wall (133) of the connecting member. The side wall of the third crossbeam lower connecting member is screwed to the side wall of the longitudinal beam (101); the third intermediate crossbeam lower connecting member (132) is an L-shaped structure; the first side of the third intermediate crossbeam lower connecting member (132) is screwed to the side wall of the longitudinal beam (101); and the second side of the third intermediate crossbeam lower connecting member (132) is screwed to the lower bottom wall of the third intermediate crossbeam (130).

8. The split cross-beam aluminum alloy frame for heavy trucks according to claim 1, characterized in that: Also included is a split beam module (200); The split crossbeam module (200) comprises 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 an aluminum alloy square tube structure by a bending process. The opening side thereof upward comprises a lower crossbeam bottom edge (205), a lower crossbeam first edge (206), and a lower crossbeam second edge (207). The lower portions of the lower crossbeam first edge (206) and the lower crossbeam second edge (207) are connected to the lower crossbeam bottom edge (205) to form a U-shaped lower crossbeam U-shaped beam (201). The lower crossbeam first edge (206) is screwed to the outer side surface of the side wall of one group of longitudinal beams (101), and the lower crossbeam second edge (207) is screwed to the outer side surface of the side wall of another group of longitudinal beams (101). The lower crossbeam middle beam (202) is transversely arranged in the opening of the lower crossbeam U-shaped beam (201), and is made of aluminum alloy. The connecting angle block (203) is arranged at the end position of the lower crossbeam middle beam (202). The connecting angle block (203) is L-shaped. A reinforcing rib is provided between the first side and the second side of the connecting angle block (203). The first side of the connecting angle block (203) is screwed to the first side (206) of the lower crossbeam / the second side (207) of the lower crossbeam, and the second side of the connecting angle block (203) is transversely screwed to the lower crossbeam middle beam (202); A first gas cylinder clamp (204) is provided on the bottom edge (205) of the lower crossbeam U-shaped beam (201) and on the middle beam (202) of the lower crossbeam; The split beam modules (200) are provided in two groups, the first group of split beam modules (200) being located between the first upper beam assembly (106) and the second upper beam assembly (107), and the second group of split beam modules (200) being located between the third upper beam assembly (108) and the fourth upper beam assembly (109).

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

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

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