Lightweight light truck frame assembly

Abstract

The invention discloses a light truck frame assembly and relates to the technical field of light trucks, the light truck frame assembly comprises a frame mechanism, a reinforcing mechanism comprises two U-shaped plates and two auxiliary holes, arc-shaped plates are fixed to the top of the inner wall of each U-shaped plate and between the top of the inner wall of each U-shaped plate, a long rod is arranged between the inner surfaces of each U-shaped plate, and the long rods are connected with the U-shaped plates. The outer surface of each long rod is provided with a plurality of auxiliary blocks, springs are fixed to the top and the bottom of the inner wall of each U-shaped plate, the top and the bottom of the inner wall of each U-shaped plate movably penetrate through a T-shaped rod, and a round head rod is arranged in each spring. The strength consumption of the light-weight light truck frame assembly on complex loads can be increased, so that the overall strength of the frame is improved, and the use efficiency of the frame is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lightweight light truck, in particular to a lightweight light truck frame assembly. BACKGROUND

[0002] The lightweight light truck is a vehicle which reduces the overall weight of the vehicle under the premise of ensuring the core performance such as load bearing capacity and safety, wherein the frame assembly is the core load bearing component of the lightweight light truck and is the "skeleton" supporting all vehicle parts and transferring load.

[0003] The core target of the existing lightweight light truck frame assembly is to greatly reduce the weight while ensuring to meet the core performance requirements such as vehicle load bearing and torsion resistance, but with the application of lightweight materials and the reduction of the self-weight of the frame, it will be difficult to completely offset the complex load of the lightweight truck frame during driving by simply relying on the material performance, and the complex load includes bending, torsion, impact and other working conditions, therefore, it is necessary to increase the reinforcing structure to make up for the performance gap of the frame assembly, so as to ensure the overall strength of the frame.

[0004] Therefore, we propose a new lightweight light truck frame assembly to solve the problems raised in the above background technology. SUMMARY

[0005] The present application aims to provide a lightweight light truck frame assembly, which can increase the strength consumption of the lightweight light truck frame assembly to complex load by setting the reinforcing mechanism, thereby improving the overall strength of the frame and further improving the use efficiency of the frame, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a lightweight light truck frame assembly, comprising a frame mechanism, the frame mechanism comprising two longitudinal beams, and a reinforcing mechanism is arranged on the frame mechanism; The reinforcing mechanism comprises two groups of U-shaped plates and two groups of auxiliary holes, the inner wall top and the inner wall top between each U-shaped plate are fixed with an arc-shaped plate, the outer surface of each U-shaped plate in each group is provided with a connecting block, the inner surfaces of each group of U-shaped plates are provided with a long rod, the outer surface of each long rod is provided with a plurality of auxiliary blocks, the inner wall top and the inner wall bottom of each U-shaped plate are fixed with a spring, the inner wall top and the inner wall bottom of each U-shaped plate are movably penetrated with a T-shaped rod, the surface of each connecting block is movably penetrated with a hand screw, and the inside of each spring is provided with a round head rod.

[0007] Preferably, the outer arc surface of each of the arc-shaped plates is in contact with the inner surface of each of the U-shaped plates, the threaded end of each of the hand screws is screwed to the outer surface of the corresponding U-shaped plate, each of the connecting blocks is fixed to one end of each of the long rods, each of the round plates is distributed inside each of the auxiliary holes, and the outer surface of each of the round plates is in contact with the inner wall of each of the auxiliary holes.

[0008] Preferably, the hand screws are used to fix the connecting blocks to the U-shaped plates, the two ends of the auxiliary blocks are pointed and smooth, the head surface of each of the round head rods is in contact with the surface of the corresponding auxiliary block, and one end of each of the springs is fixed to the surface of the corresponding round head rod.

[0009] Preferably, each of the round head rods is fixed to each of the T-shaped rods, each of the T-shaped rods is inside each of the springs, each of the long rods is between the inside of each of the auxiliary holes, and the middle section of the auxiliary block has the same diameter as the inside diameter of the auxiliary hole.

[0010] Preferably, the clamping end of each of the T-shaped rods is movably penetrated through the inner surface of the corresponding longitudinal beam, the surface of each of the longitudinal beams is provided with a rear mounting seat near one end, and the surface of each of the longitudinal beams is provided with a front mounting seat near the other end.

[0011] Preferably, the surface of each of the longitudinal beams is additionally provided with a plurality of mounting racks, the inside of each of the longitudinal beams is additionally provided with a rear reinforcing shell near one end, the U-shaped plate, the corresponding rear reinforcing shell and the corresponding longitudinal beam are fixed through the auxiliary block and the T-shaped rod, the clamping end of each of the T-shaped rods is movably penetrated through the inner surface of the corresponding rear reinforcing shell, and the inside of each of the longitudinal beams is additionally provided with a front reinforcing shell near the other end.

[0012] Preferably, the inside of two of the front reinforcing shells is provided with a front cross beam, the surface of the front cross beam is additionally provided with a front baffle, the surface of the front baffle is in contact with the end surface of the two longitudinal beams and the end surface of the two front cross beams, and the inside of two of the rear reinforcing shells is provided with a rear cross beam.

[0013] Preferably, the surface of the rear cross beam is additionally provided with a rear baffle, the surface of the rear baffle is in contact with the end surface of the two longitudinal beams and the end surface of the two rear cross beams, the inside of two of the rear reinforcing shells is provided with a plurality of middle cross beams, and each of the auxiliary holes is preset on the corresponding middle cross beam.

[0014] Preferably, two symmetrical reinforcing strips are fixed to each of the middle cross beams, the two longitudinal beams, the two front reinforcing shells and the front cross beam are installed through bolts and nuts, and the two longitudinal beams, the two rear reinforcing shells and the rear cross beam are installed through bolts and nuts.

[0015] Preferably, the two longitudinal beams, the plurality of middle cross beams and the two rear reinforcing shells are mounted by bolts and nuts, the front mounting seat, the corresponding longitudinal beam and the corresponding rear reinforcing shell are mounted by bolts and nuts, and the rear mounting seat, the corresponding longitudinal beam and the corresponding rear reinforcing shell are mounted by bolts and nuts.

[0016] Compared with the prior art, the present application has the following beneficial effects: 1. In the present application, the reinforcing mechanism is provided to increase the strength consumption of the lightweight light truck frame assembly under complex loads, thereby improving the overall strength of the frame and further improving the use efficiency of the frame. By using the cooperation of the U-shaped plate, the arc-shaped plate, the round head rod and the T-shaped rod, the position movement of the T-shaped rod can be prevented, and the load bearing strength of the frame assembly can be increased. By using the cooperation of the hand-screw, the connecting block, the round plate, the long rod and the auxiliary hole, the position movement of the auxiliary block can be prevented.

[0017] 2. In the present application, the cooperation of the front cross beam, the front baffle and the front reinforcing shell can increase the front end impact resistance of the lightweight light truck frame assembly, and the cooperation of the rear cross beam, the rear baffle and the rear reinforcing shell can increase the rear end impact resistance of the lightweight light truck frame assembly. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a side view angle perspective view of the lightweight light truck frame assembly of the present application; Figure 2 It is a bottom view angle perspective view of the lightweight light truck frame assembly of the present application; Figure 3 It is a top view angle structure schematic view of the lightweight light truck frame assembly of the present application; Figure 4 It is a longitudinal beam, a front reinforcing shell and a rear reinforcing shell of the lightweight light truck frame assembly of the present application; Figure 5 It is a middle cross beam, a reinforcing strip and an auxiliary hole of the lightweight light truck frame assembly of the present application; Figure 6 It is a side view angle partial perspective view of the lightweight light truck frame assembly of the present application; Figure 7 It is a reinforcing mechanism partial cross-sectional perspective view of the lightweight light truck frame assembly of the present application; Figure 8 It is a Figure 1 structure enlarged perspective view of the middle A of the lightweight light truck frame assembly of the present application.

[0019] In the figure: 1, frame mechanism; 101, longitudinal beam; 102, front mounting seat; 103, mounting frame; 104, rear mounting seat; 105, front reinforcing shell; 106, front cross beam; 107, front baffle; 108, rear reinforcing shell; 109, rear cross beam; 110, rear baffle; 111, middle cross beam; 112, reinforcing strip; 2, reinforcing mechanism; 201, U-shaped plate; 202, arc-shaped plate; 203, connecting block; 204, long rod; 205, auxiliary block; 206, round head rod; 207, spring; 208, T-shaped rod; 209, hand screw; 210, auxiliary hole; 211, round plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0021] Embodiment one: please refer to Figures 1-6 and Figure 8As shown, the present application provides a technical solution: a lightweight light truck frame assembly, comprising a frame mechanism 1, the frame mechanism 1 is provided with a reinforcing mechanism 2, the frame mechanism 1 comprises two longitudinal beams 101, the surface of each longitudinal beam 101 is provided with a rear mounting seat 104 near one end position, the surface of each longitudinal beam 101 is provided with a front mounting seat 102 near the other end position, the surface of each longitudinal beam 101 is additionally provided with a plurality of mounting frames 103, the inside of each longitudinal beam 101 is additionally provided with a rear reinforcing shell 108 near one end position, the inside of each longitudinal beam 101 is additionally provided with a front reinforcing shell 105 near the other end position, the inside of two front reinforcing shells 105 is provided with a front cross beam 106, and the front cross beam 106 is provided with a plurality of weight reduction holes, the surface of two front cross beams 106 is additionally provided with a front baffle 107, and the front baffle 107 is also provided with a plurality of weight reduction holes, the surface of the front baffle 107 is in contact with the end surface of the two longitudinal beams 101 and the end surface of the two front cross beams 106, the inside of two rear reinforcing shells 108 is provided with a rear cross beam 109, and the rear cross beam 109 is also provided with a plurality of weight reduction holes, the surface of the rear cross beam 109 is additionally provided with a rear baffle 110, and the rear baffle 110 is also provided with a plurality of weight reduction holes, the surface of the rear baffle 110 is in contact with the end surface of the two longitudinal beams 101 and the end surface of the two rear cross beams 109, a plurality of middle cross beams 111 is arranged between the inside of the two rear reinforcing shells 108, two symmetrical reinforcing strips 112 are fixed on each middle cross beam 111, the two longitudinal beams 101, the two front reinforcing shells 105 and the front cross beam 106 are installed through bolts and nuts, the two longitudinal beams 101, the two rear reinforcing shells 108 and the rear cross beam 109 are installed through bolts and nuts, the two longitudinal beams 101, the plurality of middle cross beams 111 and the two rear reinforcing shells 108 are installed through bolts and nuts, the front mounting seat 102, the corresponding longitudinal beam 101 and the corresponding rear reinforcing shell 108 are installed through bolts and nuts, and the rear mounting seat 104, the corresponding longitudinal beam 101 and the corresponding rear reinforcing shell 108 are installed through bolts and nuts.

[0022] In this embodiment, when the need to assemble the frame mechanism 1, at this time first two longitudinal beams 101 symmetrical placed on the horizontal assembly platform, then first in each longitudinal beam 101 inside one end and the other end are placed on the rear reinforcement shell 108 and the front reinforcement shell 105, and after placing, fine-tune the position, when all the rear reinforcement shell 108 and all the front reinforcement shell 105 are placed, at this time into the two rear reinforcement shell 108 inside the plurality of with reinforcing strip 112 beam 111, and after completing all the beam 111 placement operation, adjust the position of all the beam 111, let these beam 111 in the two rear reinforcement shell 108 inside the equidistant distribution, then use the prepared bolt and nut will be two rear reinforcement shell 108, two longitudinal beams 101 and all the beam 111 fixed together, then in each longitudinal beam 101 are respectively installed front mounting seat 102, rear mounting seat 104 and a plurality of mounting bracket 103, when the reinforcement mechanism 2 complete installation operation on the frame mechanism 1, at this time in the two front reinforcement shell 105 inside between the placement of the front beam 106, then use the prepared bolt and nut will be two longitudinal beams 101, two front reinforcement shell 105 and front beam 106 fixed together, then through the prepared bolt and nut will be front beam 106 and front baffle 107 fixed together, after the two rear reinforcement shell 108 inside between the placement of the rear beam 109, after the rear beam 109 complete placement operation, use the prepared bolt and nut will be rear beam 109, two longitudinal beams 101 and two rear reinforcement shell 108 fixed together, then through the prepared bolt and nut will be rear beam 109 and rear baffle 110 fixed together, can complete the overall lightweight light truck frame assembly.

[0023] Embodiment two: according to Figures 1-8As shown, the frame mechanism 1 is provided with a reinforcing mechanism 2, the reinforcing mechanism 2 comprises two groups of U-shaped plates 201 and two groups of auxiliary holes 210, the inner wall top and the inner wall top between each U-shaped plate 201 are fixed with an arc-shaped plate 202, the outer surface of each U-shaped plate 201 in each group is provided with a connecting block 203, the inner surface between each U-shaped plate 201 in each group is provided with a long rod 204, the outer surface of each long rod 204 is provided with a plurality of auxiliary blocks 205, the inner wall top and the inner wall bottom of each U-shaped plate 201 are fixed with a spring 207, the inner wall top and the inner wall bottom of each U-shaped plate 201 are movably penetrated by a T-shaped rod 208, the surface of each connecting block 203 is movably penetrated by a hand screw 209, the inside of each spring 207 is provided with a round head rod 206, the outer arc surface of each arc-shaped plate 202 is in contact with the inner surface of each U-shaped plate 201, the threaded end of each hand screw 209 is threadedly connected to the outer surface of the corresponding U-shaped plate 201, each connecting block 203 is fixed at one end of each long rod 204, each circular plate 211 is distributed inside each auxiliary hole 210, and the outer surface of each circular plate 211 is in contact with the inner wall of each auxiliary hole 210, the hand screw 209 is used to fix the connecting block 203 on the U-shaped plate 201, the two ends of the auxiliary block 205 are pointed and smooth, the round head surface of each round head rod 206 is in contact with the surface of the corresponding auxiliary block 205, one end of each spring 207 is fixed to the surface of the corresponding round head rod 206, each round head rod 206 is fixed to each T-shaped rod 208, each T-shaped rod 208 is inside each spring 207, each long rod 204 is between the inside of each group of auxiliary holes 210, the middle section diameter of the auxiliary block 205 is the same as the inside diameter of the auxiliary hole 210, the frame mechanism 1 comprises two longitudinal beams 101, the clamping end of each T-shaped rod 208 movably penetrates the inner surface of the corresponding longitudinal beam 101, the inside of each longitudinal beam 101 near one end is additionally provided with a rear reinforcing shell 108, the U-shaped plate 201, the corresponding rear reinforcing shell 108 and the corresponding longitudinal beam 101 are fixed by the auxiliary block 205 and the T-shaped rod 208, the clamping end of each T-shaped rod 208 movably penetrates the inner surface of the corresponding rear reinforcing shell 108, a plurality of middle cross beams 111 are arranged between the interiors of the two rear reinforcing shells 108, and each auxiliary hole 210 is prearranged on the corresponding middle cross beam 111.

[0024] When the reinforcing mechanism 2 needs to be installed on the frame mechanism 1, a plurality of U-shaped plates 201 with arc-shaped plates 202 are placed equidistantly in the interior of each rear reinforcing shell 108, then one of the connecting blocks 203 is used to drive the long rod 204 connected thereto and the plurality of auxiliary blocks 205 and the plurality of circular plates 211 fixed on the long rod 204 to move, the long rod 204 is then passed through the interior of the corresponding set of auxiliary holes 210 of one of the longitudinal beams 101, the auxiliary blocks 205 moving at the same time push all the circular head rods 206 on the path to move, the circular head rods 206 moving at the same time also compress the corresponding springs 207 in cooperation with the corresponding U-shaped plates 201, and the circular head rods 206 moving at the same time also drive the T-shaped rods 208 connected thereto to move, when the long rod 204 completes the movement operation, each circular plate 211 is just inside each auxiliary hole 210, each auxiliary block 205 is just between the corresponding two circular head rods 206, and the clamping end of each T-shaped rod 208 is clamped on the corresponding rear reinforcing shell 108 and the corresponding longitudinal beam 101, then the hand-screwed screws 209 and the connecting block 203 are used to fix the long rod 204 after moving, and the above steps are repeated to move the corresponding long rod 204 of the other connecting block 203 to the corresponding position and fix it.

[0025] The effect and working principle of the whole mechanism are as follows: when assembling, the two longitudinal beams 101 are symmetrically placed on the horizontal assembly platform, then the rear reinforcing shell 108 and the front reinforcing shell 105 are respectively placed at one end and the other end of each longitudinal beam 101, and the positions are adjusted after being placed, when all the rear reinforcing shells 108 and all the front reinforcing shells 105 are placed, a plurality of middle cross beams 111 with reinforcing strips 112 are sequentially placed in the interior of the two rear reinforcing shells 108, after all the middle cross beams 111 are placed, the positions of all the middle cross beams 111 are adjusted to equidistantly distribute the middle cross beams 111 between the two rear reinforcing shells 108, then the prepared bolts and nuts are used to fix the two rear reinforcing shells 108, the two longitudinal beams 101 and all the middle cross beams 111 together, then the front mounting seat 102, the rear mounting seat 104 and the plurality of mounting frames 103 are respectively installed on each longitudinal beam 101; When it is required to install the reinforcing mechanism 2 on the frame mechanism 1, at this time, a plurality of U-shaped plates 201 with arc-shaped plates 202 are placed equidistantly inside each rear reinforcing shell 108, then one of the connecting blocks 203 is used to drive the long rod 204 connected thereto and the plurality of auxiliary blocks 205 and the plurality of round plates 211 fixed on the long rod 204 to move, then the long rod 204 is passed through the inside of the corresponding set of auxiliary holes 210 of one of the longitudinal beams 101, at this time, the auxiliary blocks 205 moving together will push all the round head rods 206 on the path to move, while the round head rods 206 moving will make the corresponding springs 207 be compressed in cooperation with the corresponding U-shaped plates 201, and the round head rods 206 moving will also make the T-shaped rods 208 connected thereto move, when the long rod 204 completes the moving operation, at this time, each round plate 211 is just inside each auxiliary hole 210, and each auxiliary block 205 is just between the corresponding two round head rods 206, and the clamping end of each T-shaped rod 208 is clamped on the corresponding rear reinforcing shell 108 and the corresponding longitudinal beam 101, then the hand-screwed screws 209 and the connecting block 203 are used to fix the moved long rod 204, then the above steps are repeated to move the corresponding long rod 204 of the other connecting block 203 to the corresponding position and fix it. When the reinforcing mechanism 2 completes the installation operation on the frame mechanism 1, at this time, the front cross beam 106 is placed between the interiors of the two front reinforcing shells 105, then the prepared bolts and nuts are used to fix the two longitudinal beams 101, the two front reinforcing shells 105 and the front cross beam 106 together, then the prepared bolts and nuts are used to fix the front cross beam 106 and the front baffle 107 together, after that, the rear cross beam 109 is placed between the interiors of the two rear reinforcing shells 108, after the rear cross beam 109 completes the placement operation, the prepared bolts and nuts are used to fix the rear cross beam 109, the two longitudinal beams 101 and the two rear reinforcing shells 108 together, then the prepared bolts and nuts are used to fix the rear cross beam 109 and the rear baffle 110 together, so the overall lightweight light truck frame assembly assembly is completed, when the frame assembly bears complex load, at this time, through the cooperation of the U-shaped plate 201, the arc-shaped plate 202, the round head rod 206, the T-shaped rod 208 and the auxiliary block 205, the bearing strength of the frame assembly can be increased, when the frame is subjected to front impact or rear impact, at this time, through the cooperation of the front cross beam 106, the rear cross beam 109, the front baffle 107, the rear baffle 110, the front reinforcing shell 105 and the rear reinforcing shell 108, the impact resistance of the frame assembly can be increased.

[0026] Although the present application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can be modified, or some of the technical features can be replaced by equivalent features, by those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A lightweight light truck frame assembly, comprising a frame mechanism (1), characterized in that: The frame mechanism (1) includes two longitudinal beams (101), and a reinforcing mechanism (2) is provided on the frame mechanism (1). The reinforcing mechanism (2) includes two sets of U-shaped plates (201) and two sets of auxiliary holes (210). An arc-shaped plate (202) is fixed to the top of the inner wall of each U-shaped plate (201) and between the top of the inner wall. A connecting block (203) is provided on the outer surface of one of the U-shaped plates (201) in each set. A long rod (204) is provided between the inner surfaces of each U-shaped plate (201) in each set. Multiple auxiliary blocks (205) are provided on the outer surface of each long rod (204). Each U-shaped plate (201) has a spring (207) fixed at the top and bottom of its inner wall, a T-shaped rod (208) movably passing through the top and bottom of its inner wall, a hand screw (209) movably passing through the surface of each connecting block (203), a round-headed rod (206) provided inside each spring (207), and multiple round plates (211) fixedly sleeved on the outer surface of each long rod (204).

2. The lightweight light truck frame assembly according to claim 1, characterized in that: The outer arc surface of each of the arc plates (202) is in contact with the inner surface of each U-shaped plate (201), the threaded end of each of the hand screws (209) is threaded to the outer surface of the corresponding U-shaped plate (201), each of the connecting blocks (203) is fixed to one end of each long rod (204), each of the circular plates (211) is distributed inside each of the auxiliary holes (210), and the outer surface of each circular plate (211) is in contact with the inner wall of each auxiliary hole (210).

3. The lightweight light truck frame assembly according to claim 1, characterized in that: The hand-tightening screw (209) is used to fix the connecting block (203) on the U-shaped plate (201). Both ends of the auxiliary block (205) are pointed cones and have smooth surfaces. The round head surface of each round head rod (206) is in contact with the surface of the corresponding auxiliary block (205). One end of each spring (207) is fixed to the surface of the corresponding round head rod (206).

4. The lightweight light truck frame assembly according to claim 1, characterized in that: Each of the round-headed rods (206) is fixed to each of the T-shaped rods (208), each of the T-shaped rods (208) is located inside each of the springs (207), each of the long rods (204) is located between the interiors of each set of auxiliary holes (210), and the diameter of the middle section of the auxiliary block (205) is the same as the inner diameter of the auxiliary hole (210).

5. The lightweight light truck frame assembly according to claim 1, characterized in that: The snap-fit ​​end of each T-shaped rod (208) movably penetrates the inner surface of the corresponding longitudinal beam (101). A rear mounting seat (104) is provided on the surface of each longitudinal beam (101) near one end, and a front mounting seat (102) is provided on the surface of each longitudinal beam (101) near the other end.

6. The lightweight light truck frame assembly according to claim 5, characterized in that: Each of the longitudinal beams (101) is equipped with multiple mounting brackets (103) on its surface. Each of the longitudinal beams (101) is equipped with a rear reinforcing shell (108) near one end of its interior. The U-shaped plate (201), the corresponding rear reinforcing shell (108), and the corresponding longitudinal beam (101) are fixed together by auxiliary blocks (205) and T-shaped rods (208). The snap-fit ​​end of each T-shaped rod (208) movably penetrates the inner surface of the corresponding rear reinforcing shell (108). Each of the longitudinal beams (101) is equipped with a front reinforcing shell (105) near the other end of its interior.

7. The lightweight light truck frame assembly according to claim 6, characterized in that: A front crossbeam (106) is provided between the interiors of the two front reinforcing shells (105), and a front baffle (107) is installed on the surface of the two front crossbeams (106). The surface of the front baffle (107) is in contact with the end faces of the two longitudinal beams (101) and the end faces of the two front crossbeams (106). A rear crossbeam (109) is provided between the interiors of the two rear reinforcing shells (108).

8. The lightweight light truck frame assembly according to claim 7, characterized in that: The surface of the rear crossbeam (109) is fitted with a rear baffle (110), the surface of the rear baffle (110) is in contact with the end faces of the two longitudinal beams (101) and the end faces of the two rear crossbeams (109), and a plurality of middle crossbeams (111) are provided between the interiors of the two rear reinforcing shells (108), and each auxiliary hole (210) is pre-set on the corresponding middle crossbeam (111).

9. The lightweight light truck frame assembly according to claim 8, characterized in that: Two symmetrical reinforcing strips (112) are fixed on each of the middle crossbeams (111). The two longitudinal beams (101), the two front reinforcing shells (105) and the front crossbeam (106) are connected by bolts and nuts. The two longitudinal beams (101), the two rear reinforcing shells (108) and the rear crossbeam (109) are connected by bolts and nuts.

10. The lightweight light truck frame assembly according to claim 8, characterized in that: The two longitudinal beams (101), the multiple middle cross beams (111), and the two rear reinforcing shells (108) are connected by bolts and nuts. The front mounting base (102), the corresponding longitudinal beam (101), and the corresponding rear reinforcing shell (108) are connected by bolts and nuts. The rear mounting base (104), the corresponding longitudinal beam (101), and the corresponding rear reinforcing shell (108) are connected by bolts and nuts.

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