High-Security Lightweight Frame Assembly

Abstract

The present invention provides a highly safe and lightweight vehicle frame assembly, which includes two groups of vehicle frame longitudinal beams. An adjusting component with cross hinges is arranged between the two groups of vehicle frame longitudinal beams. By changing the angle of the adjusting component, it is convenient to adapt it to the installation position of the vehicle body. End cross beams are arranged at both ends between the two groups of vehicle frame longitudinal beams. The end cross beams are slidably connected within the vehicle frame longitudinal beams following the angle change of the adjusting component to ensure the parallelism between the two groups of vehicle frame longitudinal beams. Support feet are installed at both ends of the vehicle frame longitudinal beams, and the vehicle frame is firmly connected to the vehicle body through the vehicle frame longitudinal beams and four groups of support feet. Two groups of end weight reduction holes are symmetrically opened at both ends within the vehicle frame longitudinal beams, and four groups of middle weight reduction holes are opened in the middle within the vehicle frame longitudinal beams. By changing the angle of the adjusting component, it is convenient for the vehicle frame to better adapt to the vehicle body. When the adjusting component adjusts the angle, the end cross beams slide within the vehicle frame longitudinal beams following the angle change of the adjusting component, further ensuring the parallelism between the two groups of vehicle frame longitudinal beams.

Description

Technical Field

[0001] The present invention relates to the technical field of frame manufacturing, and more specifically to a high-safety lightweight frame assembly. Background Art

[0002] A vehicle can have a non-load-bearing structure (also known as a cab-frame separated structure). In other words, the body and the frame longitudinal beams are separate components, i.e., modular, and the body is supported on and attached to the frame longitudinal beams. A vehicle can be an integral structure. In an integral structure, the body (e.g., side sills, pillars, roof longitudinal beams, etc.) serves as the frame (including frame longitudinal beams, etc.), and the body (including side sills, pillars, roof longitudinal beams, etc.) can be integral, i.e., a continuous one-piece unit. A vehicle can have a non-load-bearing structure (also known as a cab-frame separated structure). In other words, the body and the frame longitudinal beams are separate components, i.e., modular, and the body is supported on and attached to the frame longitudinal beams. A vehicle can be an integral structure. In an integral structure, the body (e.g., side sills, pillars, roof longitudinal beams, etc.) serves as the frame (including frame longitudinal beams, etc.), and the body (including side sills, pillars, roof longitudinal beams, etc.) can be integral or a continuous one-piece unit. Currently, for the convenience of frame production or to achieve frame generalization, the frame is usually divided into multiple segments, and adjacent segments of the frame are fixedly connected by fasteners. However, with this method, when the vehicle is impacted from the front, the frame or the body may deform. The deformation can absorb energy, redirect, transform, and convert kinetic energy, and the forward movement of the vehicle can be redirected vertically. Due to the relatively low structural strength at the connection between the segments of the frame, the overall structural strength of the frame is small. Therefore, the present application provides a lightweight frame assembly to meet the requirements.

[0003] A lightweight frame assembly disclosed in "CN116001913A" relates to the technical field of frame assemblies, including a frame assembly body. A pair of wire-passing holes are provided on the frame assembly body. Mounting holes are provided on the frame assembly body. Machine connection holes are provided on the frame assembly body. The diameter of the machine connection holes is larger than the diameter of the mounting holes. Casting brackets are fixedly connected to both ends of the frame assembly body. A lower bumper connection part is fixedly connected to one side of the casting bracket. Round holes are provided on the lower bumper connection part. The device has a reasonable structure, realizes that the overall strength of the frame assembly body can be increased through the reinforcement component, and then through the buffer component, when the reinforcement component is impacted, the buffer component can absorb part of the energy received by the impact, preventing huge energy from being conducted to the frame assembly body, which will affect the overall stability of the frame assembly body.

[0004] However, the following problems still exist during the implementation of the above device:

[0005] 1. At present, the governance of over-limit and over-load transportation has become increasingly strict, and the heavy vehicle transportation ecology has been fully switched from frequent overloading to standard-load transportation. On the premise that the vehicle weight is the same, the lighter the chassis weight, the larger its load-bearing space. On the premise of ensuring reliability, the requirement for the frame weight is getting higher and higher;

[0006] 2. When the frame and the vehicle body are installed, the conventional welded integral frame is not conducive to installation. Moreover, when the vehicle is impacted from the front, due to the lack of buffering at the connection between the frame and the vehicle body, the frame or the vehicle body may be deformed, resulting in scrapping. Summary of the Invention

[0007] The purpose of the present invention is to provide a high-safety lightweight frame assembly to solve the problems raised in the above background technology.

[0008] To achieve the above purpose, the present invention provides the following technical solutions:

[0009] A high-safety lightweight frame assembly includes two groups of frame longitudinal beams. An adjusting assembly with cross-hinged joints is arranged between the two groups of frame longitudinal beams. When installing the frame, by changing the angle of the adjusting assembly, it is convenient to adapt to the installation position of the vehicle body. End cross beams are arranged at both ends between the two groups of frame longitudinal beams. The end cross beams are slidably connected in the frame longitudinal beams following the angle change of the adjusting assembly to ensure the parallelism between the two groups of frame longitudinal beams;

[0010] Support feet are installed at both ends of the frame longitudinal beams, and the frame is firmly connected to the vehicle body through the frame longitudinal beams and four groups of support feet.

[0011] Preferably, two groups of end weight reduction holes are symmetrically opened at both ends inside the frame longitudinal beams, and four groups of middle weight reduction holes are opened in the middle of the frame longitudinal beams. A number of installation holes are opened inside the frame longitudinal beams.

[0012] Preferably, the adjusting assembly includes four balance beams. One end of each balance beam is connected with a connecting ear plate, and the balance beams are pin-connected to the inner side of the frame longitudinal beams through the connecting ear plates. The other ends of the four balance beams are hinged through a balance beam hinge shaft.

[0013] Preferably, ear plates are fixedly installed on the inner walls of the frame longitudinal beams. A pin shaft is arranged between every two adjacent ear plates. The connecting ear plate enables the balance beam and the frame longitudinal beam to be pin-connected through the pin shaft.

[0014] Preferably, a spacer sleeve is arranged on the surface of the balance beam hinge shaft between the balance beams, and hinge shaft limiting plates are connected to both ends of the balance beam hinge shaft.

[0015] Preferably, limiting strips are symmetrically arranged on both sides of the end cross beam, an end cross beam guide groove is opened in the frame longitudinal beam, the end cross beam and the end cross beam guide groove are slidably connected, limiting guide grooves are symmetrically opened in the end cross beam guide groove, and the limiting guide grooves and the limiting strips are matched.

[0016] Preferably, both ends of the end cross beam extending to the outside of the frame longitudinal beam are provided with a limit guide assembly, and the adjustment assembly can change the angle to adjust the distance between the two groups of frame longitudinal beams, and the limit guide assembly is used to prevent the frame longitudinal beam and the end cross beam from slipping.

[0017] Preferably, the limit guide assembly includes a connecting plate and a limit rod symmetrically arranged on one side of the connecting plate, the connecting plate is fixedly connected to the two ends of the end cross beam, the limit rod and the frame longitudinal beam are slidably connected, and a reinforcing plate is arranged at the bottom inner side of the frame longitudinal beam to enhance the structural strength of the sliding connection between the frame longitudinal beam and the end cross beam.

[0018] Preferably, the frame longitudinal beam comprises a separable frame front longitudinal beam and a frame rear longitudinal beam, a connecting slot is provided in the frame front longitudinal beam, a connecting plug plate is connected to one side of the frame rear longitudinal beam, folded edges are provided on both sides of the connecting plug plate, and the folded edges are connected to the curved surface of the connecting plug plate body.

[0019] Preferably, two groups of transverse reinforcing ribs are provided on the bottom surface of the support plate, and longitudinal reinforcing ribs are connected between the transverse reinforcing ribs. A detachable structure is provided between the frame longitudinal beam and the support plate, and a connecting component is provided between the frame longitudinal beam and the support plate. The connecting component includes a combination block, a positioning groove is provided in the combination block, the frame longitudinal beam and the positioning groove are engaged, and a clearance groove is provided in the combination block in a direction perpendicular to the positioning groove. The combination block is threadedly connected to the support plate after a positioning bolt penetrates the frame longitudinal beam and the clearance groove, a threaded hole matching the positioning bolt is provided in the support plate, and a support plate mounting hole is provided in the support plate.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In the present invention, two groups of frame longitudinal beams are respectively arranged in the frame, and a cross-hinged adjustment assembly is arranged between the frame longitudinal beams. By changing the angle of the adjustment assembly, the frame and the vehicle body can be better adapted. When the adjustment assembly is adjusted in angle, the end cross beam slides in the frame longitudinal beam following the angle change of the adjustment assembly, further ensuring the parallelism between the two groups of frame longitudinal beams;

[0022] 2. In the present invention, a combined block is provided between the longitudinal beam of the vehicle frame and the support foot plate. A positioning groove and a relief groove perpendicular to each other are respectively formed in the combined block. The relief groove is inserted into the support foot plate, and the relief groove penetrates the combined block. At the same time, a relief hole is formed in the longitudinal beam of the vehicle frame. The positioning bolt penetrates the relief groove and the relief hole, and finally, the longitudinal beam of the vehicle frame and the support foot plate are tightly connected through threaded connection with a threaded hole.

[0023] 3. In the present invention, the structure of the vehicle frame is set as two groups of longitudinal beams of the vehicle frame. The longitudinal beams of the vehicle frame are set as the front longitudinal beam and the rear longitudinal beam of the vehicle frame. They are slidably connected by an end cross beam between the longitudinal beams of the vehicle frame. The overall connection structure is concise. According to the layout of each assembly of the vehicle body, the wall thickness of the longitudinal beam of the vehicle frame and the end cross beam is optimized to reduce the bending and torsional stress of the vehicle frame and improve the stress concentration phenomenon. At the same time, an end weight reduction hole and a middle weight reduction hole are formed in the longitudinal beam of the vehicle frame, which can not only ensure the use strength of the vehicle frame and the reliability of the vehicle frame, but also optimize the light weight of the vehicle frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the main perspective structural schematic diagram of the present invention;

[0025] Figure 2 is the bottom perspective structural schematic diagram of the present invention;

[0026] Figure 3 is the Figure 2 amplified structural schematic diagram of part A in the present invention;

[0027] Figure 4 is the three-dimensional structural schematic diagram of the adjustment component of the present invention;

[0028] Figure 5 is the split structural schematic diagram of the longitudinal beam of the vehicle frame of the present invention;

[0029] Figure 6 is the three-dimensional structural schematic diagram of Embodiment 5 of the present invention;

[0030] Figure 7 is the exploded structural schematic diagram of Embodiment 5 of the present invention.

[0031] In the figure: 1. Frame longitudinal beam; 2. End weight reduction hole; 3. Middle weight reduction hole; 4. End cross beam; 5. Balance beam; 6. Support foot plate; 7. Transverse reinforcing rib; 8. Mounting hole; 9. Ear plate; 10. Balance beam hinge shaft; 11. Support foot plate mounting hole; 12. Longitudinal reinforcing rib; 13. Connecting ear plate; 14. Pin shaft; 15. Limit rod; 16. Connecting plate; 17. Limit strip; 18. Limit guiding groove; 19. Positioning bolt; 20. End cross beam guiding groove; 21. Hinge shaft limit plate; 22. Sleeve; 23. Front longitudinal beam of the frame; 24. Rear longitudinal beam of the frame; 25. Connecting plug board; 26. Connecting slot; 27. Combined block; 28. Threaded hole; 29. Positioning groove; 30. Reinforcing plate; 31. Relief groove; 32. Relief hole. Detailed implementation mode

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.

[0033] Please refer to Figure 1-7 , the present invention provides a technical solution:

[0034] Embodiment 1:

[0035] A high-safety lightweight frame assembly includes two groups of frame longitudinal beams 1. Two groups of end weight reduction holes 2 are symmetrically opened at both ends inside the frame longitudinal beam 1, and four groups of middle weight reduction holes 3 are opened in the middle of the frame longitudinal beam 1. End cross beams 4 are arranged at both ends between the two groups of frame longitudinal beams 1, and a number of mounting holes 8 are opened in the frame longitudinal beam 1.

[0036] In this embodiment, the structure of the frame is set as two groups of frame longitudinal beams 1, which are slidably connected by end cross beams 4 between the frame longitudinal beams 1. The overall connection structure is concise. According to the layout of each assembly of the vehicle body, the wall thickness of the frame longitudinal beam 1 and the end cross beam 4 is optimized to reduce the bending and torsional stress of the frame and improve the stress concentration phenomenon. At the same time, end weight reduction holes 2 and middle weight reduction holes 3 are opened inside to not only ensure the use strength of the frame and the reliability of the frame, but also optimize the lightweight of the frame.

[0037] An adjustment assembly with cross hinges is arranged between the two groups of frame longitudinal beams 1. When installing the frame, the angle of the adjustment assembly is changed to facilitate its adaptation to the installation position of the vehicle body. The end cross beam 4 slides and connects inside the frame longitudinal beam 1 following the angle change of the adjustment assembly to ensure the parallelism between the two groups of frame longitudinal beams 1.

[0038] Specifically, the adjustment component includes four balance beams 5. One end of each balance beam 5 is connected with a connecting ear plate 13. The balance beam 5 is pin-connected to the inner side of the vehicle frame longitudinal beam 1 through the connecting ear plate 13. The other ends of the four balance beams 5 are hinged through a balance beam hinge shaft 10. An ear plate 9 is fixedly installed on the inner wall of the vehicle frame longitudinal beam 1. A pin shaft 14 is arranged between every two adjacent ear plates 9. The connecting ear plate 13 enables the balance beam 5 and the vehicle frame longitudinal beam 1 to be pin-connected through the pin shaft 14.

[0039] In this embodiment, to ensure the connection strength between the two vehicle frame longitudinal beams 1, four balance beams 5 are provided, and the four balance beams 5 are hinged by the balance beam hinge shaft 10. When installing the vehicle frame longitudinal beam 1, the connection angle of the balance beam 5 can be adjusted according to the installation requirements. When adjusted to the appropriate position, the vehicle frame and the vehicle body are connected and fixed by using the installation holes 8 and the support foot plate installation holes 11.

[0040] It should be noted that a connecting ear plate 13 is provided at one end of the balance beam 5 away from the balance beam hinge shaft 10, and ear plates 9 are arranged in pairs on the inner wall of the vehicle frame longitudinal beam 1. The connecting ear plate 13 is pin-connected to the ear plate 9 through the pin shaft 14. Therefore, both ends of the balance beam 5 are movable connection structures, which not only reduce interference during the installation of the vehicle frame, but also provide corresponding buffering at the connection position when the vehicle is impacted, reducing the scrapping probability caused by the deformation of the vehicle frame.

[0041] A spacer sleeve 22 is arranged on the surface of the balance beam hinge shaft 10 between the balance beams 5, and hinge shaft limit plates 21 are connected to both ends of the balance beam hinge shaft 10.

[0042] It should be noted that spacer sleeves 22 are arranged on the surface of the balance beam 5 and between adjacent balance beams 5. The spacer sleeves 22 can not only ensure the interval between the balance beams 5, ensure the smoothness of the pin-connected structure of the balance beam 5, but also ensure the stability of the horizontal rotation structure of the balance beam 5.

[0043] Support foot plates 6 are installed at both ends of the vehicle frame longitudinal beam 1. The vehicle frame is firmly connected to the vehicle body through the vehicle frame longitudinal beam 1 and the four support foot plates 6.

[0044] In this embodiment, support foot plates 6 are arranged at both ends of the vehicle frame longitudinal beam 1. The support foot plates 6 increase the connection area between the entire vehicle frame and the vehicle body. Therefore, the stability of the connection structure between the vehicle frame and the vehicle body is ensured.

[0045] Embodiment Two:

[0046] Based on Embodiment 1, by utilizing the sliding connection between the end crossbeam 4 and the vehicle frame longitudinal beam 1, the parallelism between the two sets of vehicle frame longitudinal beams 1 is ensured. However, relying solely on the sliding structure between the end crossbeam 4 and the vehicle frame longitudinal beam 1, the contact area between the end crossbeam 4 and the end crossbeam guiding groove 20 is relatively large. When adjusting the connection angle between the balance beams 5, the smoothness of the angle adjustment may be affected due to the large frictional force. Therefore, the following structure is provided:

[0047] Limit strips 17 are symmetrically arranged on both sides of the end crossbeam 4. An end crossbeam guiding groove 20 is formed in the vehicle frame longitudinal beam 1. The end crossbeam 4 is slidably connected to the end crossbeam guiding groove 20. Limit guiding grooves 18 are symmetrically formed in the end crossbeam guiding groove 20, and the limit guiding grooves 18 are arranged in a matching manner with the limit strips 17.

[0048] In this embodiment, the length and width of the end crossbeam guiding groove 20 are both larger than the external dimensions of the end crossbeam 4. At the same time, limit strips 17 are symmetrically arranged on both sides of the end crossbeam 4. Specifically, the limit strips 17 are arranged in a T-shaped structure. Limit guiding grooves 18 are formed in the vehicle frame longitudinal beam 1 at the position where the end crossbeam guiding groove 20 is formed, and the limit guiding grooves 18 are arranged in a matching manner with the limit strips 17. Therefore, the contact area between the end crossbeam 4 and the vehicle frame longitudinal beam 1 is effectively reduced, and the sliding frictional force is decreased, providing convenience for the adjustment during installation.

[0049] Embodiment 3:

[0050] Based on Embodiment 1, further, considering that during the adjustment process, the end crossbeam 4 and the vehicle frame longitudinal beam 1 may slip off, affecting the integrity of the entire vehicle frame, limit guiding components are arranged at both ends of the end crossbeam 4 extending to the outside of the vehicle frame longitudinal beam 1. The adjusting component can change the angle to adjust the distance between the two sets of vehicle frame longitudinal beams 1, and the limit guiding component is used to prevent the vehicle frame longitudinal beam 1 and the end crossbeam 4 from slipping off.

[0051] Specifically, the limit guiding component includes a connecting plate 16 and two limit rods 15 symmetrically arranged on one side of the connecting plate 16. The connecting plate 16 is fixedly connected to both ends of the end crossbeam 4. The limit rods 15 are slidably connected to the vehicle frame longitudinal beam 1. A reinforcing plate 30 is arranged at the inner bottom of the vehicle frame longitudinal beam 1 to enhance the structural strength of the sliding insertion joint between the vehicle frame longitudinal beam 1 and the end crossbeam 4.

[0052] In this embodiment, connecting plates 16 are arranged at both ends of the end crossbeam 4. At the same time, two sets of limit rods 15 are symmetrically arranged on one side of the connecting plate 16, which can not only further ensure the perpendicularity between the end crossbeam 4 and the vehicle frame longitudinal beam 1, but also ensure the parallelism of the vehicle frame longitudinal beam 1. It should be noted that in order to ensure the smoothness of the vehicle frame longitudinal beam 1 and the end crossbeam 4, those skilled in the art will set structures such as linear bearings in the holes where the limit rods 15 slide to increase the lubrication degree.

[0053] Example 4:

[0054] Based on Example 1, the longitudinal beam 1 of the vehicle frame and the support foot plate 6 are connected by welding. During installation, it is necessary to adjust the space, and it is easily restricted during installation, which is not conducive to the installation between the vehicle frame and the vehicle body. Therefore, the following structure is set in this embodiment:

[0055] Two groups of transverse reinforcing ribs 7 are arranged on the bottom surface of the support foot plate 6. A longitudinal reinforcing rib 12 is connected between the transverse reinforcing ribs 7. The connection between the longitudinal beam 1 of the vehicle frame and the support foot plate 6 is set as a detachable structure, and a connection component is arranged between the longitudinal beam 1 of the vehicle frame and the support foot plate 6. The connection component includes a combined block 27. A positioning groove 29 is formed in the combined block 27. The longitudinal beam 1 of the vehicle frame is engaged with the positioning groove 29. A relief groove 31 is formed in the combined block 27 in a direction perpendicular to the positioning groove 29. The combined block 27 is internally threaded with the support foot plate 6 through the longitudinal beam 1 of the vehicle frame and the relief groove 31 by a positioning bolt 19. A threaded hole 28 matching the positioning bolt 19 is formed in the support foot plate 6, and a support foot plate mounting hole 11 is formed in the support foot plate 6.

[0056] In this embodiment, a group of combined blocks 27 are provided. A positioning groove 29 and a relief groove 31 perpendicular to each other are respectively formed in the combined block 27. The positioning groove 29 is inserted into the longitudinal beam 1 of the vehicle frame, and the relief groove 31 is inserted into the support foot plate 6. The relief groove 31 penetrates through the combined block 27. At the same time, a relief hole 32 is formed in the longitudinal beam 1 of the vehicle frame. The positioning bolt 19 penetrates through the relief groove 31 and the relief hole 32, and then is threadedly connected with the threaded hole 28, so as to tightly connect the longitudinal beam 1 of the vehicle frame and the support foot plate 6;

[0057] It should be noted that those skilled in the art can respectively form corresponding mounting holes in the longitudinal beam 1 of the vehicle frame and the support foot plate 6 according to the design and installation requirements, which can be through holes or threaded holes.

[0058] It should be noted that since the vehicle frame needs to be connected to many internal structures when connecting to the vehicle body, it is necessary to ensure the strength of the longitudinal beam 1 of the vehicle frame and the support foot plate 6. Therefore, a reinforcing plate 30 is arranged at the bottom of the longitudinal beam 1 of the vehicle frame, and a limiting strip 17 and two groups of transverse reinforcing ribs 7 are arranged at the bottom of the support foot plate 6.

[0059] Example 5:

[0060] Based on the embodiment, since the frame is relatively large, it is not conducive to operation during the lifting and transportation process. Therefore, in this embodiment, the frame longitudinal beam 1 is set to a detachable structure, specifically including: the frame longitudinal beam 1 includes a separable frame front longitudinal beam 23 and a frame rear longitudinal beam 24, a connecting slot 26 is opened in the frame front longitudinal beam 23, a connecting plug plate 25 is connected to one side of the frame rear longitudinal beam 24, and folded edges are set on both sides of the connecting plug plate 25, and the folded edges are connected to the curved surface of the connecting plug plate 25 body.

[0061] In this embodiment, in order to prevent the frame from occupying a large space, which is not conducive to transportation, lifting and installation, the frame longitudinal beam 1 is set to a detachable structure, including a front longitudinal beam 23 and a rear longitudinal beam 24. A connecting plug plate 25 is connected to one side of the rear longitudinal beam 24, and a connecting slot 26 is opened on one side of the front longitudinal beam 23. The connecting slot 26 and the connecting plug plate 25 are matched. During installation, after the connecting plug plate 25 and the connecting slot 26 are plugged in, the end cross beam 4 is inserted into the two groups of frame longitudinal beams 1, and finally the connecting plate 16 is connected to one end of the end cross beam 4 by bolts to complete the installation, and the rear longitudinal beam 24 and the front longitudinal beam 23 will not slip off.

[0062] Working principle: In the present invention, the frame includes two detachable groups of front longitudinal beams 23, rear longitudinal beams 24, two groups of end cross beams 4 and four groups of support foot plates 6. The end cross beams 4 are first slidably connected with the front longitudinal beams 23 and rear longitudinal beams 24, respectively. After the connection, the connecting plate 16 and the limiting rod 15 on one side of the connecting plate 16 are inserted into the frame longitudinal beam 1, and then the connecting plate 16 and the end of the end cross beam 4 are fixedly connected. Finally, the combination block 27 is used to be plugged with the frame longitudinal beam 1 and the support foot plate 6, and the positioning bolt 19 is used to penetrate the clearance groove 31 and the clearance hole 32 in sequence and then be threadedly connected to the support foot plate 6.

[0063] It should be noted that, according to the arrangement of each assembly of the vehicle body, the wall thickness of the frame longitudinal beam 1 and the end cross beam 4 is optimized to reduce the bending and torsional stress of the frame and improve the stress concentration phenomenon. At the same time, the end weight reduction hole 2 and the middle weight reduction hole 3 are opened in the frame longitudinal beam, which can not only ensure the use strength and reliability of the frame, but also optimize the lightweight of the frame.

[0064] Furthermore, a limit guide groove 18 is provided in the frame longitudinal beam 1 at the position where the end cross beam guide groove 20 is provided, and the limit guide groove 18 and the limit strip 17 are matched and arranged, thereby effectively reducing the contact area between the end cross beam 4 and the frame longitudinal beam 1, reducing the sliding friction, and providing convenience for adjustment during installation; since the frame and the vehicle body need to be connected with many internal structures when connected, it is necessary to ensure the strength of the frame longitudinal beam 1 and the support foot plate 6, therefore, a reinforcing plate 30 is provided at the bottom of the frame longitudinal beam 1, and a limit strip 17 and two sets of transverse reinforcing ribs 7 are provided at the bottom of the support foot plate 6;

[0065] Specifically, to prevent the frame from occupying a large space and being unfavorable for transportation, hoisting and installation, the frame longitudinal beam 1 is set as a split structure. During installation, after the connecting plug plate 25 and the connecting slot 26 are inserted and combined, the end cross beam 4 is inserted into two groups of frame longitudinal beams 1, and finally the connecting plate 16 is bolted to one end of the end cross beam 4 to complete the installation, and the rear longitudinal beam 24 and the front longitudinal beam 23 of the frame will not slip off either.

[0066] Connecting plates 16 are arranged at both ends of the end cross beam 4. At the same time, two groups of limiting rods 15 are symmetrically arranged on one side of the connecting plate 16, which can not only further ensure the perpendicularity between the end cross beam 4 and the frame longitudinal beam 1, but also ensure the parallelism of the frame longitudinal beam 1. It should be noted that, to ensure the smoothness of the frame longitudinal beam 1 and the end cross beam 4, those skilled in the art will set structures such as linear bearings in the holes where the limiting rods 15 slide to increase the lubrication degree.

[0067] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. High-safety lightweight frame assembly, characterized by: The invention comprises two groups of frame longitudinal beams (1), wherein a cross-hinged adjustment component is arranged between the two groups of frame longitudinal beams (1), and when the frame is installed, the angle of the adjustment component is changed to facilitate its adaptation to the installation position of the vehicle body, and end cross beams (4) are arranged at both ends between the two groups of frame longitudinal beams (1), and the end cross beams (4) are slidably connected in the frame longitudinal beams (1) following the change in the angle of the adjustment component, thereby ensuring the parallelism between the two groups of frame longitudinal beams (1); Support plates (6) are installed at both ends of the frame longitudinal beam (1), and the frame is connected and fastened to the vehicle body through the frame longitudinal beam (1) and the four sets of support plates (6); The bottom surface of the support plate (6) is provided with two groups of transverse reinforcing ribs (7), and longitudinal reinforcing ribs (12) are connected between the transverse reinforcing ribs (7). A detachable structure is provided between the frame longitudinal beam (1) and the support plate (6), and a connecting assembly is provided between the frame longitudinal beam (1) and the support plate (6). The connecting assembly comprises a combination block (27), a positioning groove (29) is provided in the combination block (27), the frame longitudinal beam (1) and the positioning groove (29) are engaged with each other, and a clearance groove (31) is provided in the combination block (27) in a direction perpendicular to the positioning groove (29). A positioning bolt (19) passes through the frame longitudinal beam (1) and the clearance groove (31) in the combination block (27), and is then threadedly connected to the support plate (6). A threaded hole (28) matching the positioning bolt (19) is provided in the support plate (6), and a support plate mounting hole (11) is provided in the support plate (6).

2. The high-safety and lightweight frame assembly according to claim 1 is characterized in that: Two groups of end weight-reducing holes (2) are symmetrically provided at both ends of the frame longitudinal beam (1), and four groups of middle weight-reducing holes (3) are provided in the middle of the frame longitudinal beam (1), and a plurality of groups of mounting holes (8) are provided in the frame longitudinal beam (1).

3. The high-safety and lightweight frame assembly according to claim 1 is characterized in that: The adjustment assembly comprises four groups of balance beams (5), one end of each balance beam (5) is connected to a connecting ear plate (13), the balance beam (5) is pinned to the inner side of a frame longitudinal beam (1) via the connecting ear plate (13), and the other ends of the four groups of balance beams (5) are hinged via a balance beam hinge shaft (10).

4. The high-safety and lightweight frame assembly according to claim 3 is characterized in that: The inner wall of the frame longitudinal beam (1) is fixedly mounted with an ear plate (9), a pin shaft (14) is provided between each two adjacent groups of the ear plates (9), and the connecting ear plates (13) are pin-connected to the balance beam (5) and the frame longitudinal beam (1) via the pin shaft (14).

5. The high-safety and lightweight frame assembly according to claim 3 is characterized in that: A spacer sleeve (22) is provided on the surface of the balance beam hinge shaft (10) between the balance beam (5), and hinge shaft limit plates (21) are connected to both ends of the balance beam hinge shaft (10).

6. The high-safety and lightweight frame assembly according to claim 1 is characterized in that: Limiting strips (17) are symmetrically arranged on both sides of the end cross beam (4), an end cross beam guide groove (20) is provided in the frame longitudinal beam (1), the end cross beam (4) and the end cross beam guide groove (20) are slidably connected, limiting guide grooves (18) are symmetrically arranged in the end cross beam guide groove (20), and the limiting guide grooves (18) and the limiting strips (17) are matched.

7. The high-safety and lightweight frame assembly according to claim 1 is characterized in that: Both ends of the end cross beam (4) extending to the outside of the frame longitudinal beam (1) are provided with a limit guide assembly, and the spacing between the two groups of frame longitudinal beams (1) can be adjusted by changing the angle of the adjustment assembly, and the limit guide assembly is used to prevent the frame longitudinal beam (1) and the end cross beam (4) from slipping off.

8. The high-safety and lightweight frame assembly according to claim 7 is characterized in that: The limit guide assembly comprises a connecting plate (16) and a limit rod (15) symmetrically arranged on one side of the connecting plate (16); the connecting plate (16) is fixedly connected to the two ends of the end cross beam (4); the limit rod (15) is slidably connected to the frame longitudinal beam (1); a reinforcing plate (30) is arranged at the bottom inner side of the frame longitudinal beam (1) to enhance the structural strength of the sliding connection between the frame longitudinal beam (1) and the end cross beam (4).

9. The high-safety and lightweight frame assembly according to claim 1, characterized in that: The frame longitudinal beam (1) comprises a separable frame front longitudinal beam (23) and a frame rear longitudinal beam (24); a connection slot (26) is provided in the frame front longitudinal beam (23); a connection plug plate (25) is connected to one side of the frame rear longitudinal beam (24); folded edges are provided on both sides of the connection plug plate (25); the folded edges are connected to a curved surface of a main body of the connection plug plate (25).

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