Structure and process of full bearing type bottom skeleton

Abstract

The application relates to the technical field of automobile parts, in particular to a structure and process of a full-load type bottom framework, which comprises a bottom frame, and a tail beam assembly is fixedly installed at the rear side of the bottom frame. The structure and process of the full-load type bottom framework effectively enhance the mounting strength between the compressor tray and the tail beam assembly through the setting of the oblique pull rod, and the oblique pull rod is connected with the compressor tray and the tail beam assembly in a different way, that is, the oblique pull rod strengthens the right side of the compressor tray through the right side seat, therefore, the tail beam assembly can constrain the right side seat and the compressor tray through the oblique pull rod to resist the extrusion of the compressor tray caused by the deviation of the bottom frame, conversely, the tail beam assembly can limit the right side seat and the compressor tray through the oblique pull rod to resist the deviation of the bottom frame and the compressor tray, and the force stability of the connection state among the bottom frame, the tail beam assembly, the left side mounting support assembly and the compressor tray is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, specifically to the structure and process of a fully load-bearing chassis frame. Background Technology

[0002] The vehicle frame is a frame structure that spans the front and rear axles of a car. It is generally composed of longitudinal beams and crossbeams. The crossbeams ensure the torsional stiffness of the frame and bear longitudinal loads, and also support the main components of the car. The vehicle suspension brackets are the elastic connection components between the powertrain and the frame, and are one of the key paths for transmitting engine vibrations to the vehicle body.

[0003] In the traditional frames of large and medium-sized buses, the compressor bracket and water tank bracket are usually fixed to the left and right sides of the rear end of the frame with bolts.

[0004] An existing patent (publication number: CN108482487A) discloses a novel rear crossbeam structure for a fully load-bearing bus chassis, relating to the field of automotive component technology. It includes a rear crossbeam assembly, a compressor assembly, and a radiator support assembly. The inner side of the rear crossbeam assembly has symmetrical left and right suspension reinforcement plates, which are connected to the left and right longitudinal beams of the chassis, respectively. The compressor assembly is mounted on the left side of the rear crossbeam assembly, and the radiator support assembly is mounted on the right side. This structure improves the Z-axis bending stiffness and torsional stiffness of the chassis rear end by connecting the compressor support and the rear crossbeam assembly along the same X-axis. However, the installation connection of the compressor base is easily affected by the relative and opposite movement of the compressor crossbeam and the left longitudinal beam, resulting in poor stress stability of the connection state. Furthermore, in the event of a collision, the compressor may move forward, potentially damaging other components.

[0005] In view of this, we propose a structure and process for a fully load-bearing bottom frame. Summary of the Invention

[0006] The purpose of this invention is to provide a structure and process for a fully load-bearing base frame, to solve the problem mentioned in the background art that the installation and connection of the compressor base is easily affected by the relative and opposite movement of the compressor crossbeam and the left longitudinal beam, resulting in poor stress stability of the connection state, and that the compressor moving forward during a collision can easily damage other components. To achieve the above objective, this invention provides the following technical solution: a structure for a fully load-bearing base frame, including a base frame, wherein a tail crossbeam assembly is fixedly installed on the rear side of the base frame, and the tail crossbeam assembly is composed of an upper crossbeam and a lower crossbeam fixedly connected to each other.

[0007] Mounting bracket assemblies are provided on both the left and right sides of the tail beam assembly. The mounting bracket assembly on the right side is used to install the water tank, and the mounting bracket assembly on the left side is used to install the compressor.

[0008] A compressor tray is installed between the base frame and the left mounting bracket assembly, and a counteractor is provided between the compressor tray and the tail beam assembly.

[0009] Preferably, the counteractor includes a reinforcing plate disposed at the angle between the base frame and the tail beam assembly, and the reinforcing plate is fixedly connected to the base frame and the tail beam assembly.

[0010] Two sets of clamping plates are fixedly installed on the side wall of the reinforcing plate on the side opposite to the compressor tray. Each set of clamping plates consists of two clamping plates, and the two sets of clamping plates are located on the upper and lower sides of the reinforcing plate, respectively. The two sets of clamping plates are fixedly connected to the tail beam assembly.

[0011] A connecting rod is fixedly installed between the mounting bracket assembly on the left and the base frame, and a left seat is fixedly installed on the connecting rod. A right seat is fixedly installed on the front side wall of the clamping plate on the upper side.

[0012] The left tail of the compressor tray is fixedly connected to the left mounting bracket assembly, and the right tail of the compressor tray is clamped inside the upper single clamping plate. The left and right sides of the compressor tray are respectively mounted on the left and right seats.

[0013] The upper single-unit clamp is provided with a shifting component that cooperates with the compressor tray.

[0014] Positioning seats are fixedly installed on both the right side seat and the tail crossbeam assembly, and a diagonal tie rod is fixedly connected between the two positioning seats.

[0015] Preferably, the displacement assembly includes a spring cup fixedly disposed on the upper single set of clamps, and the spring cup is located on the lower clamp of the set of clamps. The spring cup communicates with the inner side of the two clamps, and a spring is disposed inside the spring cup. The spring pushes the compressor tray to fit against the upper clamp of the set of clamps.

[0016] The upper side of the clamping plate of this group has a pre-cut groove along the front-to-back direction.

[0017] Both the left and right seats are equipped with release devices for securing the compressor tray.

[0018] Preferably, the release device includes circular grooves respectively opened on the left side seat and the right side seat, and two semi-circular seats are movably arranged in the circular grooves. The groove wall of the circular groove is provided with an annular groove. The outer ring of the semi-circular seat is provided with a convex ring, and the two semi-circular seats are combined into a circular structure and are rotatably connected in the circular groove through the convex ring along the annular groove.

[0019] A clamp is provided between the two semicircular seats to cooperate with the compressor tray.

[0020] The circular groove has a notch on its lower rear side for the semi-circular seat to disengage.

[0021] Preferably, a reinforcing rod is fixedly connected between the connecting rod and the base frame, and the reinforcing rod is inclined to form a triangular structure with the connecting rod and the base frame.

[0022] Preferably, the connecting rod is connected to the left side seat via a support frame.

[0023] Preferably, the clamp and the compressor tray are provided with mutually cooperating teeth.

[0024] A process for a fully load-bearing base frame structure includes the following steps:

[0025] S1. Install the tail beam assembly at the rear of the base frame, then install the mounting bracket assembly on the left and right sides of the tail beam assembly. After installation, install the reinforcing plate and clamping plate on the base frame and tail beam assembly. Finally, install the compressor tray on the left side seat, right side seat, upper single clamping plate and left side mounting bracket assembly. Then use the diagonal tie rod to connect the right side seat to the tail beam assembly.

[0026] S2. The diagonal brace effectively enhances the installation strength between the compressor tray and the tail beam assembly. Unlike the direct connection between the compressor tray and the tail beam assembly, the diagonal brace provides lateral reinforcement along the right side of the compressor tray via the right side seat. Therefore, when the left mounting bracket assembly moves relative to the base frame (i.e., the angle between the left mounting bracket assembly and the base frame decreases) and applies pressure to the compressor tray, the tail beam assembly can constrain the right side seat and the compressor tray via the diagonal brace to resist the compression caused by the base frame's offset. Conversely, when the left mounting bracket assembly moves away from the base frame (i.e., the angle between the left mounting bracket assembly and the base frame increases) and applies tension to the compressor tray, the tail beam assembly can also restrict the right side seat and the compressor tray via the diagonal brace to resist the offset of the base frame and the compressor tray.

[0027] S3. In this type of installation structure between the rear crossbeam assembly and the compression tray, when the rear of the vehicle is hit, the left mounting bracket assembly and the rear crossbeam assembly connected to it are subjected to force and moved forward, which is transmitted to the clamp plate. The upper clamp plate in the upper single clamp plate is subjected to force and breaks along the pre-break groove. The corner of the compressor tray relative to the clamp plate is unrestrained. The spring in the spring cup applies an upward thrust to the compressor tray along the corner. Combined with the deformation of the left mounting bracket assembly, the compressor tray tilts to the left front side and pushes the compressor mounted on it out of the vehicle body.

[0028] S4. After the collision triggers the compressor tray to tilt, the tray body first drives the two sets of semicircular seats on the left and right sides to deflect along the circular grooves on both sides until one of the semicircular seats rotates obliquely downward to align with the notch. The semicircular seat disengages from the circular groove along the notch, causing the front half of the compressor tray to lose its constraint. With the upward push of the spring, the compressor tray is controlled to fall obliquely forward along its connection point with the left mounting bracket assembly.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0030] In this invention, the installation strength between the compressor tray and the tail beam assembly is effectively enhanced by the diagonal tie rod. Unlike the direct connection between the compressor tray and the tail beam assembly, the diagonal tie rod provides lateral reinforcement along the right side of the compressor tray via the right side seat. Therefore, when the left side mounting bracket assembly moves relative to the base frame and applies pressure to the compressor tray, the tail beam assembly can constrain the right side seat and the compressor tray through the diagonal tie rod, thereby resisting the compression caused by the base frame's offset on the compressor tray. Conversely, when the left side mounting bracket assembly moves away from the base frame and applies tension to the compressor tray, the tail beam assembly can also restrict the right side seat and the compressor tray through the diagonal tie rod, thereby resisting the offset of the base frame and the compressor tray. This significantly improves the stress stability of the connection between the base frame, the tail beam assembly, the left side mounting bracket assembly, and the compressor tray.

[0031] In this invention, the left mounting bracket assembly and the tail beam assembly connected to it are subjected to force and moved forward, which is transmitted to the clamping plate. The upper clamping plate of the upper single clamping plate is subjected to force and breaks along the pre-break groove. The corner of the compressor tray relative to the clamping plate is unconstrained. The spring in the spring cup applies an upward thrust to the compressor tray along this corner. Combined with the deformation of the left mounting bracket assembly, the compressor tray tilts to the left front side and pushes the compressor mounted on it out of the vehicle body. In this way, when a collision occurs, the direction of the compressor's collapse is actively pulled to avoid it from being directly displaced forward with the impact, which reduces the chain damage to other components in the underframe and facilitates subsequent maintenance of the compressor.

[0032] In this invention, the compressor tray tilts along the clamp, causing two sets of semicircular seats on the left and right sides to deflect along the circular grooves on both sides until one of the semicircular seats rotates obliquely downwards to align with the notch. The semicircular seat then disengages from the circular groove along the notch, causing the front half of the compressor tray to lose its constraint. With the upward push of the spring, the compressor tray is controlled to fall obliquely forward along its connection point with the left mounting bracket assembly. On the one hand, the active disconnection of the front connection point reduces the space required for the compressor tray to collapse. On the other hand, in the event of a collision that causes the connection between the left mounting bracket assembly and the compressor tray to break, the compressor tray and the compressor mounted on it can fall directly off the vehicle, reducing the damage to the side of the vehicle body caused by the active collapse and ejection. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0034] Figure 2 This is a partial three-dimensional structural schematic diagram from the front view of the present invention;

[0035] Figure 3 This is a partial three-dimensional structural schematic diagram from the rear view of the present invention;

[0036] Figure 4 This is a schematic diagram showing the separation of the compressor tray from the left side seat, right side seat, and clamping plate of the present invention;

[0037] Figure 5 This is a bottom view of the left side seat, right side seat, and clamping plate of the present invention;

[0038] Figure 6 This is a schematic diagram of the structure of the left side seat, clamping plate, and reinforcing plate of the present invention;

[0039] Figure 7 This is a bottom view of the left side seat, clamping plate, and reinforcing plate of the present invention;

[0040] Figure 8 This is a schematic diagram of the pre-cut groove and clamping plate of the present invention;

[0041] Figure 9 This is a schematic diagram of the semi-circular seat and circular groove of the present invention.

[0042] In the diagram: 1. Base frame; 2. Tail crossbeam assembly; 3. Mounting bracket assembly; 4. Compressor tray; 5. Reverse countermeasure; 51. Reinforcing plate; 52. Clamping plate; 53. Connecting rod; 54. Left side seat; 55. Right side seat; 56. Displacement assembly; 561. Spring cup; 562. Spring; 563. Pre-break groove; 564. Release device; 5641. Circular groove; 5642. Semicircular seat; 5643. Groove; 5644. Protruding ring; 5645. Clamping jaw; 5646. Notch; 57. Positioning seat; 58. Diagonal tie rod. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] Please see Figures 1 to 9The present invention provides a technical solution: a fully load-bearing bottom frame structure, including a base frame 1, a tail crossbeam assembly 2 fixedly installed on the rear side of the base frame 1, and the tail crossbeam assembly 2 is composed of an upper crossbeam and a lower crossbeam fixedly connected to each other.

[0045] Mounting bracket assemblies 3 are provided on both the left and right sides of the tail beam assembly 2. The right mounting bracket assembly 3 is used to install the water tank, and the left mounting bracket assembly 3 is used to install the compressor.

[0046] A compressor tray 4 is provided between the base frame 1 and the left mounting bracket assembly 3, and a counteractor 5 is provided between the compressor tray 4 and the tail beam assembly 2. When in use, the tail beam assembly 2 is installed at the rear of the base frame 1, the mounting bracket assembly 3 is installed on the left and right sides of the tail beam assembly 2, and the compressor tray 4 is installed on the base frame 1 and the left mounting bracket assembly 3.

[0047] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 9 As shown, the countermeasure 5 includes a reinforcing plate 51 located at the angle between the base frame 1 and the tail beam assembly 2, and the reinforcing plate 51 is fixedly connected to the base frame 1 and the tail beam assembly 2.

[0048] Two sets of clamping plates 52 are fixedly installed on the side wall of the reinforcing plate 51 on the side opposite to the compressor tray 4. Each set of clamping plates 52 consists of two clamping plates 52, and the two sets of clamping plates 52 are located on the upper and lower sides of the reinforcing plate 51 respectively. The two sets of clamping plates 52 are fixedly connected to the tail beam assembly 2.

[0049] A connecting rod 53 is fixedly installed between the left mounting bracket assembly 3 and the base frame 1, and a left seat 54 is fixedly installed on the connecting rod 53. A right seat 55 is fixedly installed on the front side wall of the upper clamping plate 52.

[0050] The left tail of the compressor tray 4 is fixedly connected to the left mounting bracket assembly 3, and the right tail of the compressor tray 4 is clamped inside the upper single clamping plate 52. The left and right sides of the compressor tray 4 are respectively mounted on the left seat 54 and the right seat 55. The reinforcing plate 51 and the clamping plate 52 are mounted on the base frame 1 and the tail beam assembly 2. Finally, the compressor tray 4 is connected to the left seat 54, the right seat 55 and the upper single clamping plate 52.

[0051] The upper single-set clamping plate 52 is provided with a shifting component 56 that cooperates with the compressor tray 4.

[0052] Positioning seats 57 are fixedly installed on both the right side seat 55 and the tail beam assembly 2, and a diagonal tie rod 58 is fixedly connected between the two positioning seats 57. The diagonal tie rod 58 effectively enhances the installation strength between the compressor tray 4 and the tail beam assembly 2. Conversely, when the left side mounting bracket assembly 3 moves away from the base frame 1, that is, when the angle between the left side mounting bracket assembly 3 and the base frame 1 increases and a pulling force is applied to the compressor tray 4, the tail beam assembly 2 can also restrict the right side seat 55 and the compressor tray 4 through the diagonal tie rod 58.

[0053] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 9 As shown, the displacement assembly 56 includes a spring cup 561 fixedly mounted on the upper single clamping plate 52, and the spring cup 561 is located on the lower clamping plate 52 of the clamping plate 52. The spring cup 561 communicates with the inner side of the two clamping plates 52, and a spring 562 is provided inside the spring cup 561. The spring 562 pushes the compressor tray 4 to fit against the upper clamping plate 52 of the clamping plate 52. The spring 562 in the spring cup 561 applies an upward thrust to the compressor tray 4 along the corner. With the deformation of the left mounting bracket assembly 3, the compressor tray 4 can tilt to the left front side in the event of a collision.

[0054] The upper clamping plate 52 of the clamping plate group 52 has a pre-break groove 563 along the front-rear direction. When the rear of the vehicle is hit, the left mounting bracket assembly 3 and the tail beam assembly 2 connected to it are subjected to force and move forward, and the force is transmitted to the clamping plate 52. The upper clamping plate 52 of the single clamping plate group 52 is subjected to force and breaks along the pre-break groove 563.

[0055] Both the left seat 54 and the right seat 55 are equipped with release devices 564 for securing the compressor tray 4.

[0056] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 9 As shown, the release device 564 includes circular grooves 5641 respectively opened on the left side seat 54 and the right side seat 55, and two semi-circular seats 5642 are movably arranged in the circular grooves 5641. The groove wall of the circular groove 5641 is provided with an annular groove 5643. The outer ring of the semi-circular seat 5642 is provided with a convex ring 5644, and the two semi-circular seats 5642 are combined into a circular structure and are rotatably connected in the circular groove 5641 through the convex ring 5644 along the annular groove.

[0057] A clamp 5645 is provided between the two semicircular seats 5642 to cooperate with the compressor tray 4.

[0058] The circular groove 5641 has a notch 5646 on the lower side of the rear to allow the semi-circular seat 5642 to disengage. After the compressor tray 4 is tilted, the tray body first drives the two sets of semi-circular seats 5642 on the left and right sides to deflect along the circular grooves 5641 on both sides along the clamp 5645 until one of the semi-circular seats 5642 rotates to the lower side to align with the notch 5646. The semi-circular seat 5642 disengages from the circular groove 5641 along the notch 5646, so that the front half of the compressor tray 4 loses the constraint of the clamp 5645.

[0059] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 9 As shown, a reinforcing rod is fixedly connected between the connecting rod 53 and the base frame 1. The reinforcing rod is inclined and forms a triangular structure with the connecting rod 53 and the base frame 1, thereby improving the installation stability of the connecting rod 53 and the compressor tray 4 supported by the connecting rod 53.

[0060] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 9 As shown, the connecting rod 53 is connected to the left side seat 54 by a support frame. The support frame controls the alignment of the left side seat 54 with the left side of the compressor tray 4, ensuring that the left side seat 54 can be stably connected to the compressor tray 4.

[0061] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 9 As shown, the clamp 5645 and the compressor tray 4 are provided with interlocking teeth, so that when the compressor tray 4 is fixed in the clamp 5645, the locking stability can be improved by the engagement of the teeth.

[0062] A process for a fully load-bearing base frame structure includes the following steps:

[0063] S1. Install the tail beam assembly 2 at the rear of the base frame 1, and then install the mounting bracket assembly 3 on the left and right sides of the tail beam assembly 2. After installation, install the reinforcing plate 51 and the clamping plate 52 on the base frame 1 and the tail beam assembly 2. Finally, install the compressor tray 4 on the left seat 54, the right seat 55, the upper single clamping plate 52 and the left mounting bracket assembly 3, and then use the diagonal tie rod 58 to connect the right seat 55 to the tail beam assembly 2.

[0064] The S2 and diagonal brace 58 effectively enhance the installation strength between the compressor tray 4 and the tail beam assembly 2. Unlike the direct connection between the compressor tray 4 and the tail beam assembly 2, the diagonal brace 58 provides lateral reinforcement along the right side of the compressor tray 4 via the right side seat 55. Therefore, when the left side mounting bracket assembly 3 moves relative to the base frame 1 (i.e., the angle between the left side mounting bracket assembly 3 and the base frame 1 decreases) and applies pressure to the compressor tray 4, the tail beam assembly 2 can constrain the right side seat 55 and the compressor tray 4 via the diagonal brace 58 to resist the compression caused by the offset of the base frame 1. Conversely, when the left side mounting bracket assembly 3 moves away from the base frame 1 (i.e., the angle between the left side mounting bracket assembly 3 and the base frame 1 increases) and applies tension to the compressor tray 4, the tail beam assembly 2 can also restrict the right side seat 55 and the compressor tray 4 via the diagonal brace 58 to resist the offset of the base frame 1 and the compressor tray 4.

[0065] S3. In this type of mounting structure between the rear crossbeam assembly 2 and the compression tray, when the rear of the vehicle is hit, the left mounting bracket assembly 3 and the part of the rear crossbeam assembly 2 connected to it are subjected to force and moved forward, and the force is transmitted to the clamping plate 52. The upper clamping plate 52 of the upper single clamping plate 52 is subjected to force and breaks along the pre-break groove 563. The corner of the compressor tray 4 relative to the clamping plate 52 is unrestrained. The spring 562 in the spring cup 561 applies an upward thrust to the compressor tray 4 along the corner. Combined with the deformation of the left mounting bracket assembly 3, the compressor tray 4 tilts to the left front side and pushes the compressor mounted on it out of the vehicle body.

[0066] S4. After the collision triggers the tilting of the compressor tray 4, the tray body first drives the two sets of semicircular seats 5642 on the left and right sides to deflect along the circular grooves 5641 on both sides along the clamp 5645 until one of the semicircular seats 5642 rotates to the lower side to align with the notch 5646. The semicircular seat 5642 disengages from the circular groove 5641 along the notch 5646, causing the front half of the compressor tray 4 to lose its constraint. With the upward push of the spring 562, the compressor tray 4 is controlled to fall diagonally forward along its connection point with the left mounting bracket assembly 3.

[0067] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fully load-bearing base frame structure, comprising a base frame (1), characterized in that: The rear side of the base frame (1) is fixedly installed with a tail beam assembly (2), and the tail beam assembly (2) is composed of an upper beam and a lower beam that are fixedly connected to each other. The tail beam assembly (2) is provided with mounting bracket assemblies (3) on both the left and right sides. The mounting bracket assembly (3) on the right side is used to install the water tank, and the mounting bracket assembly (3) on the left side is used to install the compressor. A compressor tray (4) is provided between the base frame (1) and the left mounting bracket assembly (3), and a counteractor (5) is provided between the compressor tray (4) and the tail beam assembly (2). The countermeasure (5) includes a reinforcing plate (51) set at the angle between the base frame (1) and the tail beam assembly (2), and the reinforcing plate (51) is fixedly connected to the base frame (1) and the tail beam assembly (2); Two sets of clamping plates (52) are fixedly installed on the side wall of the reinforcing plate (51) on the side opposite to the compressor tray (4). Each set of clamping plates (52) consists of two clamping plates (52), and the two sets of clamping plates (52) are located on the upper and lower sides of the reinforcing plate (51) respectively. The two sets of clamping plates (52) are fixedly connected to the tail beam assembly (2). A connecting rod (53) is fixedly installed between the mounting bracket assembly (3) on the left and the base frame (1), and a left seat (54) is fixedly installed on the connecting rod (53). A right seat (55) is fixedly installed on the front side wall of the clamp plate (52) on the upper side. The left tail of the compressor tray (4) is fixedly connected to the left mounting bracket assembly (3), and the right tail of the compressor tray (4) is clamped inside the upper single clamping plate (52). The left and right sides of the compressor tray (4) are respectively mounted on the left seat (54) and the right seat (55). The upper single-group clamp (52) is provided with a shifting component (56) that cooperates with the compressor tray (4); Positioning seats (57) are fixedly installed on both the right side seat (55) and the tail crossbeam assembly (2), and a diagonal tie rod (58) is fixedly connected between the two positioning seats (57). The shifting assembly (56) includes a spring cup (561) fixedly mounted on the upper single set of clamping plates (52), and the spring cup (561) is located on the lower clamping plate (52) of the set of clamping plates (52). The spring cup (561) communicates with the inner side of the two clamping plates (52), and a spring (562) is provided inside the spring cup (561). The spring (562) pushes the compressor tray (4) to fit against the upper clamping plate (52) of the set of clamping plates (52). The upper side of the clamping plate (52) of the clamping plate (52) of the group is provided with a pre-cut groove (563) along the front and back direction; Both the left side seat (54) and the right side seat (55) are provided with release devices (564) for fixing the compressor tray (4). The release device (564) includes circular grooves (5641) respectively opened on the left side seat (54) and the right side seat (55), and two semi-circular seats (5642) are movably arranged in the circular grooves (5641). The groove wall of the circular grooves (5641) is provided with an annular groove (5643). The outer ring of the semi-circular seats (5642) is provided with a convex ring (5644). The two semi-circular seats (5642) are combined into a circular structure and are rotatably connected in the circular grooves (5641) through the convex ring (5644) along the annular groove. A clamp (5645) is provided between the two semicircular seats (5642) to cooperate with the compressor tray (4); The circular groove (5641) has a notch (5646) on the lower side of the rear for the semi-circular seat (5642) to disengage.

2. The structure of a fully load-bearing base frame according to claim 1, characterized in that: A reinforcing rod is fixedly connected between the connecting rod (53) and the base frame (1), and the reinforcing rod is inclined to form a triangular structure with the connecting rod (53) and the base frame (1).

3. The structure of a fully load-bearing base frame according to claim 2, characterized in that: The connecting rod (53) is connected to the left side seat (54) by a support frame.

4. The structure of a fully load-bearing bottom frame according to claim 3, characterized in that: The clamp (5645) and the compressor tray (4) are provided with mutually cooperating teeth.

5. The process for manufacturing a fully load-bearing base frame structure according to claim 4 includes the following steps: S1. Install the tail beam assembly (2) at the rear of the base frame (1), and then install the mounting bracket assembly (3) on the left and right sides of the tail beam assembly (2). After installation, install the reinforcing plate (51) and the clamping plate (52) on the base frame (1) and the tail beam assembly (2). Finally, install the compressor tray (4) on the left seat (54), the right seat (55), the upper single clamping plate (52) and the left mounting bracket assembly (3). Then, use the diagonal tie rod (58) to connect the right seat (55) to the tail beam assembly (2). The S2 tie rod (58) effectively enhances the installation strength between the compressor tray (4) and the tail beam assembly (2). Unlike the direct connection between the compressor tray (4) and the tail beam assembly (2), the tie rod (58) is reinforced laterally along the right side of the compressor tray (4) via the right side seat (55). Therefore, when the left side mounting bracket assembly (3) and the base frame (1) move relative to each other, that is, when the angle between the left side mounting bracket assembly (3) and the base frame (1) is reduced and pressure is applied to the compressor tray (4), the tail beam assembly (2) can move through... The diagonal brace (58) constrains the right side seat (55) and compressor tray (4) to resist the compression of the compressor tray (4) caused by the offset of the base frame (1). Conversely, when the left side mounting bracket assembly (3) moves in opposite directions to the base frame (1), that is, when the angle between the left side mounting bracket assembly (3) and the base frame (1) increases and a pulling force is applied to the compressor tray (4), the tail beam assembly (2) can also restrict the right side seat (55) and compressor tray (4) through the diagonal brace (58) to resist the offset of the base frame (1) and compressor tray (4). S3. When the rear of the vehicle is hit by a collision, the left mounting bracket assembly (3) and the rear beam assembly (2) connected to it are partially moved forward by the force and transmitted to the clamp (52). The upper clamp (52) of the upper single clamp (52) is subjected to force and breaks along the pre-break groove (563). The compressor tray (4) loses its constraint at one corner relative to the clamp (52). The spring (562) in the spring cup (561) applies an upward thrust to the compressor tray (4) along the corner. Combined with the deformation of the left mounting bracket assembly (3), the compressor tray (4) tilts to the left front side and pushes the compressor mounted on it out of the vehicle body. S4. After the collision triggers the compressor tray (4) to tilt, the tray body first drives the two sets of semicircular seats (5642) on the left and right sides to deflect along the circular grooves (5641) on both sides along the clamp (5645) until one of the semicircular seats (5642) rotates to the lower side to align with the notch (5646). The semicircular seat (5642) disengages from the circular groove (5641) along the notch (5646), causing the front half of the compressor tray (4) to lose its constraint. With the push of the spring (562), the compressor tray (4) is controlled to fall diagonally forward along its connection point with the left mounting bracket assembly (3).

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