High-pressure-bearing deformation-resistant automobile rear longitudinal beam and machining method thereof
By setting reinforcement components, energy-absorbing box components and support members on the rear longitudinal beam of the car, the problems of insufficient strength and poor energy-absorbing effect of the traditional rear longitudinal beam are solved, and high pressure bearing resistance and good energy-absorbing characteristics are achieved, ensuring the safety of vehicles and passengers.
Patent Information
- Application Number
- CN202411837397.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-03-07
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When facing complex road conditions and collision scenarios, the rear longitudinal beams of traditional cars have insufficient structural strength and poor energy absorption effects, resulting in damage to other parts of the car body and threatening passenger safety.
A high-pressure-bearing and deformation-resistant rear longitudinal beam is designed. By installing reinforcement components, energy-absorbing box components and support on the rear longitudinal beam body, its pressure-bearing ability, deformation-resistant ability and energy-absorbing characteristics are enhanced. The reinforcement assembly connects the reinforcement blocks and ribs of the inner and outer bending surfaces through a connecting groove and a connecting steel bar. The support member includes a bending support plate, a triangular support plate and a convex support plate. The energy-absorbing box assembly includes a buffer spring, a wavy energy-absorbing box body and a honeycomb energy-absorbing block.
It effectively improves the structural strength and energy absorption capacity of the rear longitudinal beam, reduces the occurrence of side curves, and protects the stability of the rear structure of the vehicle and passenger safety.
Smart Images
Figure CN119568274A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of automobiles, in particular to a high-pressure-bearing and deformation-resistant automobile rear longitudinal beam and a processing method thereof. Background Art
[0002] In the structural design of a car, the rear longitudinal beam plays a vital role. It is related to the overall structural strength of the vehicle and the energy absorption performance in collisions and other situations, and directly affects the safety of the occupants and the degree of damage to the vehicle.
[0003] With the increasing requirements for vehicle safety, traditional rear longitudinal beam structures often expose problems such as insufficient structural strength and poor energy absorption when facing complex road conditions and possible collision scenarios. For example, when the rear of the vehicle is hit, the rear longitudinal beam is prone to bending and deformation, and cannot effectively disperse and absorb the impact energy, which may cause damage to other parts of the vehicle body and endanger the safety of passengers in the vehicle. In order to better improve the comprehensive performance of the rear longitudinal beam and meet increasingly stringent safety standards, it is necessary to optimize and improve the structure of the rear longitudinal beam so that it has sufficient pressure-bearing and deformation-resistant capabilities while also having good energy absorption characteristics. Summary of the invention
[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: A high pressure-bearing and deformation-resistant automobile rear longitudinal beam, comprising: A rear longitudinal beam body, wherein a flange is provided at an edge of the rear longitudinal beam body, and a through hole is provided on an outer surface of the flange, so that the flange is convenient for connection and fixation with other vehicle parts, and is helpful for assembly and integration of the entire vehicle structure, a third mounting plate is fixedly connected to one end of the rear longitudinal beam body, and a first support member, a second support member and a third support member are fixedly installed in sequence inside the rear longitudinal beam body; An energy absorption box assembly, wherein the energy absorption box assembly is fixedly mounted on an end of the rear longitudinal beam body away from the third mounting plate, and the energy absorption box assembly is arranged at the rear of the vehicle to absorb the impact force generated when the vehicle is hit; A reinforcement component, which is fixedly mounted on the surface of the rear longitudinal beam body 1 and is used to improve the pressure bearing capacity and deformation resistance of the rear longitudinal beam; Wherein, the reinforcing assembly comprises a connecting groove, the connecting groove is provided on the outer surface of the rear longitudinal beam body, a connecting steel bar is arranged inside the connecting groove, a reinforcing block and a reinforcing rib are respectively fixedly installed at both ends of the connecting steel bar, the reinforcing block is fixedly installed on the inner bending surface of the rear longitudinal beam body, the reinforcing rib is fixedly installed on the outer bending surface of the rear longitudinal beam body, and a welding hole is provided on the outer surface of the reinforcing block; When there is a bending tendency at the side of the rear longitudinal beam body, the reinforcement block arranged on the inner bending surface of the rear longitudinal beam body pulls the reinforcement ribs through the connecting steel bars. The reinforcement ribs are evenly distributed on the outer surface of the rear longitudinal beam body. When the top of the rear longitudinal beam body is subjected to pressure so that the outer side surface has a bending deformation tendency, the reinforcement block on the inner bending surface is first subjected to force, and then the tension is transmitted to the reinforcement ribs on the outer bending surface through the connecting steel bars connected to it. The reinforcement ribs will generate tension on the outer bending surface based on their own strength and the connection with the rear longitudinal beam body, thereby limiting the bending deformation of the side of the rear longitudinal beam body and ensuring the overall shape and structural strength of the rear longitudinal beam.
[0005] Preferably, the first supporting member includes a first fixing plate, which is fixedly mounted on both sides of the inner bending surface of the rear longitudinal beam body, and a bending supporting plate is fixedly connected between the first fixing plates. The bending supporting plate enhances the rigidity of the inner bending surface of the rear longitudinal beam body through its own structural strength, and can effectively resist the bending deformation tendency of this part when subjected to longitudinal or lateral force, thereby improving the overall bending resistance of the rear longitudinal beam, and when the vehicle is bumpy, the elastic deformation of the bending supporting plate itself can provide a certain buffer for the vehicle.
[0006] Preferably, the second support member includes a second fixing plate, which is fixedly mounted on one side of the inner bending surface of the rear longitudinal beam body, and a triangular support plate is fixedly mounted on the outer surface of the second fixing plate, and the triangular support plate is fixedly mounted on the side of the inner bending surface of the rear longitudinal beam body away from the second fixing plate. The triangular support plate has good stability and load-bearing capacity, and can enhance the structural strength of the location.
[0007] Preferably, the cross-section of the triangular support plate is a right triangle, and strip reinforcement ribs are fixedly installed on the outer surface of the triangular support plate, and the strip reinforcement ribs are arranged on the surface where the hypotenuse of the triangular support plate is located, and the strip reinforcement ribs further increase the structural strength of the triangular support plate.
[0008] Preferably, the third support member includes a convex-shaped support plate, which is fixedly installed on the inner bending surface of the rear longitudinal beam body. Due to its convex-shaped structure, the convex-shaped support plate can better fit the inner bending surface, increase the contact area, and improve the supporting effect. A reinforcing plate is fixedly installed inside the convex-shaped support plate, and cross reinforcing ribs are fixedly installed on the outer surface of the convex-shaped support plate. The cross reinforcing ribs can enhance the stability of the convex-shaped support plate when subjected to forces in different directions.
[0009] Preferably, the raised end of the convex-shaped support plate is extruded and fitted with the reinforcement block. This matching relationship enables the third support member to cooperate with the reinforcement assembly to enhance the coordinated force-bearing performance of the overall structure of the rear longitudinal beam and improve the ability of the rear longitudinal beam to resist deformation. The number of the reinforcement plates is two, and the two reinforcement plates are symmetrically arranged inside the convex-shaped support plate. The reinforcement plate further improves the bending resistance, compression resistance and other capabilities of the convex-shaped support plate.
[0010] Preferably, the energy absorption box assembly includes a first mounting plate, the first mounting plate is fixedly connected to the end of the rear longitudinal beam body, the outer surface of the first mounting plate is fixedly connected to a shell, the end of the shell away from the first mounting plate is fixedly connected to a second mounting plate, and the outer surface of the shell is fixedly installed with a mounting frame, which is used to connect other related parts of the vehicle.
[0011] Preferably, a wavy energy absorbing box body and a buffer spring are fixedly connected between the shell and the second mounting plate respectively, the buffer spring is arranged at the four corners of the inner cavity of the shell, and the wavy energy absorbing box body is arranged in the middle of the inner cavity of the shell. When the vehicle collides, the buffer spring can absorb a part of the impact energy through its own elastic deformation, thereby playing a role of preliminary buffering. The wavy energy absorbing box body utilizes its special wavy structure, and can gradually absorb the impact energy through its own deformation, extrusion, etc. when subjected to force. A fixed box and a cylindrical energy absorbing block are fixedly installed inside the wavy energy absorbing box body.
[0012] Preferably, a honeycomb energy-absorbing block is fixedly installed inside the fixing box. The honeycomb energy-absorbing block can absorb energy through the deformation process of multiple small units when subjected to force due to its unique honeycomb structure, thereby increasing the overall energy absorption efficiency. The cross-section of the cylindrical energy-absorbing block is similar to a spider web. This special structure enables it to produce complex deformations when subjected to force, thereby converting the impact energy into its own deformation energy for absorption.
[0013] A method for processing a high-pressure-bearing and anti-deformation automobile rear longitudinal beam comprises the following steps: S1. Cut out a low-carbon alloy steel plate for making a rear longitudinal beam body, and perform a shot blasting operation on the cut low-carbon alloy steel plate; S2. Punch the rear longitudinal beam body to form its outer contour, and then grind the surface to remove burrs and make it flat and smooth; S3. Drill holes to be welded on corresponding parts of the rear longitudinal beam body, and install the reinforcement components and support members to corresponding positions of the rear longitudinal beam body by welding or other methods; S4. Weld the energy absorption box assembly to the end of the rear longitudinal beam body through the first mounting plate, and finally polish and spray anti-corrosion oil on the entire surface of the installed rear longitudinal beam.
[0014] The present invention provides a high pressure-bearing and deformation-resistant automobile rear longitudinal beam, which has the following beneficial effects: 1. The high pressure-bearing and deformation-resistant automobile rear longitudinal beam is provided with a reinforcement component, and the reinforcement component connects the reinforcement block on the inner bending surface and the reinforcement rib on the outer bending surface through a connecting steel bar in a connecting groove. When the side surface of the rear longitudinal beam body shows a bending tendency, the reinforcement block can pull the reinforcement rib with the help of the connecting steel bar. By utilizing this internal and external synergistic effect, the force from the side is effectively resisted, the occurrence of lateral bending is reduced, and the pressure-bearing capacity of the rear longitudinal beam is improved.
[0015] 2. The high-pressure-bearing and deformation-resistant automobile rear longitudinal beam, through the setting of the support parts, the first fixed plate of the first support part and the bent support plate can cooperate to reinforce the inner bent surface, the triangular support plate and strip reinforcement ribs of the second support part enhance the strength of the corresponding parts, and the convex support plate, reinforcement plate and cross reinforcement ribs of the third support part further strengthen the inner bent surface, which greatly improves the overall structural strength of the rear longitudinal beam body, making it less likely to deform and damage when carrying daily loads and encountering external forces such as collisions, thereby ensuring the stability of the rear structure of the vehicle.
[0016] 3. The high-pressure-bearing and deformation-resistant automobile rear longitudinal beam is provided with an energy absorption box assembly. The inner cavity of the shell in the energy absorption box assembly is provided with a buffer spring and a wave-shaped energy absorption box body. There are also various energy absorption structures such as a fixed box, a honeycomb energy absorption block, and a cylindrical energy absorption block inside the energy absorption box body. When a vehicle collides, these structures can gradually absorb and consume the impact energy through elastic deformation, collapse deformation, etc., to buffer the impact on other parts of the vehicle body and passengers in the vehicle, and better protect the overall structure of the vehicle and the safety of personnel.
[0017] Fourth, the high pressure-bearing and deformation-resistant automobile rear longitudinal beam has a flange and a mounting plate. The outer surface of the flange has a through hole, and a third mounting plate is provided at one end of the rear longitudinal beam body. These structures facilitate the connection and fixation of the rear longitudinal beam body with other vehicle structures to ensure accurate installation.
[0018] 5. The high-pressure-bearing and anti-deformation automobile rear longitudinal beam can obtain a relatively uniform appearance on the surface of the rear longitudinal beam body through shot blasting, remove surface flaws and unevenness, make the rear longitudinal beam look more beautiful, and after the vehicle is assembled as a whole, it also helps to improve the overall texture of the vehicle appearance; The shot blasting operation will introduce a certain amount of residual compressive stress on the surface of the rear longitudinal beam. This residual compressive stress can offset part of the tensile stress borne by the rear longitudinal beam when the vehicle is running, delay the initiation of cracks, effectively enhance the fatigue strength of the rear longitudinal beam, make the vehicle less prone to fatigue damage, and improve the overall structural reliability. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a schematic diagram of the external structure of the present invention; Figure 2 This is a schematic diagram of the appearance of the present invention; Figure 3 This is a schematic diagram of the structure of the reinforcement assembly of the present invention; Figure 4 It is a schematic diagram of the rear longitudinal beam body structure of the present invention; Figure 5 This is a schematic diagram of the structure of the first support member of the present invention; Figure 6 This is a schematic diagram of the structure of the second support member of the present invention; Figure 7 This is a schematic diagram of the structure of the third support member of the present invention; Figure 8 It is a schematic diagram of the structure of the energy absorption box assembly of the present invention; Fig. 9 It is a partial cross-sectional view of the energy absorption box assembly of the present invention; Fig.10 This is a schematic diagram of the internal structure of the fixing box of the present invention; Fig.11 It is a schematic diagram of the processing method of the present invention.
[0020] In the figure: 1. rear longitudinal beam body; 2. energy absorption box assembly; 21. first mounting plate; 22. shell; 23. mounting frame; 24. second mounting plate; 25. wavy energy absorption box body; 26. buffer spring; 27. fixing box; 28. cylindrical energy absorption block; 29. honeycomb energy absorption block; 3. first support member; 31. bent support plate; 32. first fixing plate; 4. second support member; 41. triangular support plate; 42. strip reinforcement rib; 43. second fixing plate; 5. third support member; 51. convex support plate; 52. reinforcement plate; 53. cross reinforcement rib; 6. reinforcement assembly; 61. connecting groove; 62. reinforcement block; 63. reinforcement rib; 64. connecting steel bar; 65. welding hole; 7. flange; 8. through hole; 9. third mounting plate. DETAILED DESCRIPTION
[0021] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.
[0022] The first embodiment, as Figures 1 to 7 As shown, the present invention provides a technical solution: a high pressure-bearing and deformation-resistant automobile rear longitudinal beam, comprising: A rear longitudinal beam body 1, wherein a flange 7 is provided at the edge of the rear longitudinal beam body 1, and a through hole 8 is provided on the outer surface of the flange 7. The flange 7 is convenient for connection and fixation with other vehicle parts, and is helpful for the assembly and integration of the entire vehicle structure. A third mounting plate 9 is fixedly connected to one end of the rear longitudinal beam body 1; A reinforcement component 6, which is fixedly mounted on the surface of the rear longitudinal beam body 1, and is used to improve the pressure bearing capacity and anti-deformation capacity of the rear longitudinal beam; The reinforcing component 6 includes a connecting groove 61, which is provided on the outer surface of the rear longitudinal beam body 1, and a connecting steel bar 64 is provided inside the connecting groove 61. A reinforcing block 62 and a reinforcing rib 63 are respectively fixedly installed at both ends of the connecting steel bar 64. The reinforcing block 62 is fixedly installed on the inner bending surface of the rear longitudinal beam body 1, and the reinforcing rib 63 is fixedly installed on the outer bending surface of the rear longitudinal beam body 1. A welding hole 65 is provided on the outer surface of the reinforcing block 62. When there is a bending tendency at the side of the rear longitudinal beam body 1, the reinforcing block 62 arranged on the inner bending surface of the rear longitudinal beam body 1 pulls the reinforcing rib 63 through the connecting steel bar 64. The reinforcing rib 63 is evenly distributed on the outer surface of the rear longitudinal beam body 1. When the top of the rear longitudinal beam body 1 is subjected to pressure so that the outer side surface has a bending deformation tendency, the reinforcing block 62 on the inner bending surface is first subjected to force, and then the tension is transmitted to the reinforcing rib 63 on the outer bending surface through the connecting steel bar 64 connected thereto. The reinforcing rib 63 will generate tension on the outer bending surface based on its own strength and the connection with the rear longitudinal beam body 1, thereby limiting the bending deformation of the side of the rear longitudinal beam body 1 and ensuring the overall shape and structural strength of the rear longitudinal beam.
[0023] The second embodiment is based on the first embodiment. Figures 1 to 4 As shown, the first support member 3, the second support member 4 and the third support member 5 are fixedly installed in sequence inside the rear longitudinal beam body 1; The first support member 3 includes a first fixing plate 32, which is fixedly installed on both sides of the inner bending surface of the rear longitudinal beam body 1, and a bending support plate 31 is fixedly connected between the first fixing plates 32. The bending support plate 31 enhances the rigidity of the inner bending surface of the rear longitudinal beam body 1 through its own structural strength, and can effectively resist the bending deformation tendency of this part when subjected to longitudinal or lateral force, thereby improving the overall bending resistance of the rear longitudinal beam. When the vehicle is bumpy, the elastic deformation of the bending support plate 31 itself can provide a certain buffer for the vehicle.
[0024] The second support member 4 includes a second fixing plate 43, which is fixedly installed on one side of the inner bending surface of the rear longitudinal beam body 1. A triangular support plate 41 is fixedly installed on the outer surface of the second fixing plate 43. The triangular support plate 41 is fixedly installed on the side of the inner bending surface of the rear longitudinal beam body 1 away from the second fixing plate 43. The triangular support plate 41 has good stability and load-bearing capacity, and can enhance the structural strength of the location.
[0025] The cross section of the triangular support plate 41 is a right triangle. A strip reinforcement rib 42 is fixedly installed on the outer surface of the triangular support plate 41, and the strip reinforcement rib 42 is arranged on the surface where the hypotenuse of the triangular support plate 41 is located. The strip reinforcement rib 42 further increases the structural strength of the triangular support plate 41.
[0026] The third support member 5 includes a convex-shaped support plate 51, which is fixedly installed on the inner bending surface of the rear longitudinal beam body 1. The convex-shaped support plate 51 can better fit the inner bending surface due to its convex-shaped structure, increase the contact area, and improve the supporting effect. A reinforcing plate 52 is fixedly installed inside the convex-shaped support plate 51, and a cross reinforcing rib 53 is fixedly installed on the outer surface of the convex-shaped support plate 51. The cross reinforcing rib 53 can enhance the stability of the convex-shaped support plate 51 when subjected to forces in different directions.
[0027] The raised end of the convex-shaped support plate 51 is squeezed and fitted with the reinforcement block 62. This matching relationship enables the third support member 5 to cooperate with the reinforcement component 6 to enhance the coordinated force-bearing performance of the overall structure of the rear longitudinal beam and improve the ability of the rear longitudinal beam to resist deformation. There are two reinforcing plates 52, and the two reinforcing plates 52 are symmetrically arranged inside the convex-shaped support plate 51. The reinforcing plates 52 further improve the bending resistance, compression resistance and other capabilities of the convex-shaped support plate 51.
[0028] The third embodiment is based on the first and second embodiments. Figures 1 to 11 As shown, the energy absorption box assembly 2 is fixedly mounted on one end of the rear longitudinal beam body 1 away from the third mounting plate 9, and is used to absorb the impact force generated when the vehicle is hit; The energy absorption box assembly 2 includes a first mounting plate 21, which is fixedly connected to the end of the rear longitudinal beam body 1. A shell 22 is fixedly connected to the outer surface of the first mounting plate 21, and a second mounting plate 24 is fixedly connected to one end of the shell 22 away from the first mounting plate 21. A mounting frame 23 is fixedly installed on the outer surface of the shell 22, and the mounting frame 23 is used to connect other related parts of the vehicle.
[0029] A wavy energy absorbing box body 25 and a buffer spring 26 are fixedly connected between the shell body 22 and the second mounting plate 24, respectively. The buffer spring 26 is arranged at the four corners of the inner cavity of the shell body 22, and the wavy energy absorbing box body 25 is arranged in the middle of the inner cavity of the shell body 22. When the vehicle collides, the buffer spring 26 can absorb part of the impact energy through its own elastic deformation, thereby playing a preliminary buffering role. The wavy energy absorbing box body 25 utilizes its special wavy structure to gradually absorb the impact energy through its own deformation, extrusion, etc. when subjected to force. A fixed box 27 and a cylindrical energy absorbing block 28 are fixedly installed inside the wavy energy absorbing box body 25.
[0030] A honeycomb energy-absorbing block 29 is fixedly installed inside the fixed box 27. The honeycomb energy-absorbing block 29 can absorb energy through the deformation process of multiple small units when subjected to force due to its unique honeycomb structure, thereby increasing the overall energy absorption efficiency. The cross-section of the cylindrical energy-absorbing block 28 is similar to a spider web. This special structure enables it to produce complex deformations when subjected to force, thereby converting the impact energy into its own deformation energy for absorption.
[0031] A method for processing a high-pressure-bearing and anti-deformation automobile rear longitudinal beam comprises the following steps: S1, cutting out a low-carbon alloy steel plate for making the rear longitudinal beam body 1, and performing a shot blasting operation on the cut low-carbon alloy steel plate; S2, stamping the rear longitudinal beam body 1 to form its outer contour, and then grinding the surface to remove burrs and make it flat and smooth; S3, drilling holes to be welded on corresponding parts of the rear longitudinal beam body 1, and installing the reinforcing assembly 6 and the supporting member to corresponding positions of the rear longitudinal beam body 1 by welding or other methods; S4. Weld the energy absorption box assembly 2 to the end of the rear longitudinal beam body 1 through the first mounting plate 21. Finally, polish the entire surface of the installed rear longitudinal beam and spray anti-corrosion oil.
[0032] When in use, the rear longitudinal beam body 1 reasonably disperses the force transmitted from the road through the tires, suspension, etc. to maintain the stability of its own structure. When encountering a collision, the impact force first acts on the rear longitudinal beam body 1, which transmits the force to the first support member 3, the second support member 4, the third support member 5 and the reinforcement component 6 inside according to the direction and magnitude of the force. The bending support plate 31 can effectively improve the overall bending resistance of the rear longitudinal beam by enhancing the rigidity of the inner bending surface of the rear longitudinal beam body 1 through its own structural strength. When the rear longitudinal beam body 1 is subjected to external force, the force is transmitted to the inner bending surface, and the bending support plate 31 will share the force and evenly distribute the force to a larger area, thereby ensuring the stability of the inner bending surface structure of the rear longitudinal beam and maintaining the overall shape of the rear longitudinal beam from being destroyed. When the vehicle is bumpy, the elastic deformation of the bending support plate 31 itself can provide a certain buffer for the vehicle. The triangular support plate 41 and the convex support plate 51 rely on their own structure and the strengthening effect of the strip reinforcement ribs 42, the reinforcement plate 52 and the cross reinforcement ribs 53 to cooperate with the first support member 3 to resist external forces and ensure the structural integrity of this area of the rear longitudinal beam. When there is a tendency of bending deformation, the reinforcement block 62 of the inner bending surface is first subjected to force, and then the tensile force is transmitted to the reinforcement rib 63 of the outer bending surface through the connecting steel bar 64 connected thereto. The reinforcement rib 63 will provide support force to the outer bending surface based on its own strength and connection with the rear longitudinal beam body 1, limit the bending deformation of the side of the rear longitudinal beam body 1, and ensure the overall shape and structural strength of the rear longitudinal beam; When a collision occurs at the rear end of the vehicle and the impact force is transmitted to the energy absorbing box assembly 2, the shell 22 first bears the external force and transmits it to the internal structure, the buffer spring 26 first undergoes elastic deformation to absorb part of the energy, and then the wavy energy absorbing box body 25 begins to deform and squeeze, and the fixed box 27 and the cylindrical energy absorbing block 28 inside it also participate in the energy absorbing process simultaneously. The honeycomb energy absorbing block 29 uses its own structural characteristics to continuously absorb energy. Through the synergistic effect of these energy absorbing structures, the energy generated by the collision is gradually absorbed, converted and consumed, reducing the impact force subsequently transmitted to other parts of the vehicle and inside the vehicle, thereby protecting the safety of the vehicle and personnel.
[0033] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.
Claims
1. A high pressure-bearing and deformation-resistant automobile rear longitudinal beam, characterized in that: include: A rear longitudinal beam body (1), wherein a flange (7) is provided at an edge of the rear longitudinal beam body (1), a through hole (8) is provided on an outer surface of the flange (7), a third mounting plate (9) is fixedly connected to one end of the rear longitudinal beam body (1), and a first support member (3), a second support member (4) and a third support member (5) are fixedly mounted in sequence inside the rear longitudinal beam body (1); An energy absorption box assembly (2), the energy absorption box assembly (2) being fixedly mounted on an end of the rear longitudinal beam body (1) away from the third mounting plate (9); A reinforcing component (6), wherein the reinforcing component (6) is fixedly mounted on the surface of the rear longitudinal beam body (1); The reinforcing component (6) comprises a connecting groove (61), the connecting groove (61) being formed on the outer surface of the rear longitudinal beam body (1), a connecting steel bar (64) being provided inside the connecting groove (61), a reinforcing block (62) and a reinforcing rib (63) being fixedly mounted on both ends of the connecting steel bar (64), the reinforcing block (62) being fixedly mounted on the inner bending surface of the rear longitudinal beam body (1), the reinforcing rib (63) being fixedly mounted on the outer bending surface of the rear longitudinal beam body (1), and a welding hole (65) being formed on the outer surface of the reinforcing block (62).
2. The high pressure-bearing and deformation-resistant automobile rear longitudinal beam according to claim 1, characterized in that: The first support member (3) comprises a first fixing plate (32), the first fixing plate (32) being fixedly mounted on two sides of the inner bending surface of the rear longitudinal beam body (1), and a bent support plate (31) being fixedly connected between the first fixing plates (32).
3. The high pressure-bearing and deformation-resistant automobile rear longitudinal beam according to claim 2, characterized in that: The second support member (4) comprises a second fixing plate (43), a triangular support plate (41) being fixedly mounted on the outer surface of the second fixing plate (43), and the triangular support plate (41) being fixedly mounted on a side of the inner bending surface of the rear longitudinal beam body (1) away from the second fixing plate (43).
4. The high pressure-bearing and deformation-resistant automobile rear longitudinal beam according to claim 3, characterized in that: The cross section of the triangular support plate (41) is a right triangle, and a strip reinforcement rib (42) is fixedly mounted on the outer surface of the triangular support plate (41), and the strip reinforcement rib (42) is arranged on the surface where the hypotenuse of the triangular support plate (41) is located.
5. The high pressure-bearing and deformation-resistant automobile rear longitudinal beam according to claim 4, characterized in that: The third support member (5) comprises a convex-shaped support plate (51), the convex-shaped support plate (51) being fixedly mounted on the inner bending surface of the rear longitudinal beam body (1), a reinforcing plate (52) being fixedly mounted inside the convex-shaped support plate (51), and a cross reinforcing rib (53) being fixedly mounted on the outer surface of the convex-shaped support plate (51).
6. The high pressure-bearing and deformation-resistant automobile rear longitudinal beam according to claim 5, characterized in that: The raised end of the convex-shaped support plate (51) is pressed and matched with the reinforcing block (62), the number of the reinforcing plates (52) is two, and the two reinforcing plates (52) are symmetrically arranged inside the convex-shaped support plate (51).
7. The high pressure-bearing and deformation-resistant automobile rear longitudinal beam according to claim 6, characterized in that: The energy absorption box assembly (2) comprises a first mounting plate (21), the first mounting plate (21) being fixedly connected to an end of a rear longitudinal beam body (1), a shell (22) being fixedly connected to an outer surface of the first mounting plate (21), a second mounting plate (24) being fixedly connected to an end of the shell (22) away from the first mounting plate (21), and a mounting frame (23) being fixedly mounted to an outer surface of the shell (22).
8. The high pressure-bearing and deformation-resistant automobile rear longitudinal beam according to claim 7, characterized in that: A wavy energy absorbing box body (25) and a buffer spring (26) are respectively fixedly connected between the shell (22) and the second mounting plate (24); the buffer spring (26) is arranged at the four corners of the inner cavity of the shell (22); the wavy energy absorbing box body (25) is arranged in the middle of the inner cavity of the shell (22); and a fixing box (27) and a cylindrical energy absorbing block (28) are fixedly installed inside the wavy energy absorbing box body (25).
9. The high pressure-bearing and deformation-resistant automobile rear longitudinal beam according to claim 8, characterized in that: A honeycomb energy absorbing block (29) is fixedly installed inside the fixing box (27).
10. According to the high pressure-bearing and anti-deformation automobile rear longitudinal beam of claim 9, a high pressure-bearing and anti-deformation automobile rear longitudinal beam processing method is proposed, characterized in that: The following steps are involved: S1, cutting out a low-carbon alloy steel plate for making a rear longitudinal beam body (1), and subjecting the cut low-carbon alloy steel plate to a shot blasting operation; S2, stamping the rear longitudinal beam body (1) to form its outer contour, and then grinding the surface to remove burrs and make it flat and smooth; S3, drilling holes to be welded on corresponding parts of the rear longitudinal beam body (1), and installing the reinforcing component (6) and the supporting member to corresponding positions of the rear longitudinal beam body (1) by welding or other methods; S4. The energy absorption box assembly (2) is welded to the end of the rear longitudinal beam body (1) through the first mounting plate (21), and finally the entire surface of the rear longitudinal beam after installation is polished and sprayed with anti-corrosion oil.