A frame assembly

Abstract

The utility model provides a kind of frame assembly, its core is at, by the front crossbeam, first left and right longitudinal beam, oval ring beam component, second left and right longitudinal beam, reinforcing beam, crossbeam component, third left and right longitudinal beam and tail crossbeam are sequentially welded, and a complete rigid frame is constructed.The layout and oval ring beam joint action, significantly improve the overall structural strength of frame, torsional performance and carrying capacity.The mounting seat of crossbeam component, tail crossbeam and lifting support and other key stress points are all using integrated casting structure and arranging reinforcing rib reasonably, avoid the stress concentration problem of traditional plate welding structure at weld from root, greatly enhance the reliability and durability of frame under harsh working conditions.

Description

Technical Field

[0001] This utility model relates to a vehicle frame assembly and belongs to the field of engineering machinery technology. Background Technology

[0002] Wide-body dump trucks are key equipment used in open-pit mines and large-scale construction projects for transporting materials such as ore and earth. Their working environment is extremely harsh, often requiring them to travel fully loaded on rugged mining roads, thus placing extremely high demands on the reliability and durability of the entire vehicle. The chassis, as the load-bearing base and frame of the entire vehicle, directly determines its uptime and service life.

[0003] Currently, the chassis of wide-body dump trucks in the industry generally adopts a manufacturing process of sheet metal welding. However, this traditional structure has an inherent and difficult-to-overcome defect: in critical areas subjected to extremely harsh stresses, such as the suspension cylinder supports, the connection between the crossbeams and longitudinal beams at the suspension cylinder supports, the tie rod mounting supports, the cargo box tipping supports, and the lifting supports, a large number of welds are unavoidable. The mechanical properties of the weld area itself are lower than those of the base material, and it is difficult to completely avoid microscopic defects such as incomplete fusion, porosity, and slag inclusions during the welding process. These factors all make the welds a weak link in the chassis structure.

[0004] Under continuous heavy loads, strong torsional forces, and impact loads, stress easily concentrates at these weak weld points, eventually leading to fatigue cracking of the chassis. This cracking problem not only incurs high repair costs but also causes vehicles to be taken out of service, severely impacting construction efficiency and operational effectiveness.

[0005] Therefore, there is an urgent need in this field for a new type of chassis assembly solution that can fundamentally solve the problem of easy cracking in key stress-bearing parts of traditional plate-welded chassis due to stress concentration in welds, thereby significantly improving the overall reliability and service life of the chassis. Summary of the Invention

[0006] Purpose of the invention: In view of the shortcomings of the prior art, this utility model provides a frame assembly to solve the technical problems mentioned in the background art.

[0007] Technical solution: A vehicle frame assembly, characterized in that it includes a front crossbeam, a first right longitudinal beam, a first left longitudinal beam, a ring beam assembly, a second right longitudinal beam, a second left longitudinal beam, a reinforcing beam, a crossbeam assembly, a third right longitudinal beam, a third left longitudinal beam, and a rear crossbeam. The first right longitudinal beam and the first left longitudinal beam are symmetrical components, and their front ends are welded together with the front crossbeam. A front axle push-pull rod mounting part is welded to the lower side of the first right longitudinal beam and the first left longitudinal beam. A middle and rear axle push-pull rod mounting seat is welded to the lower side of the third right longitudinal beam and the third left longitudinal beam. The ring beam assembly has its front left and right ends welded to the rear ends of the first left longitudinal beam and the first right longitudinal beam, respectively; the front ends of the second right longitudinal beam and the second left longitudinal beam are welded to the rear ends of the ring beam assembly; the left and right ends of the reinforcing beam are welded to the second right longitudinal beam and the second left longitudinal beam; the front end of the crossbeam assembly is welded to the rear ends of the second right longitudinal beam and the second left longitudinal beam; the front ends of the third right longitudinal beam and the third left longitudinal beam are welded to the rear ends of the crossbeam assembly; and the front end of the tail crossbeam is welded to the rear ends of the third right longitudinal beam and the third left longitudinal beam. The ring beam assembly is formed by sequentially welding the right front suspension cylinder mounting base, the upper crossbeam welding assembly, the left front suspension cylinder mounting base, and the first crossbar mounting base. After welding, the ring beam assembly has an elliptical structure, which improves the overall structural strength of the ring beam.

[0008] This invention designs the vehicle frame assembly as including a front crossbeam, a first right longitudinal beam, a first left longitudinal beam, a ring beam assembly, a second right longitudinal beam, a second left longitudinal beam, a reinforcing beam, a crossbeam assembly, a third right longitudinal beam, a third left longitudinal beam, and a rear crossbeam, all connected by welding, thus constructing a complete load-bearing frame. In particular, the ring beam assembly, after welding, forms an elliptical structure. This design significantly improves the overall structural strength of the ring beam assembly, thereby enhancing the torsional resistance and load-bearing capacity of the vehicle frame assembly, fundamentally improving the reliability of the entire vehicle.

[0009] The right front suspension cylinder mounting base, the upper crossbeam welding assembly, the left front suspension cylinder mounting base, and the first tie rod mounting base are all integrally cast. The right front suspension cylinder mounting base and the left front suspension cylinder mounting base are symmetrical parts with the same structure. The right front suspension cylinder mounting base or the left front suspension cylinder mounting base is provided with reinforcing ribs A, B and C. Reinforcing ribs B and C are provided, and reinforcing rib A is provided to cover one side of the cylinder mounting base. Reinforcing ribs B and C are provided in groups at the front and rear ends of one side of the cylinder mounting base, and are symmetrically arranged with reinforcing ribs B and C on the other side. Reinforcing rib A and the reinforcing ribs B and C on both sides are integrally cast. Two reinforcing ribs D are provided inside either the right front suspension cylinder mounting base or the left front suspension cylinder mounting base.

[0010] By integrally casting the right front suspension cylinder mounting base, the upper crossbeam welding assembly, the left front suspension cylinder mounting base, and the first tie rod mounting base, and by providing reinforcing ribs A, B, C, and D on either the right or left front suspension cylinder mounting base, the load transmitted by the suspension cylinder is effectively transferred and distributed across the ring beam assembly body, preventing stress concentration. Simultaneously, reinforcing rib D significantly increases the lateral strength of the support to absorb lateral loads, improves the forming stability of the casting, and reduces the difficulty of the casting process.

[0011] The upper and lower ends of any of the right front suspension cylinder mounting seats or left front suspension cylinder mounting seats are respectively provided with joint A and joint B at the connection points with the upper crossbeam welding assembly and the first crossbar mounting seat. The joint A and joint B are respectively inserted into the ends of the upper crossbeam welding assembly and the first crossbar mounting seat, and serve as welding backing plates during welding.

[0012] By setting the joint A and joint B at the upper and lower ends of the right front suspension cylinder mounting seat or the left front suspension cylinder mounting seat, respectively, and inserting them into the upper crossbeam welding assembly and the first tie rod mounting seat, they serve as welding backing plates during welding. This design, benefiting from the casting process, ensures the consistency and integrity of the weld, improves welding quality, and optimizes the weld placement in a location with lower stress, thereby preventing weld cracking due to excessive stress and improving reliability.

[0013] A reinforcing rib E is provided between the horizontal tie rod mounting part of the first horizontal tie rod mounting base and the base body of the first horizontal tie rod mounting base.

[0014] The reinforcing rib E is provided between the tie rod mounting part of the first tie rod mounting base and the base body of the first tie rod mounting base, which directly and effectively improves the structural strength of the first tie rod mounting base body, enabling it to withstand and transmit complex loads from the tie rod.

[0015] The crossbeam assembly includes a right suspension cylinder mounting base for the middle bridge, a crossbeam, and a left suspension cylinder mounting base for the middle bridge, which are welded together in sequence. Both the right suspension cylinder mounting base and the left suspension cylinder mounting base for the middle bridge are cast. The right suspension cylinder mounting base and the left suspension cylinder mounting base for the middle bridge are symmetrically arranged and have the same structure. The right suspension cylinder mounting base or the left suspension cylinder mounting base of the middle bridge is provided with reinforcing ribs F, G and H. The reinforcing rib F covers one side of the cylinder mounting base. The reinforcing ribs G and H are arranged in groups at the front and rear ends of one side of the cylinder mounting base, symmetrically arranged with the reinforcing ribs G and H on the other side. The reinforcing rib F and the reinforcing ribs G and H on both sides are integrally cast. The reinforcing ribs G on both sides are arranged in a trumpet shape. A reinforcing rib I is provided in the middle of either the right suspension cylinder mounting base or the left suspension cylinder mounting base of the middle bridge.

[0016] The right and left suspension cylinder mounting seats of the middle bridge in the crossbeam assembly are cast in shape. By incorporating reinforcing ribs F, G, H, and I, especially the flared-mouth-shaped reinforcing rib G, the load transmitted by the suspension cylinders is better distributed across the support body, effectively preventing stress concentration. This integrally cast rib design overcomes the inherent defect of traditional plate-welded structures in achieving a smooth stress transition, significantly improving the stress distribution in critical areas.

[0017] A cast cylinder is provided through any of the middle bridge right suspension cylinder mounting seats or middle bridge left suspension cylinder mounting seats, and a cast arc is provided at the junction with the middle bridge right suspension cylinder mounting seat or middle bridge left suspension cylinder mounting seat near the inner side. The cast cylinders on both sides are welded and fixed to the crossbeam at both ends. The ends of the cast cylinders on both sides are respectively provided with joint C and joint D. During welding, joint C and joint D are embedded into the ends of the crossbeam as welding backing plates.

[0018] The cast cylinder, which runs through the mounting base of either the right or left suspension cylinder of the middle axle, and the cast arc at the junction with the support body, achieves a smooth transition of the force path, avoiding stress concentration. The joints C and D at the ends of the cast cylinder are embedded in the ends of the crossbeam as welding backing plates, which not only improves assembly accuracy and reduces assembly difficulty but also ensures weld quality, thereby enhancing the overall strength of the crossbeam assembly and preventing cracking due to insufficient local strength of the frame.

[0019] The right suspension cylinder mounting base of the middle bridge is provided with a second horizontal tie rod mounting base, which is integrally cast with the right suspension cylinder mounting base of the middle bridge.

[0020] The second tie rod mounting base and the right suspension cylinder mounting base of the middle axle are integrally cast, reducing independent parts and subsequent welding joints. This eliminates weak points in this area caused by poor welding quality or stress concentration. When the tie rod and suspension cylinder transmit loads, it can prevent cracking due to insufficient local strength of the frame, greatly improving structural integrity.

[0021] The tail crossbeam includes a rear axle suspension cylinder mounting seat, a rear axle left suspension cylinder mounting seat, a first crossbeam steel pipe and a second crossbeam steel pipe welded together, and the rear axle suspension cylinder mounting seat and the rear axle left suspension cylinder mounting seat are castings. The rear axle suspension cylinder mounting base and the rear axle left suspension cylinder mounting base are provided with reinforcing ribs J, K and L. The reinforcing rib J covers one side of the cylinder mounting base. The reinforcing ribs K and L are arranged in groups at the front and rear ends of one side of the cylinder mounting base, symmetrically arranged with the reinforcing ribs K and L on the other side. The reinforcing rib J and the reinforcing ribs K and L on both sides are integrally cast. The reinforcing ribs K on both sides are arranged in a trumpet shape. A reinforcing rib M is provided in the middle of the rear axle suspension cylinder mounting base and the rear axle left suspension cylinder mounting base; A cast cylinder is provided through any of the rear axle suspension cylinder mounting seats and the rear axle left suspension cylinder mounting seat, and a cast arc is provided at the junction of the rear axle suspension cylinder mounting seat and the rear axle left suspension cylinder mounting seat near the inner side. The cast cylinders on both sides are welded and fixed to the corresponding first crossbeam steel pipe and second crossbeam steel pipe end to end as a whole. The ends of the cast cylinders on both sides are respectively provided with joints E and F, joints G and H. During welding, joints E and F, joints G and H are respectively embedded into the ends of the first crossbeam steel pipe and the second crossbeam steel pipe as welding backing plates.

[0022] The rear axle suspension cylinder mounting base and the left rear axle suspension cylinder mounting base of the rear crossbeam are cast parts. By incorporating reinforcing ribs J, K, L, and M, as well as the cast cylinder and cast arc, load distribution and a smooth stress transition are achieved. Joints E, F, G, and H are respectively embedded into the ends of the first and second crossbeam steel pipes as welding backing plates, improving welding quality and reliability and ensuring the strength of this critical load-bearing area at the rear of the frame.

[0023] The tail beam also includes tilting cylinder mounting supports on both sides of the tail, and the tilting cylinder mounting supports on both sides are integrally cast with the rear axle suspension cylinder mounting base and the rear axle left suspension cylinder mounting base, respectively.

[0024] The function of the tilting cylinder mounting bracket is integrated with that of the rear axle suspension cylinder mounting bracket and the rear axle left suspension cylinder mounting bracket, achieving integral casting. This significantly reduces the number of specialized casting molds, lowers casting costs, and enhances the structural integrity and load-bearing capacity of the tail beam.

[0025] It also includes a lifting support assembly disposed below the second right longitudinal beam and the second left longitudinal beam. The lifting support assembly includes a left support and a right support welded to the lower part of the second right longitudinal beam and the second left longitudinal beam, and a lifting cylinder mounting shaft passing through the left and right supports on both sides. The left and right supports have the same structure and are both castings. The sides of the left and right supports are set as arc surfaces near the edges of the second right longitudinal beam and the second left longitudinal beam. The left or right support is provided with a first cast rib and a second cast rib. The first cast rib is located in the middle of the support and has an arc-shaped cross-section. The second cast rib is located near the opening of the support. A number of support plates are provided at the corresponding positions of the second right longitudinal beam or the second left longitudinal beam and the second cast reinforcement.

[0026] The left and right supports of the lifting support assembly are cast parts. The first and second cast ribs inside effectively distribute the lifting load across the entire support, significantly reducing the risk of cracking under impact loads compared to plate-welded supports. The second cast rib, together with the support plate on the second right or second left longitudinal beam, ensures the welding fit accuracy between the support and the longitudinal beam, reducing welding difficulty. The arc-shaped design on both sides of the left and right supports allows the load to be transferred more smoothly to the frame body, further avoiding stress concentration and comprehensively improving reliability under lifting conditions.

[0027] Beneficial effects: This utility model systematically adopts integral casting for key stress-bearing parts such as the front, middle, and rear axles (e.g., ring beam assembly, cross beam assembly, rear cross beam suspension cylinder mounting base and lifting support assembly), combined with multi-directional reinforcing ribs (e.g., reinforcing rib AM, first cast rib, second cast rib) and a cast cylindrical part with cast arc, achieving efficient load distribution and smooth stress transition. This fundamentally overcomes the inherent defect of stress concentration at weld seams in traditional plate welded frames. At the same time, by setting joints (e.g., joint AH) on the cast supports as welding backing plates, the weld seam is precisely positioned in a low-stress area, ensuring welding quality and consistency. This collaborative design, centered on "cast main structure + optimized rib layout + welded joint control", significantly improves the overall rigidity and torsional performance of the chassis assembly, as well as the local strength and fatigue durability of various mounting supports (such as suspension cylinder mounting supports, tie rod mounting supports, and tilting cylinder mounting supports) under harsh working conditions, thereby comprehensively enhancing the vehicle's load-bearing capacity and operational reliability. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0029] Figure 1 This is a structural diagram of the frame of this utility model.

[0030] Figure 2 This is a structural diagram of the ring beam assembly of this utility model.

[0031] Figure 3 This is a cross-sectional view of the ring beam assembly structure of this utility model.

[0032] Figure 4 This is a structural diagram of the right front suspension cylinder mounting base of this utility model.

[0033] Figure 5 This is a structural diagram of the first horizontal tie rod mounting base of this utility model.

[0034] Figure 6 This is a structural diagram of the crossbeam assembly of this utility model.

[0035] Figure 7 This is a cross-sectional view of the beam assembly of this utility model.

[0036] Figure 8 This is a structural diagram of the mounting base for the right suspension cylinder of the middle bridge in this utility model.

[0037] Figure 9 This is a structural diagram of the tail beam of this utility model.

[0038] Figure 10 This is a top view of the tail beam structure of this utility model.

[0039] Figure 11 This is a structural diagram of the lifting support assembly of this utility model.

[0040] Figure 12 This is a structural diagram of the right support of this utility model.

[0041] Figure 13 This is a sectional view of the right support of this utility model.

[0042] Figure 14 This is a structural diagram of the second right longitudinal beam of this utility model. Detailed Implementation

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

[0044] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0045] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] like Figures 1 to 14 As shown, a vehicle frame assembly includes a front crossbeam 1, a first right longitudinal beam 2, a first left longitudinal beam 3, a ring beam assembly 4, a second right longitudinal beam 5, a second left longitudinal beam 6, a reinforcing beam 7, a crossbeam assembly 8, a third right longitudinal beam 9, a third left longitudinal beam 10, and a rear crossbeam 11. The first right longitudinal beam 2 and the first left longitudinal beam 3 are symmetrical components, and their front ends are welded together with the front crossbeam 1. A front axle push-pull rod mounting part 14 is welded to the lower side of the first right longitudinal beam 2 and the first left longitudinal beam 3, and a middle and rear axle push-pull rod mounting seat 15 is welded to the lower side of the third right longitudinal beam 9 and the third left longitudinal beam 10. The ring beam assembly 4 has its front left and right ends welded to the rear ends of the first left longitudinal beam 3 and the first right longitudinal beam 2, respectively; the front ends of the second right longitudinal beam 5 and the second left longitudinal beam 6 are welded to the rear ends of the ring beam assembly 4; the left and right ends of the reinforcing beam 7 are welded to the second right longitudinal beam 5 and the second left longitudinal beam 6; the front end of the crossbeam assembly 8 is welded to the rear ends of the second right longitudinal beam 5 and the second left longitudinal beam 6; the front ends of the third right longitudinal beam 9 and the third left longitudinal beam 10 are welded to the rear ends of the crossbeam assembly 8; and the front end of the tail crossbeam 11 is welded to the rear ends of the third right longitudinal beam 9 and the third left longitudinal beam 10. The ring beam assembly 4 is formed by sequentially welding the right front suspension cylinder mounting seat 41, the upper crossbeam welding assembly 42, the left front suspension cylinder mounting seat 43, and the first cross tie rod mounting seat 44. After welding, the ring beam assembly 4 has an elliptical structure, which improves the overall structural strength of the ring beam.

[0047] This invention designs the vehicle frame assembly as including a front crossbeam 1, a first right longitudinal beam 2, a first left longitudinal beam 3, a ring beam assembly 4, a second right longitudinal beam 5, a second left longitudinal beam 6, a reinforcing beam 7, a crossbeam assembly 8, a third right longitudinal beam 9, a third left longitudinal beam 10, and a rear crossbeam 11, all connected by welding, thus constructing a complete load-bearing frame. In particular, the ring beam assembly 4, after welding, has an elliptical structure. This design significantly improves the overall structural strength of the ring beam assembly 4, thereby enhancing the torsional resistance and load-bearing capacity of the vehicle frame assembly, fundamentally improving the reliability of the entire vehicle.

[0048] The right front suspension cylinder mounting seat 41, the upper crossbeam welding assembly 42, the left front suspension cylinder mounting seat 43, and the first tie rod mounting seat 44 are all integrally cast. The right front suspension cylinder mounting seat 41 and the left front suspension cylinder mounting seat 43 are symmetrical parts with the same structure. Reinforcing ribs A45, B46, and C47 are provided on either the right front suspension cylinder mounting base 41 or the left front suspension cylinder mounting base 43. The reinforcing ribs B46 and C47 are provided, and the reinforcing rib A45 covers one side of the cylinder mounting base. The reinforcing ribs B46 and C47 are arranged in groups at the front and rear ends of one side of the cylinder mounting base, symmetrically arranged with the reinforcing ribs B46 and C47 on the other side. The reinforcing rib A45 and the reinforcing ribs B46 and C47 on both sides are integrally cast. Two reinforcing ribs D48 are provided inside either the right front suspension cylinder mounting base 41 or the left front suspension cylinder mounting base 43.

[0049] By integrally casting the right front suspension cylinder mounting base 41, the upper crossbeam welding assembly 42, the left front suspension cylinder mounting base 43, and the first tie rod mounting base 44, and by providing reinforcing ribs A45, B46, C47, and D48 on the right front suspension cylinder mounting base 41 or the left front suspension cylinder mounting base 43, the load transmitted by the suspension cylinder can be effectively transferred and distributed to the main body of the ring beam assembly 4, avoiding stress concentration. Simultaneously, the reinforcing rib D48 significantly increases the lateral strength of the support to absorb lateral loads, improves the forming stability of the casting, and reduces the difficulty of the casting process.

[0050] The upper and lower ends of any of the right front suspension cylinder mounting base 41 or the left front suspension cylinder mounting base 43 are respectively provided with joint A49 and joint B50 at the connection points with the upper crossbeam welding assembly 42 and the first crossbar mounting base 44. The joint A49 and joint B50 are respectively inserted into the ends of the upper crossbeam welding assembly 42 and the first crossbar mounting base 44, and serve as welding backing plates during welding.

[0051] By providing the connecting portions A49 and B50 at the upper and lower ends of the right front suspension cylinder mounting seat 41 or the left front suspension cylinder mounting seat 43, respectively, and inserting them into the upper crossbeam welding assembly 42 and the first tie rod mounting seat 44, they serve as welding backing plates during welding. This design, benefiting from the casting process, ensures the consistency and integrity of the weld, improves welding quality, and optimizes the weld placement in a location with lower stress, thereby preventing weld cracking due to excessive stress and improving reliability.

[0052] A reinforcing rib E51 is provided between the horizontal tie rod mounting part of the first horizontal tie rod mounting base 44 and the base body of the first horizontal tie rod mounting base 44.

[0053] The reinforcing rib E51 is provided between the tie rod mounting part of the first tie rod mounting base 44 and the base body of the first tie rod mounting base 44, which directly and effectively improves the structural strength of the first tie rod mounting base 44 body, enabling it to withstand and transmit complex loads from the tie rod.

[0054] The crossbeam assembly 8 includes a right suspension cylinder mounting base 81, a crossbeam 82, and a left suspension cylinder mounting base 83 of the middle bridge, which are welded together in sequence. The right suspension cylinder mounting base 81 and the left suspension cylinder mounting base 83 of the middle bridge are both cast. The right suspension cylinder mounting base 81 and the left suspension cylinder mounting base 83 of the middle bridge are symmetrically arranged and have the same structure. Reinforcing ribs F84, G85, and H86 are provided on either the right suspension cylinder mounting base 81 or the left suspension cylinder mounting base 83 of the middle bridge. The reinforcing rib F84 covers one side of the cylinder mounting base. The reinforcing ribs G85 and H86 are arranged in groups at the front and rear ends of one side of the cylinder mounting base, symmetrically arranged with the reinforcing ribs G85 and H86 on the other side. The reinforcing rib F84 and the reinforcing ribs G85 and H86 on both sides are integrally cast. The reinforcing ribs G85 on both sides are arranged in a trumpet shape. A reinforcing rib I87 is provided in the middle of either the right suspension cylinder mounting base 81 or the left suspension cylinder mounting base 83 of the middle bridge.

[0055] The right suspension cylinder mounting base 81 and the left suspension cylinder mounting base 83 of the crossbeam assembly 8 are cast in shape. By incorporating reinforcing ribs F84, G85, H86, and I87, particularly the flared reinforcing rib G85, the load transmitted by the suspension cylinders is better distributed across the support body, effectively preventing stress concentration. This integrally cast rib design overcomes the inherent defect of traditional plate-welded structures in achieving a smooth stress transition, significantly improving the stress distribution in critical areas.

[0056] A cast cylinder is provided through any of the middle bridge right suspension cylinder mounting seats 81 or middle bridge left suspension cylinder mounting seats 83, and a cast arc is provided at the junction with the middle bridge right suspension cylinder mounting seat 81 or middle bridge left suspension cylinder mounting seat 83 near the inner side. The cast cylinders on both sides are welded and fixed to the crossbeam 82 at both ends. The ends of the cast cylinders on both sides are respectively provided with joint C88 and joint D89. During welding, the joint C88 and joint D89 are embedded into the ends of the crossbeam 82 as welding backing plates.

[0057] The cast cylinder, which runs through the right suspension cylinder mounting base 81 or the left suspension cylinder mounting base 83 of the middle axle, and the cast arc at the junction with the support body, achieves a smooth transition of the force path and avoids stress concentration. The joints C88 and D89 at the ends of the cast cylinder are embedded in the ends of the crossbeam as welding backing plates, which not only improves assembly accuracy and reduces assembly difficulty, but also ensures weld quality, thereby improving the overall strength of the crossbeam assembly 8 and preventing cracking due to insufficient local strength of the frame.

[0058] The right suspension cylinder mounting base 81 of the middle bridge is provided with a second horizontal tie rod mounting base 90, which is integrally cast with the right suspension cylinder mounting base 81 of the middle bridge.

[0059] The second tie rod mounting base 90 and the right suspension cylinder mounting base 81 of the middle axle are integrally cast, reducing independent parts and subsequent welding joints. This eliminates weak points in this area caused by poor welding quality or stress concentration. When the tie rod and suspension cylinder transmit loads, it can prevent cracking due to insufficient local strength of the frame, greatly improving structural integrity.

[0060] The rear crossbeam 11 includes a rear axle right suspension cylinder mounting seat 111, a rear axle left suspension cylinder mounting seat 112, a first crossbeam steel pipe 113, and a second crossbeam steel pipe 114 welded together. The rear axle right suspension cylinder mounting seat 111 and the rear axle left suspension cylinder mounting seat 112 are castings. Reinforcing ribs J115, K116, and L117 are provided on the right rear axle suspension cylinder mounting seat 111 and the left rear axle suspension cylinder mounting seat 112. The reinforcing rib J115 covers one side of the cylinder mounting seat. The reinforcing ribs K116 and L117 are arranged in groups at the front and rear ends of one side of the cylinder mounting seat, symmetrically arranged with the reinforcing ribs K116 and L117 on the other side. The reinforcing rib J115 and the reinforcing ribs K116 and L117 on both sides are integrally cast. The reinforcing ribs K116 on both sides are arranged in a trumpet shape. A reinforcing rib M118 is provided in the middle of either the right rear axle suspension cylinder mounting seat 111 or the left rear axle suspension cylinder mounting seat 112. A cast cylinder is provided through either the right rear axle suspension cylinder mounting seat 111 or the left rear axle suspension cylinder mounting seat 112, and a cast arc is provided at the junction of the right rear axle suspension cylinder mounting seat 111 and the left rear axle suspension cylinder mounting seat 112 near the inner side. The cast cylinders on both sides are welded and fixed to the corresponding first crossbeam steel pipe 113 and second crossbeam steel pipe 114 end to end as a whole. The ends of the cast cylinders on both sides are respectively provided with joints E119 and F120, and joints G121 and H123. During welding, joints E119 and F120, and joints G121 and H123 are respectively embedded into the ends of the first crossbeam steel pipe 113 and the second crossbeam steel pipe 114 as welding backing plates.

[0061] The rear axle right suspension cylinder mounting seat 111 and rear axle left suspension cylinder mounting seat 112 of the rear crossbeam 11 are cast parts. By incorporating reinforcing ribs J115, K116, L117, and M118, as well as the cast cylinder and cast arc, load distribution and a smooth stress transition are achieved. The joints E119, F120, G121, and H123 are respectively embedded at the ends of the first crossbeam steel pipe 113 and the second crossbeam steel pipe 114 as welding backing plates, improving welding quality and reliability and ensuring the strength of this critical load-bearing area at the rear of the frame.

[0062] The tail beam 11 also includes tilting cylinder mounting supports 124 on both sides of the tail. The tilting cylinder mounting supports 124 on both sides are integrally cast with the rear axle right suspension cylinder mounting seat 111 and the rear axle left suspension cylinder mounting seat 112, respectively.

[0063] The function of the tilting cylinder mounting bracket 124 is integrated with the rear axle right suspension cylinder mounting bracket 111 and the rear axle left suspension cylinder mounting bracket 112, achieving integral casting. This significantly reduces the number of special casting molds, lowers casting costs, and enhances the structural integrity and load-bearing capacity of the tail beam 11.

[0064] It also includes a lifting support assembly 12 disposed below the second right longitudinal beam 5 and the second left longitudinal beam 6. The lifting support assembly 12 includes a left support 121 and a right support 122 welded to the lower part of the second right longitudinal beam 5 and the second left longitudinal beam 6, and a lifting cylinder mounting shaft 123 passing through the left support 121 and the right support 122 on both sides. The left support 121 and the right support 122 have the same structure and are both castings. The two sides of the left support 121 and the right support 122 are set as arc surfaces near the edges of the second right longitudinal beam 5 and the second left longitudinal beam 6. A first cast rib 124 and a second cast rib 125 are provided in either the left support 121 or the right support 122. The first cast rib 124 is located in the middle of the support and has an arc-shaped cross section. The second cast rib 125 is located near the opening of the support. A number of support plates 13 are provided at the corresponding positions of any of the second right longitudinal beam 5 or the second left longitudinal beam 6 and the second cast reinforcement 125.

[0065] The left support 121 and right support 122 of the lifting support assembly 12 are cast parts. The first cast rib 124 and the second cast rib 125 provided inside can effectively distribute the lifting load throughout the support, significantly reducing the risk of cracking under impact loads compared to plate welded supports. The second cast rib 125 works together with the support plate 13 provided on the second right longitudinal beam 5 or the second left longitudinal beam 6 to ensure the welding fit accuracy between the support and the longitudinal beam and reduce the welding difficulty. The arc surface design on both sides of the left support 121 and right support 122 allows the load to be transferred to the frame body more smoothly, further avoiding stress concentration and comprehensively improving reliability under lifting conditions.

[0066] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0067] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vehicle frame assembly, characterized in that: It includes a front crossbeam (1), a first right longitudinal beam (2), a first left longitudinal beam (3), a ring beam assembly (4), a second right longitudinal beam (5), a second left longitudinal beam (6), a reinforcing beam (7), a crossbeam assembly (8), a third right longitudinal beam (9), a third left longitudinal beam (10), and a rear crossbeam (11). The first right longitudinal beam (2) and the first left longitudinal beam (3) are symmetrical components, and their front ends are welded together with the front crossbeam (1). The first right longitudinal beam (2) and the first left longitudinal beam (3) are welded to the lower side with a front axle push-pull rod mounting part (14). The third right longitudinal beam (9) and the third left longitudinal beam (10) are welded to the lower side with a middle and rear axle push-pull rod mounting seat (15). The ring beam assembly (4) has its front left and right ends welded to the rear ends of the first left longitudinal beam (3) and the first right longitudinal beam (2) respectively; the front ends of the second right longitudinal beam (5) and the second left longitudinal beam (6) are welded to the rear ends of the ring beam assembly (4); the left and right ends of the reinforcing beam (7) are welded to the second right longitudinal beam (5) and the second left longitudinal beam (6); the front end of the crossbeam assembly (8) is welded to the rear ends of the second right longitudinal beam (5) and the second left longitudinal beam (6); the front ends of the third right longitudinal beam (9) and the third left longitudinal beam (10) are welded to the rear ends of the crossbeam assembly (8); the front end of the tail crossbeam (11) is welded to the rear ends of the third right longitudinal beam (9) and the third left longitudinal beam (10). The ring beam assembly (4) is formed by sequentially welding the right front suspension cylinder mounting seat (41), the upper crossbeam welding assembly (42), the left front suspension cylinder mounting seat (43), and the first cross tie rod mounting seat (44). After welding, the ring beam assembly (4) has an elliptical structure, which improves the overall structural strength of the ring beam.

2. The frame assembly according to claim 1, characterized in that: The right front suspension cylinder mounting seat (41), the upper crossbeam welding assembly (42), the left front suspension cylinder mounting seat (43), and the first cross tie rod mounting seat (44) are all integrally cast. The right front suspension cylinder mounting seat (41) and the left front suspension cylinder mounting seat (43) are symmetrical parts with the same structure. Reinforcing ribs A (45), B (46), and C (47) are provided on any of the right front suspension cylinder mounting seats (41) or left front suspension cylinder mounting seats (43). The reinforcing ribs B (46) and C (47) are provided. The reinforcing rib A (45) covers one side of the cylinder mounting seat. The reinforcing ribs B (46) and C (47) are arranged in groups at the front and rear ends of one side of the cylinder mounting seat, and are symmetrically arranged with the reinforcing ribs B (46) and C (47) on the other side. The reinforcing rib A (45) and the reinforcing ribs B (46) and C (47) on both sides are integrally cast. Two reinforcing ribs D (48) are provided inside either the right front suspension cylinder mounting base (41) or the left front suspension cylinder mounting base (43).

3. The frame assembly according to claim 2, characterized in that: The upper and lower ends of any of the right front suspension cylinder mounting base (41) or left front suspension cylinder mounting base (43) are respectively provided with joint A (49) and joint B (50) at the connection points with the upper crossbeam welding assembly (42) and the first crossbar mounting base (44). The joint A (49) and joint B (50) are respectively inserted into the ends of the upper crossbeam welding assembly (42) and the first crossbar mounting base (44) and serve as welding pads during welding.

4. The frame assembly according to claim 3, characterized in that: A reinforcing rib E (51) is provided between the horizontal tie rod mounting part of the first horizontal tie rod mounting base (44) and the base body of the first horizontal tie rod mounting base (44).

5. The frame assembly according to claim 1, characterized in that: The crossbeam assembly (8) includes a right suspension cylinder mounting seat (81), a crossbeam (82), and a left suspension cylinder mounting seat (83) of the middle bridge, which are welded together in sequence. The right suspension cylinder mounting seat (81) and the left suspension cylinder mounting seat (83) of the middle bridge are both cast. The right suspension cylinder mounting seat (81) and the left suspension cylinder mounting seat (83) of the middle bridge are symmetrically arranged and have the same structure. Reinforcing ribs F (84), G (85), and H (86) are provided on any of the middle bridge right suspension cylinder mounting seats (81) or middle bridge left suspension cylinder mounting seats (83). The reinforcing rib F (84) covers one side of the cylinder mounting seat. The reinforcing ribs G (85) and H (86) are arranged in groups at the front and rear ends of one side of the cylinder mounting seat, and are symmetrically arranged with the reinforcing ribs G (85) and H (86) on the other side. The reinforcing rib F (84) and the reinforcing ribs G (85) and H (86) on both sides are integrally cast. The reinforcing ribs G (85) on both sides are arranged in a trumpet shape. A reinforcing rib I (87) is provided in the middle of either the right suspension cylinder mounting base (81) or the left suspension cylinder mounting base (83) of the middle bridge.

6. The frame assembly according to claim 5, characterized in that: A cast cylinder is provided through any of the middle bridge right suspension cylinder mounting seats (81) or middle bridge left suspension cylinder mounting seats (83), and a cast arc is provided at the junction of the middle bridge right suspension cylinder mounting seat (81) or middle bridge left suspension cylinder mounting seat (83) near the inner side. The cast cylinders on both sides are welded and fixed to the crossbeam (82) at both ends. The ends of the cast cylinders on both sides are respectively provided with joint C (88) and joint D (89). When welding, the joint C (88) and joint D (89) are embedded into the ends of the crossbeam (82) as welding pads.

7. The frame assembly according to claim 6, characterized in that: The right suspension cylinder mounting base (81) of the middle bridge is provided with a second horizontal tie rod mounting base (90), and the second horizontal tie rod mounting base (90) and the right suspension cylinder mounting base (81) of the middle bridge are integrally cast.

8. The frame assembly according to claim 1, characterized in that: The tail crossbeam (11) includes a rear axle right suspension cylinder mounting seat (111), a rear axle left suspension cylinder mounting seat (112), a first crossbeam steel pipe (113), and a second crossbeam steel pipe (114) welded together. The rear axle right suspension cylinder mounting seat (111) and the rear axle left suspension cylinder mounting seat (112) are castings. Reinforcing ribs J (115), K (116), and L (117) are provided on the right rear axle suspension cylinder mounting base (111) and the left rear axle suspension cylinder mounting base (112). The reinforcing rib J (115) covers one side of the cylinder mounting base. The reinforcing ribs K (116) and L (117) are arranged in groups at the front and rear ends of one side of the cylinder mounting base, and are symmetrically arranged with the reinforcing ribs K (116) and L (117) on the other side. The reinforcing rib J (115) and the reinforcing ribs K (116) and L (117) on both sides are integrally cast. The reinforcing ribs K (116) on both sides are arranged in a trumpet shape. A reinforcing rib M (118) is provided in the middle of either the right rear axle suspension cylinder mounting seat (111) or the left rear axle suspension cylinder mounting seat (112). A cast cylinder is provided through any of the rear axle right suspension cylinder mounting seats (111) and rear axle left suspension cylinder mounting seats (112), and a cast arc is provided at the junction of the rear axle right suspension cylinder mounting seats (111) and rear axle left suspension cylinder mounting seats (112) near the inner side. The cast cylinders on both sides are welded and fixed together with the corresponding first crossbeam steel pipe (113) and second crossbeam steel pipe (114) end to end. The ends of the cast cylinders on both sides are respectively provided with joint E (119) and joint F (120) and joint G (121) and joint H (123). During welding, joint E (119) and joint F (120) and joint G (121) and joint H (123) are respectively embedded into the ends of the first crossbeam steel pipe (113) and the second crossbeam steel pipe (114) as welding backing plates.

9. The frame assembly according to claim 8, characterized in that: The tail beam (11) also includes tilting cylinder mounting supports (124) on both sides of the tail. The tilting cylinder mounting supports (124) on both sides are integrally cast with the rear axle right suspension cylinder mounting seat (111) and the rear axle left suspension cylinder mounting seat (112).

10. The frame assembly according to claim 1, characterized in that: It also includes a lifting support assembly (12) disposed below the second right longitudinal beam (5) and the second left longitudinal beam (6). The lifting support assembly (12) includes a left support (121) and a right support (122) welded to the lower part of the second right longitudinal beam (5) and the second left longitudinal beam (6), and a lifting cylinder mounting shaft (123) passing through the left support (121) and the right support (122) on both sides. The left support (121) and the right support (122) have the same structure and are both castings. The two sides of the left support (121) and the right support (122) are set as arc surfaces near the edges of the second right longitudinal beam (5) and the second left longitudinal beam (6). A first cast rib (124) and a second cast rib (125) are provided in either the left support (121) or the right support (122). The first cast rib (124) is located in the middle of the support and has an arc-shaped cross section. The second cast rib (125) is located near the opening of the support. Any second right longitudinal beam (5) or second left longitudinal beam (6) is provided with a corresponding number of support plates (13) at the position corresponding to the second cast reinforcement (125).

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