Suspension assembly structure

Abstract

The utility model provides a suspension assembly structure, which relates to the technical field of vehicles and comprises a frame, a front suspension and a rear suspension, the front suspension and the rear suspension are mounted at the bottom of the frame, the rear suspension comprises rear plate springs positioned on two sides of the frame, the front end and the rear end of each rear plate spring are respectively fixed with a middle axle and a rear axle of the frame, and beam end thrust rod supports are fixed on two inner sides of the frame. Two middle axle upper thrust rods are supported between the beam end thrust rod support and the middle axle, a V-shaped structure is formed between the two middle axle upper thrust rods, two rear axle upper thrust rods are supported between the beam end thrust rod support and the rear axle, and a V-shaped structure is formed between the two rear axle upper thrust rods; the front suspension comprises two front plate springs, the front ends of the two front plate springs are connected with the frame through front supports, the rear ends of the two front plate springs are connected with the frame through rear supports, the upper portions of the rear supports are fixed to the frame, positioning pins penetrate through the lower portions of the rear supports, and the positioning pins are supported at the bottoms of the rear ends of the front plate springs. The utility model has the beneficial effect that the safety and the reliability of the vehicle are improved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and in particular to a suspension assembly structure. Background Technology

[0002] With the continuous development of mining dump truck technology, small-tonnage mining dump trucks are moving towards higher speeds. This trend places higher demands on the overall performance of the vehicles, especially the stability and reliability of the chassis structure. During high-speed driving, the impact forces on the vehicle chassis structure increase significantly, posing a severe challenge to the matching and reliability of the suspension system and the frame.

[0003] Currently, the suspension structures of small-tonnage mining dump trucks mostly use traditional connection methods. Specifically, the front suspension typically uses a rolled-ear structure at both ends, connected to the web and bottom surfaces of the frame via leaf spring supports, with the lower end bolted to the front axle. The rear suspension structure is relatively complex, with the thrust rod on the rear axle often being a single-bar direct-push type, connected to the frame and axle at both ends respectively.

[0004] However, the aforementioned existing technologies have the following drawbacks: the rear end of the front leaf spring of the mining dump truck is subjected to large impacts and loads, the rolled ear structure is relatively simple to withstand light loads, it is prone to plastic deformation, has insufficient vibration absorption capacity, and is prone to fatigue failure; moreover, the thrust rod of the rear suspension directly transmits the force to the frame crossbeam, increasing the stress on the frame crossbeam and reducing the reliability of the frame. Utility Model Content

[0005] This application provides a suspension assembly structure that solves the technical problems of insufficient vibration absorption capacity of the front leaf spring, easy fatigue failure, and low reliability of the rear leaf spring in existing small-tonnage mining dump trucks, thereby improving vehicle safety.

[0006] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a suspension assembly structure, including a frame, a front suspension and a rear suspension mounted on the bottom of the frame, the rear suspension including rear leaf springs located on both sides of the frame, the front and rear ends of the rear leaf springs being fixed to the middle axle and the rear axle of the frame respectively, beam end thrust rod supports being fixed on both inner sides of the frame, two middle axle upper thrust rods being supported between the beam end thrust rod supports and the middle axle, the two middle axle upper thrust rods forming a V-shaped structure, two rear axle upper thrust rods being supported between the beam end thrust rod supports and the rear axle, the two rear axle upper thrust rods forming a V-shaped structure; the front suspension including two front leaf springs, the front ends of the two front leaf springs being connected to the frame through front supports, the rear ends of the two front leaf springs being connected to the frame through rear supports, the upper part of the rear supports being fixed to the frame, and a locating pin penetrating the lower part of the rear supports, the locating pin supporting the bottom of the rear end of the front leaf springs.

[0007] In the rear suspension structure, a V-shaped structure is formed between the two thrust rods on the middle axle and between the two thrust rods on the rear axle. Compared to the single-rod direct-push structure, this optimizes the force distribution of the thrust rods, thus improving vehicle reliability. Meanwhile, the front suspension structure employs a combination of front trunnion and rear sliding plate connection. The rear end uses a sliding plate structure, which can effectively withstand greater loads and impacts, solving the problem of plastic deformation and fatigue failure caused by insufficient force in existing trunnion structures, thereby improving the load-bearing capacity and service life of the front suspension.

[0008] As a further improvement to the above solution, the rear suspension also includes a balance shaft, which is located below the rear leaf spring. Both ends of the balance shaft are fixed to the rear leaf spring by U-bolts. The balance shaft helps to balance the stress on the rear suspension and improve the stability and durability of the entire suspension system.

[0009] As a further improvement to the above solution, a lower thrust rod of the middle axle is connected between the two ends of the middle axle and the balance shaft, and a lower thrust rod of the rear axle is connected between the two ends of the rear axle and the balance shaft; thereby, part of the load on the axle can be transferred to the balance shaft, optimizing the stress on the entire suspension system.

[0010] As a further improvement to the above scheme, the thickness of each steel plate in the rear leaf spring is different.

[0011] As a further improvement to the above solution, two crossbeams are connected between the two rear supports, and the two ends of the crossbeams are connected to the rear supports by bolts. The two crossbeams can enhance the overall rigidity of the front suspension and improve the suspension assembly's ability to withstand heavy loads and impacts.

[0012] As a further improvement to the above solution, the front suspension also includes shock absorbers located on both sides of the vehicle frame. The upper end of the shock absorber is connected to the vehicle frame through the upper shock absorber bracket, and the lower end of the shock absorber is connected to the front axle through the lower shock absorber bracket. The installation of shock absorbers helps to absorb and reduce the vibration and impact generated during vehicle operation, thereby improving ride comfort and driving stability.

[0013] As a further improvement to the above solution, a pressure block is provided above the middle of the front leaf spring, and a straight bolt runs through the pressure block from top to bottom. The lower end of the straight bolt is fixed to the front axle. The straight bolt connection method is simple to operate and easy to disassemble and assemble, reducing the workload and time cost during maintenance and replacement.

[0014] As can be seen from the above technical solutions, this utility model has at least the following technical effects or advantages:

[0015] In this invention, the two thrust rods on the middle axle of the rear suspension structure form a V-shaped structure, and the two thrust rods on the rear axle also form a V-shaped structure. Compared to the single-rod direct-push structure, this optimizes the force distribution of the thrust rods, thus improving vehicle reliability. Simultaneously, the front suspension structure adopts a combination of front trunnion and rear sliding plate connection. The rear end uses a sliding plate structure, which can effectively withstand greater loads and impacts, solving the problem of plastic deformation and fatigue failure caused by insufficient force in the existing trunnion structure, thereby improving the load-bearing capacity and service life of the front suspension. Attached Figure Description

[0016] To more clearly illustrate the technical solution of this utility model, the accompanying drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle;

[0019] Figure 3 This is a bottom view of the present invention;

[0020] Figure 4 This is a side view of the present invention.

[0021] Explanation of reference numerals in the attached diagram: 1. Frame, 2. Rear leaf spring, 3. Middle axle, 4. Rear axle, 5. Thrust rod support, 6. Upper thrust rod of the middle axle, 7. Upper thrust rod of the rear axle, 8. Balance shaft, 9. U-bolt, 10. Lower thrust rod of the middle axle, 11. Lower thrust rod of the rear axle, 12. Front leaf spring, 13. Front support, 14. Rear support, 15. Second crossbeam. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, other embodiments obtained by those skilled in the art without creative effort are all within the scope of protection of this patent.

[0023] This utility model provides a suspension assembly structure, which includes a vehicle frame 1, a front suspension and a rear suspension mounted on the bottom of the vehicle frame 1.

[0024] like Figure 1 As shown, the rear suspension includes rear leaf springs 2 located on both sides of the frame 1. The rear leaf springs 2 have an unequal thickness structure (i.e., the thickness of each steel plate in the rear leaf spring 2 is different). The front and rear ends of the rear leaf springs 2 are fixedly connected to the middle axle 3 and the rear axle 4 of the frame 1, respectively. Specifically, the front end of the rear leaf spring 2 is connected to the middle axle 3, and the rear end of the rear leaf spring 2 is connected to the rear axle 4, thereby forming a support structure.

[0025] Combination Figure 1 , Figure 2 As shown, beam end thrust rod supports 5 are fixed to the inner sides of the longitudinal beams on both sides of the frame 1. The beam end thrust rod supports 5 serve as support points, supporting two upper thrust rods 6 between the upper and middle axles 3. The two upper thrust rods 6 form a V-shaped structure, which enhances the stability of the middle axle 3, enabling it to more stably support the vehicle when facing complex road conditions.

[0026] Correspondingly, two rear axle upper thrust rods 7 are supported between the beam end thrust rod support 5 and the rear axle 4. The two rear axle upper thrust rods 7 also form a V-shaped structure, which further improves the stability of the rear axle 4.

[0027] The front suspension includes two front leaf springs 12. The front ends of both front leaf springs 12 are connected to the vehicle frame 1 via front support 13, and the rear ends of both front leaf springs 12 are connected to the vehicle frame 1 via rear support 14. Specifically, in this embodiment, the upper part of the rear support 14 is fixedly connected to the vehicle frame 1, and a locating pin passes through the lower part of the rear support 14. The locating pin supports the bottom of the rear end of the front leaf springs 12, thereby effectively preventing excessive deformation or fatigue failure of the front leaf springs 12 when they are under stress.

[0028] Combination Figure 3 , Figure 4 As shown, in this embodiment, the rear suspension also includes a balance shaft 8. The balance shaft 8 is located below the rear leaf spring 2 and is fixedly connected to the rear leaf spring 2 by U-bolts 9. The balance shaft 8 helps to balance the stress on the rear suspension, improving the stability and durability of the entire suspension system.

[0029] Specifically, in this embodiment, a lower thrust rod 10 is connected between the two ends of the middle axle 3 and the balance shaft 8, and a lower thrust rod 11 is connected between the two ends of the rear axle 4 and the balance shaft 8. The lower thrust rods 10 and 11 further enhance the stability of the middle axle 3 and the rear axle 4, enabling them to more reliably support the vehicle when facing high-speed driving and complex road conditions.

[0030] In this embodiment, two crossbeams 15 are also connected between the two rear supports 14 of the front suspension. The two ends of the two crossbeams 15 are respectively connected to the rear supports 14 by bolts. The two crossbeams 15 can enhance the overall rigidity of the front suspension and improve the suspension assembly's ability to withstand heavy loads and impacts.

[0031] In addition, the front suspension includes shock absorbers located on both sides of the frame 1. The upper end of the shock absorber is connected to the frame 1 via an upper shock absorber bracket, and the lower end is connected to the front axle via a lower shock absorber bracket. This shock absorber configuration helps absorb and mitigate vibrations and impacts generated during vehicle operation, improving ride comfort and driving stability. A pressure block is also provided above the center of the front leaf spring 12. A straight bolt runs through the pressure block from top to bottom, with its lower end fixedly connected to the front axle. Compared to traditional connection methods, the straight bolt connection is more reliable and reduces operating and maintenance costs.

[0032] In the description of this utility model, the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "vertical," and "horizontal," if present, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only to describe the utility model and not to require that the utility model be constructed or operated in a specific orientation; therefore, they should not be construed as limitations on the utility model. The terms "connected" and "linked" in this utility model should be interpreted broadly. For example, they can refer to a connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms based on the specific circumstances.

[0033] 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 its 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 novelty disclosed herein.

Claims

1. A suspension assembly structure comprising a vehicle frame (1), a front suspension and a rear suspension mounted to the bottom of the vehicle frame (1), the rear suspension comprising rear leaf springs (2) located on both sides of the vehicle frame (1), the front and rear ends of the rear leaf springs (2) being fixed to the center bridge (3) and the rear bridge (4) of the vehicle frame (1), characterized in that, The frame (1) is fixed with beam end thrust rod supports (5) on both sides, the beam end thrust rod supports (5) are supported with two middle bridge upper thrust rods (6) between the middle bridge (3), the two middle bridge upper thrust rods (6) form a V-shaped structure, the beam end thrust rod supports (5) are supported with two rear bridge upper thrust rods (7) between the rear bridge (4), and the two rear bridge upper thrust rods (7) form a V-shaped structure; The front suspension includes two front leaf springs (12), the front ends of the two front leaf springs (12) are connected with the frame (1) through front supports (13), the rear ends of the two front leaf springs (12) are connected with the frame (1) through rear supports (14), the upper part of the rear support (14) is fixed with the frame (1), and the lower part of the rear support (14) penetrates a positioning pin, and the positioning pin is supported on the bottom of the rear end of the front leaf spring (12).

2. A suspension assembly arrangement according to claim 1, wherein The rear suspension further includes a balance shaft (8), the balance shaft (8) is located below the rear leaf spring (2), and the two ends of the balance shaft (8) are fixed with the rear leaf spring (2) through U-shaped bolts (9) respectively.

3. A suspension assembly arrangement according to claim 2, wherein The middle bridge (3) is connected with the middle bridge lower thrust rod (10) between the two ends of the balance shaft (8), and the rear bridge (4) is connected with the rear bridge lower thrust rod (11) between the two ends of the balance shaft (8).

4. The suspension assembly structure of claim 1, wherein The thickness of each steel plate in the rear leaf spring (2) is different.

5. The suspension assembly structure of claim 1, wherein Two cross beams (15) are connected between the two rear supports (14), and the two ends of the cross beam (15) are connected with the rear support (14) through bolts respectively.

6. A suspension assembly arrangement according to claim 5, wherein The front suspension further includes shock absorbers located on both sides of the frame (1), the upper end of the shock absorber is connected with the frame (1) through a shock absorber upper support, and the lower end of the shock absorber is connected with the front bridge through a shock absorber lower support.

7. A suspension assembly arrangement according to claim 6, wherein The middle part of the front leaf spring (12) is provided with a pressing block, a straight bolt penetrates the pressing block from top to bottom, and the lower end of the straight bolt is fixed with the front bridge.

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