Balance beam and suspension system

Abstract

A balance beam and a suspension system belong to the technical field of vehicle suspensions, and comprise a V-shaped balance beam main body with a box-shaped cross section, a shaft sleeve is fixedly arranged in the middle of the balance beam main body, and an installation space for installing a conical rubber bearing is arranged in the shaft sleeve. A plurality of reinforcing plates are fixedly arranged in the balance beam body, the balance beam body is in a V shape, bending stress generated in the running process of a vehicle can be better dispersed, the V-shaped structure can provide higher structural stability, excessive deformation under the action of vertical and lateral force is prevented, the overall rigidity of the balance beam is kept, and meanwhile the service life of the balance beam is prolonged. The balance beam main body adopts the box-shaped cross section, the box-shaped cross section can provide good bending resistance and torsion resistance, strength and rigidity can be improved, the overall weight can be reduced, stress can be effectively dispersed, loads in all directions can be borne, and the structural strength of the balance beam main body is further enhanced through the internal reinforcing plate.

Description

Technical Field

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

[0002] As an important component of the suspension system of articulated dump trucks, the suspension balance beam structure helps to reduce the roll and bumps of articulated dump trucks during driving. By connecting the front and rear axles, it coordinates the longitudinal and lateral stability of the vehicle, ensures that the load of the front and rear axles is evenly distributed, reduces the amplitude of body tilt or sway during cornering, and improves the handling stability of dump trucks in complex environments.

[0003] The existing balance suspension system consists of a balance beam and a balance shaft (as disclosed in CN107215159A). The balance beam is symmetrically arranged on both sides of the vehicle frame. The middle position of the balance beam is hinged to the U-shaped frame on the vehicle frame through the balance shaft. A rubber shock absorber is fixed to the bottom surface of each end of the balance beam. Each rubber shock absorber is fixed to the axle diaphragm, ensuring that the middle axle and the rear axle have good contact with the ground under complex road conditions, mitigating and attenuating vertical impacts to the ground, and improving the vehicle's power and passability.

[0004] For safety reasons, existing balance beams are mostly integral beam structures made of high-strength metal materials, such as steel beams or aluminum alloy beams, which can withstand large loads. However, their overall weight is large, which seriously affects the load-bearing capacity and fuel efficiency of dump trucks, and the manufacturing cost is high. In addition, existing balance beams are mostly directly connected to the balance shaft through bushings, which cannot effectively relieve the stress from the frame and is very easy to cause damage to the balance shaft and balance beam. Utility Model Content

[0005] To address the technical problems of existing balance beams in the background art, which have a large overall weight, seriously affecting the load-bearing capacity and fuel efficiency of dump trucks, and have high manufacturing costs, this utility model provides a balance beam.

[0006] The technical solution of this utility model is as follows:

[0007] This utility model provides a balance beam, including a balance beam body in the shape of a V-shape with a box-section. A bushing is fixedly installed at the middle position of the balance beam body, and the bushing contains an installation space for installing a tapered rubber bearing. Several reinforcing plates are fixedly installed inside the balance beam body. The V-shape of the balance beam body can better disperse the bending stress generated during vehicle operation, and the V-shaped structure can provide higher structural stability, preventing excessive deformation under vertical and lateral forces and maintaining the overall stiffness of the balance beam. At the same time, the box-section of the balance beam body can provide good bending and torsional resistance, which can not only increase strength and stiffness and reduce overall weight, but also effectively disperse stress and help to withstand loads in all directions. The internal reinforcing plates further enhance the structural strength of the balance beam body and extend the service life of the balance beam.

[0008] Preferably, the bushing contains a coaxial first mounting surface and a second mounting surface. The first mounting surface is a tapered surface and there are two of them. The two first mounting surfaces are symmetrically arranged on both sides of the second mounting surface. The diameter of the first mounting surface gradually decreases towards the second mounting surface, which facilitates the precise installation and positioning of the tapered rubber bearing and ensures that it can play a stable role during operation. The symmetrically arranged tapered first mounting surfaces facilitate the connection with the two oppositely arranged tapered rubber bearings. When the two tapered rubber bearings are subjected to forces in various directions, they can distribute and buffer the force more evenly, thereby improving the shock absorption effect and overall stability.

[0009] Preferably, the main body of the balance beam includes: a top plate, a bottom plate, an outer vertical plate, and a blocking plate that are fixedly connected. The bottom plate is a V-shaped bent plate structure with horizontal sections at both ends. Several mounting holes for connecting shock absorbers are provided on the horizontal sections. The V-shaped bent plate structure of the bottom plate not only conforms to the overall shape design of the balance beam main body, but also reduces weight while ensuring strength. The mounting holes at both ends of the bottom plate facilitate connection with shock absorbers, making the assembly of the balance beam and shock absorbers more convenient and improving production and installation efficiency.

[0010] Preferably, the main body of the balance beam is internally welded with a first reinforcing plate and a second reinforcing plate. The first reinforcing plate is V-shaped and fixedly installed on the base plate. The top of the first reinforcing plate is fixedly connected to the bottom of the bushing. Several second reinforcing plates are provided. The outer wall of the bushing is fixedly connected to the top plate and the base plate through the second reinforcing plates. At the connection between the bushing and the base plate and the top plate, the strength and rigidity of these key parts are effectively enhanced. The V-shaped first reinforcing plate matches the shape of the main body of the balance beam, better adapts to the distribution and transmission of force, and improves the deformation resistance of the entire balance beam.

[0011] Preferably, limit pads are detachably installed at both ends of the horizontal section of the base plate. The limit pads are located on the outside of the outer vertical plate, and the edges of the limit pads extend outward from the base plate. This is used to prevent excessive impact from damaging the balance beam structure when the balance beam swings. A limit seat is provided at a corresponding position on the frame. Under extreme working conditions, this will protect the balance beam to avoid direct impact on the balance beam and effectively improve the service life of the balance beam.

[0012] Preferably, lifting lugs are fixed on the outer walls at both ends of the top plate, which facilitates the hoisting and installation of the balance beam. During the production, transportation and installation of the balance beam, the lifting lugs make it easier to use lifting equipment, improve work efficiency and ensure safety during the installation process.

[0013] This utility model provides a suspension system, including a balance beam. Each end of the balance beam is fixedly connected to two adjacent axles via a shock absorber. The balance beam's bushing is hinged to a balance beam bracket via a balance shaft assembly. The balance beam bracket is fixedly mounted on the vehicle frame using a three-point fixing method, facilitating easy assembly and disassembly during maintenance and replacement, greatly improving maintenance efficiency. With the combined action of tapered rubber bearings and shock absorbers at both ends, the balance beam achieves better shock absorption and stability. The tapered rubber bearings provide a certain degree of flexible support, absorbing longitudinal and lateral vibrations from the beam, reducing vibrations caused by loads or external impacts, and preventing excessive displacement or stress in the beam. The shock absorbers at both ends are primarily responsible for reducing end-effector movement of the beam, especially under unbalanced loads or external disturbances, ensuring the balance of the beam.

[0014] As can be seen from the above technical solutions, the advantages of this utility model are:

[0015] 1. The balance beam has a V-shaped main body, which can better distribute the bending stress generated during vehicle operation. The V-shaped structure can also provide higher structural stability, prevent excessive deformation under vertical and lateral forces, and maintain the overall stiffness of the balance beam. At the same time, the balance beam adopts a box-shaped cross-section, which can provide good bending and torsional resistance. It can not only increase strength and stiffness and reduce overall weight, but also effectively distribute stress and help to withstand loads in all directions. The internal reinforcing plates further enhance the structural strength of the balance beam and extend its service life.

[0016] 2. The bushing contains a coaxial first mounting surface and a second mounting surface. The diameter of the first mounting surface gradually decreases towards the second mounting surface, which facilitates the precise installation and positioning of the tapered rubber bearing and ensures its stable operation. The symmetrically arranged tapered first mounting surface facilitates the connection with two oppositely arranged tapered rubber bearings. When the two tapered rubber bearings are subjected to forces in various directions, they can distribute and buffer the force more evenly, improving the shock absorption effect and overall stability, while also preventing damage to the balance beam and balance shaft.

[0017] 3. The axle is connected to the frame using a three-point fixing method, which facilitates easy assembly and disassembly during maintenance and replacement, greatly improving maintenance efficiency. The balance beam, with the combined action of tapered rubber bearings and shock absorbers at both ends, can achieve better shock absorption and stability. The tapered rubber bearings provide a certain degree of flexible support, which can absorb longitudinal and lateral vibrations from the beam, reduce vibrations caused by loads or external impacts, and prevent excessive displacement or stress in the beam. The shock absorbers at both ends are mainly responsible for reducing the end movement of the beam, especially under unbalanced loads or external disturbances, to ensure the balance of the beam. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, the 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.

[0019] Figure 1 This is a structural schematic diagram of the balance beam according to one or more embodiments of the present invention (with the outer vertical plate on one side hidden).

[0020] Figure 2 This is a cross-sectional structural diagram of the connection between the balance beam and the balance shaft assembly according to one or more embodiments of the present invention.

[0021] Figure 3 This is a structural schematic diagram of a suspension system according to one or more embodiments of the present invention (the vehicle frame and balance beam bracket are not shown).

[0022] The components represented by the various reference numerals in the diagram are:

[0023] 1. Top plate; 2. Bottom plate; 3. Outer vertical plate; 4. Blocking plate; 5. Lifting lug; 6. Limiting pad; 7. First reinforcing plate; 8. Bushing; 9. Second reinforcing plate; 10. First mounting surface; 11. Second mounting surface; 12. Axle; 13. Shock absorber; 14. Balance shaft; 15. Balance beam bracket; 16. Center bolt; 17. Tapered rubber bearing; 18. End cover bracket. Detailed Implementation

[0024] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0025] Example 1

[0026] In a typical embodiment of this utility model, such as Figures 1-2 As shown, a balance beam is proposed, comprising: a balance beam body, the balance beam body being V-shaped and having a box-shaped cross-section, the balance beam body including: a top plate 1, a bottom plate 2, an outer vertical plate 3, a blocking plate 4, a first reinforcing plate 7, a bushing 8, and a second reinforcing plate 9, wherein the bottom plate 2 is a V-shaped bent plate structure, the two ends of the bottom plate 2 having horizontal sections, the horizontal sections having several mounting holes for fixed connection with the shock absorber 13 through the horizontal sections, the two ends of the bottom plate 2 being welded and fixed with blocking plates 4, which can close the ends of the balance beam 1 to prevent the internal structure from being exposed or damaged, the tops of the two blocking plates 4 being fixedly connected through the top plate 1, the top plate 6 being welded and fixed to the blocking plates 4, and two outer vertical plates 3 being provided, the two outer vertical plates 3 being welded and fixed between the top plate 1 and the bottom plate 2 to cooperate with the blocking plates 4 to form the side plates of the balance beam.

[0027] The balance beam has a V-shaped main body, which can better distribute the bending stress generated during vehicle operation. The V-shaped structure can also provide higher structural stability, prevent excessive deformation under vertical and lateral forces, and maintain the overall stiffness of the balance beam. At the same time, the balance beam adopts a box-shaped cross-section, which can provide good bending and torsional resistance. It can not only increase strength and stiffness and reduce overall weight, but also effectively distribute stress and help to withstand loads in all directions.

[0028] Lifting lugs 5 are welded and fixed to the outer walls at both ends of the top plate 1 to facilitate the hoisting of the entire balance beam. A bushing 8 is welded and fixed to the middle position of the balance beam body for rotational connection with the balance shaft assembly. The bushing 8 is welded and fixed to the middle position of the two outer vertical plates 3, and both ends of the bushing 8 pass through the two outer vertical plates 3 of the balance beam. A first reinforcing plate 7 and a second reinforcing plate 9 are welded and fixed to the inside of the balance beam body. The first reinforcing plate 7 is V-shaped and is welded and fixed to the bottom plate 2, so that the balance beam can evenly distribute stress when bearing longitudinal loads and reduce local stress. Stress concentration improves bending stiffness, and the top of the first reinforcing plate 7 is provided with an arc-shaped groove to support the bushing 8. The first reinforcing plate 7 is fixedly connected to the bottom of the bushing 8 by welding. Several second reinforcing plates 9 are provided, and the several second reinforcing plates 9 are distributed at intervals around the bushing 8. The outer wall of the bushing 8 is fixed to the top plate 1 and the bottom plate 2 by welding through the second reinforcing plates 9. This not only ensures that the bushing 8 has high positioning accuracy and installation accuracy, but also improves the local stiffness of the bushing 8 and the overall strength of the balance beam structure, and avoids damage to the key parts of the balance beam due to excessive stress.

[0029] like Figure 1 As shown, several bolt holes are provided at both ends of the horizontal section of the base plate 2, so that the limiting pad 6 can be detachably installed by bolt connection. The limiting pad 6 is located on the outside of the outer upright plate 3, and the edge of the limiting pad 6 extends outward from the base plate 2 to prevent the impact from being too great and damaging the balance beam structure when the balance beam swings. A limiting seat is provided at the corresponding position on the frame, which will play a role in protecting the balance beam under extreme working conditions to avoid direct impact on the balance beam and effectively improve the service life of the balance beam.

[0030] The bushing 8 contains an installation space, such as Figure 1 As shown, the bushing 8 contains a first mounting surface 10 and a second mounting surface 11 inside. The first mounting surface 10 and the second mounting surface 11 are coaxially arranged. The first mounting surface 10 is a tapered surface. There are two first mounting surfaces 10, which are symmetrically arranged on both sides of the second mounting surface 11. The second mounting surface 11 is used to limit the distance between the two first mounting surfaces 10, so as to ensure the positioning and installation accuracy of the tapered rubber bearing 17 and the end cover bracket 18.

[0031] The diameter of the first mounting surface 10 gradually decreases towards the second mounting surface 11. The minimum diameter of the first mounting surface 10 is the same as the diameter of the second mounting surface 11. The first mounting surface 10 is used for the fixed installation of the tapered rubber bearing 17. The bushing 8 cooperates with the tapered rubber bearing 17 to position the end cover bracket 18. The end cover bracket 18 has a balance shaft 14 in the middle, which can keep the balance shaft 14 stable during operation and reduce the impact on the balance shaft 14. Through the bushing 8, the force from the road surface can be evenly transmitted to the end cover bracket 18 to reduce the risk of structural fatigue and damage.

[0032] The tapered rubber bearing 17, used in conjunction with the bushing 8, has good elasticity and shock absorption properties, which can absorb and mitigate vibrations and impacts caused by vehicle operation and uneven road surfaces, thereby protecting the balance beam and related components from excessive stress. At the same time, since the opening of the bushing 8 faces outward (i.e., the maximum diameter end of the bushing 8 is set outward), it is convenient to install and remove the tapered rubber bearing 17 when replacing it.

[0033] Example 2

[0034] In a typical embodiment of this utility model, such as Figure 3 As shown, a balanced suspension system is proposed, including: the balance beam as in Embodiment 1, a shock absorber 13, a balance shaft assembly, and a balance beam bracket 15. The balance beam bracket 15 is fixedly installed on the vehicle frame by welding or other means for connecting the balance beam to the vehicle frame. Both ends of the balance beam are fixedly connected to the axles 12 (such as the middle and rear axles) at both ends via a shock absorber 13. The middle position of the balance beam is hinged to the balance beam bracket 15 via the balance shaft assembly. The balance shaft assembly includes two end cap brackets 18, a balance shaft 14, and a tapered rubber bearing 17. The two end cap brackets 18 are arranged opposite each other and are sleeved on the balance shaft 14. Externally, the end cap bracket 18 and the balance shaft 14 are fitted together. The two end cap brackets 18 are connected by a center bolt 16, which passes through the inside of the balance shaft 14. One end of the center bolt 16 is threadedly connected to a self-locking nut, and the other end is threadedly connected to a threaded plate stop. The balance shaft 14 is limited and fixed by the cooperation of the end cap brackets 18 and the center bolt 16. A tapered rubber bearing 17 is installed on each end cap bracket 18, which is rotatably connected to the bushing 8 of the balance beam. The end cap bracket 18 is fixedly connected to the balance beam bracket 15 on the frame by fixing bolts.

[0035] The axle 12 is connected to the frame by a three-point fixing method, which uses the middle balance beam bracket 15 and the shock absorbers 13 at both ends to fix the balance beam. This makes the axle easy to install and remove during maintenance and replacement, and greatly improves maintenance efficiency.

[0036] With the combined action of the tapered rubber bearings 17 and the shock absorbers 13 at both ends, the balance beam can achieve better vibration reduction and stability. The tapered rubber bearings 17 provide a certain degree of flexible support, which can absorb longitudinal and lateral vibrations from the beam, reduce vibrations caused by loads or external impacts, and prevent the beam from generating excessive displacement or stress. The shock absorbers 13 at both ends are mainly responsible for reducing the end movement of the beam, especially under unbalanced loads or external disturbances, to ensure the balance of the beam.

[0037] 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 balanced beam comprising: The balanced beam body is characterized in that the balanced beam body is V-shaped, the balanced beam body is a box-shaped section, an axle sleeve (8) is fixedly arranged at a middle position of the balanced beam body, the inside of the axle sleeve (8) contains a mounting space for mounting a conical rubber bearing (17), and a plurality of reinforcing plates are fixedly arranged inside the balanced beam body.

2. The balance beam according to claim 1, characterized in that The inside of the axle sleeve (8) contains a coaxial first mounting surface (10) and a second mounting surface (11), the first mounting surface (10) is a conical surface and is provided in two, the two first mounting surfaces (10) are symmetrically arranged on both sides of the second mounting surface (11), and the diameter of the first mounting surface (10) gradually decreases towards the direction close to the second mounting surface (11).

3. The balance beam according to claim 1, wherein, The balanced beam body comprises a top plate (1), a bottom plate (2), an outer vertical plate (3) and a blocking plate (4) fixedly connected, the bottom plate (2) is a V-shaped bent plate structure, the two ends of the bottom plate (2) contain horizontal sections, and a plurality of mounting holes for connecting shock absorbers (13) are arranged on the horizontal sections.

4. The balance beam according to claim 3, characterized in that The inside of the balanced beam body is welded with a first reinforcing plate (7) and a second reinforcing plate (9), the first reinforcing plate (7) is V-shaped, the first reinforcing plate (7) is fixedly arranged on the bottom plate (2), the top of the first reinforcing plate (7) is fixedly connected with the bottom of the axle sleeve (8), and the second reinforcing plate (9) is provided in a plurality of.

5. The balance beam according to claim 3, wherein, A limiting pad (6) is detachably arranged at the horizontal sections of the two ends of the bottom plate (2), the limiting pad (6) is located outside the outer vertical plate (3), and the edge of the limiting pad (6) extends outwardly beyond the bottom plate (2).

6. The balance beam of claim 3, wherein, A lifting lug (5) is fixedly arranged on the outer wall of the two ends of the top plate (1).

7. A suspension system characterized by, The balanced beam comprises: The balanced beam as claimed in any one of claims 1-6, two ends of the balanced beam are fixedly connected with two adjacent vehicle axles (12) through a shock absorber (13) respectively, the axle sleeve (8) of the balanced beam is hingedly connected with a balanced beam support (15) through a balance shaft (14) assembly, and the balanced beam support (15) is fixedly arranged on a vehicle frame.

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