Front double-bridge oil-gas spring suspension structure

Abstract

The application discloses a front double-bridge oil-gas spring suspension structure and relates to the technical field of spring suspensions. The front double-bridge oil-gas spring suspension structure comprises a vehicle frame, a first oil-gas spring suspension cylinder support assembly is fixedly connected to one end of the vehicle frame, a second oil-gas spring suspension cylinder support assembly is also fixedly connected to one end of the vehicle frame close to the first oil-gas spring suspension cylinder support assembly, an axle is arranged below the first oil-gas spring suspension cylinder support assembly, a second axle is arranged below the second oil-gas spring suspension cylinder support assembly, wheel hubs are arranged at both ends of the axle and the second axle, and a buffer assembly is arranged between the axle and the first oil-gas spring suspension cylinder support assembly and between the second axle and the second oil-gas spring suspension cylinder support assembly. The front double-bridge oil-gas spring suspension structure can improve the bearing capacity, improve the driving comfort in bad road conditions, reduce the turning radius of the mine truck, adapt to the undulating road surface in the mine area, prevent the vehicle bridge from being suspended, maximize the bearing capacity of the front double bridge, and improve the impact resistance of the front bridge under heavy load.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spring suspension, in particular to a front double-axle oil gas spring suspension structure. BACKGROUND

[0002] The front double-axle structure is mainly applied to heavy trucks, which is beneficial to improve the carrying capacity of the vehicle. At present, the front double-axle structure in China generally adopts two independent leaf spring suspension structures. This structure is applied to wide-body mine trucks, which leads to the lengthening of the wheelbase of the vehicle and the increase of the turning radius. Moreover, when used in harsh working conditions in the mine area, the two independent leaf spring suspension structures may cause the actual loads of the two axles to be inconsistent due to ground undulations and other reasons, resulting in leaf spring breakage, tire wear of the second axle and other faults, which seriously affects the use efficiency and reduces the economic benefits.

[0003] In view of the above problems, the present application provides a front double-axle oil gas spring suspension structure to solve the above-mentioned problems. SUMMARY

[0004] The present application aims to provide a front double-axle oil gas spring suspension structure to solve the problems raised in the background.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0006] A front double-axle oil gas spring suspension structure, comprising a vehicle frame, one end of the vehicle frame is fixedly connected with a first oil gas spring suspension cylinder support assembly, one end of the vehicle frame close to the first oil gas spring suspension cylinder support assembly is also fixedly connected with a second oil gas spring suspension cylinder support assembly, a shaft is arranged below the first oil gas spring suspension cylinder support assembly, a second shaft is arranged below the second oil gas spring suspension cylinder support assembly, a hub is arranged at both ends of the shaft and the second shaft, and a buffer assembly is arranged between the shaft, the first oil gas spring suspension cylinder support assembly, the second shaft and the second oil gas spring suspension cylinder support assembly.

[0007] A longitudinal thrust rod support assembly is fixedly connected to the vehicle frame at a position between the first oil gas spring suspension cylinder support assembly and the second oil gas spring suspension cylinder support assembly, and a first limiting assembly for fixing the front and rear attitudes of the shaft and the second shaft is arranged on the longitudinal thrust rod support assembly.

[0008] A horizontal thrust fixed beam assembly is arranged between the lower ends of the first oil gas spring suspension cylinder support assembly and the second oil gas spring suspension cylinder support assembly on both sides of the vehicle frame, and a second limiting assembly for limiting the left and right attitudes of the shaft and the second shaft is arranged between the horizontal thrust fixed beam assembly and the shaft and the second oil gas spring suspension cylinder support assembly.

[0009] A steering assembly for steering the hub is arranged on the shaft and the second shaft.

[0010] As a further scheme of the present application: the buffer assembly comprises oil-gas spring suspension cylinders, which are respectively arranged between the first oil-gas spring suspension cylinder support assembly and the first shaft and between the second oil-gas spring suspension cylinder support assembly and the second shaft, the upper end of the oil-gas spring suspension cylinder is rotationally connected through a suspension cylinder upper pin shaft, and the lower end of the oil-gas spring suspension cylinder is rotationally connected through a suspension cylinder lower pin shaft, and the longitudinal thrust rod support assembly is further provided with an energy storage assembly for balancing the oil-gas spring suspension cylinder.

[0011] As a further scheme of the present application: the energy storage assembly comprises an energy accumulator, which is fixedly connected to the middle position of the upper end of the longitudinal thrust rod support assembly, and the energy accumulator is in communication with the oil-gas spring suspension cylinder through an energy accumulator oil pipe.

[0012] As a further scheme of the present application: the first limiting assembly comprises a longitudinal thrust rod assembly, which is arranged at the positions on both sides of the lower end of the longitudinal thrust rod support assembly, the longitudinal thrust rod assembly is rotationally connected to the longitudinal thrust rod support assembly through a longitudinal thrust fixed pin shaft, and the end of the longitudinal thrust rod assembly away from the longitudinal thrust rod support assembly is respectively connected to the first shaft and the second shaft.

[0013] As a further scheme of the present application: the second limiting assembly comprises a transverse thrust fixed pin shaft, which is arranged at the position on one side of the transverse thrust fixed beam assembly, the transverse thrust fixed pin shaft is rotationally connected with a transverse thrust rod assembly, and the end of the transverse thrust rod assembly away from the transverse thrust fixed beam assembly is respectively rotationally connected to the first shaft and the first oil-gas spring suspension cylinder support assembly.

[0014] As a further scheme of the present application: the steering assembly comprises a steering cross rod assembly, which is arranged between the steering members of the two ends of the first shaft and the second shaft, for synchronously steering the hubs of the two ends of the first shaft and the second shaft.

[0015] As a further scheme of the present application: the first shaft and the first oil-gas spring suspension cylinder support assembly are respectively provided with a steering oil cylinder assembly for driving the hubs to steer.

[0016] As a further scheme of the present application: the longitudinal thrust rod support assembly is respectively provided with a steering straight pull rod assembly between the second shaft and the first shaft, one end of the steering straight pull rod assembly is connected to the first shaft steering arm, and the other end of the steering straight pull rod assembly is connected to the second shaft steering arm.

[0017] As a further scheme of the present application: the two ends of the steering straight pull rod assembly are connected through ball heads to the lower ends of the first shaft and the second shaft steering knuckle arms, forming a steering trapezoid.

[0018] As a further scheme of the present application: the energy accumulator oil pipe is a flexible pipe.

[0019] Compared with the prior art, the present application has the beneficial effects of:

[0020] 1、The suspension structure provided by the present application has a short wheelbase, and when passing over uneven road surfaces, the oil-gas spring suspension cylinders can flow through the accumulator equalization system to stabilize the system pressure and absorb impact forces; the gas pressures in the oil-gas spring suspension cylinders of the first axle and the second axle are equalized, the impact between the tires and the road surface is reduced, the tires do not come off the ground, the load-carrying capacity of the front double axle is exerted, and the shock resistance of the front axle is improved.

[0021] 2、The present application can improve the load-carrying capacity, improve the driving comfort in poor road conditions, and reduce the turning radius of the mine truck; and can adapt to the uneven road surfaces in the mine area, prevent the vehicle from being suspended, maximize the load-carrying capacity of the front double axle, and improve the impact resistance of the front axle when descending a slope under heavy load. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 is a structural schematic view of the present application.

[0023] Fig. 2 is a left view structural schematic view in the present application.

[0024] 1、the first axle; 2、the oil-gas spring suspension cylinder; 3、the first oil-gas spring suspension cylinder support assembly; 4、the accumulator oil pipe; 5、the accumulator; 6、the longitudinal thrust rod support assembly; 7、the second axle; 8、the steering cross rod assembly; 9、the longitudinal force rod assembly; 10、the steering straight pull rod assembly; 11、the longitudinal push fixed pin shaft; 12、the upper suspension cylinder pin shaft; 13、the lower suspension cylinder pin shaft; 14、the horizontal push fixed beam assembly; 15、the horizontal push fixed pin shaft; 16、the horizontal thrust rod assembly; 17、the vehicle frame; 18、the second oil-gas spring suspension cylinder support assembly. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0026] Please refer to Figs. 1-2The front double-bridge oil-gas spring suspension structure in the embodiment of the present application comprises a vehicle frame 17, one end of the vehicle frame 17 is fixedly connected with a first oil-gas spring suspension cylinder support assembly 3, one end of the vehicle frame 17 close to the first oil-gas spring suspension cylinder support assembly 3 is also fixedly connected with a second oil-gas spring suspension cylinder support assembly 18, a shaft 1 is arranged below the first oil-gas spring suspension cylinder support assembly 3, a second shaft 7 is arranged below the second oil-gas spring suspension cylinder support assembly 18, wheel hubs are arranged at both ends of the shaft 1 and the second shaft 7, and a buffer assembly is arranged between the shaft 1, the first oil-gas spring suspension cylinder support assembly 3, the second shaft 7 and the second oil-gas spring suspension cylinder support assembly 18. The present application can improve the carrying capacity, improve the driving comfort in bad road conditions, reduce the turning radius of the mine truck, adapt to the undulating road surface in the mining area, prevent the vehicle bridge from being suspended in the air, maximize the carrying capacity of the front double-bridge, and improve the impact resistance of the front bridge under heavy load. The buffer assembly comprises oil-gas spring suspension cylinders 2, the oil-gas spring suspension cylinders 2 are arranged between the first oil-gas spring suspension cylinder support assembly 3 and the shaft 1 and between the second oil-gas spring suspension cylinder support assembly 18 and the second shaft 7, respectively, the upper end of the oil-gas spring suspension cylinder 2 is rotationally connected through a suspension cylinder upper pin shaft 12, the lower end of the oil-gas spring suspension cylinder 2 is rotationally connected through a suspension cylinder lower pin shaft 13, and an energy storage assembly for balancing the oil-gas spring suspension cylinder 2 is further arranged on the longitudinal thrust rod support assembly 6. The energy storage assembly comprises an energy accumulator 5, the energy accumulator 5 is fixedly connected to the middle position of the upper end of the longitudinal thrust rod support assembly 6, and the energy accumulator 5 is in communication with the oil-gas spring suspension cylinder 2 through an energy accumulator oil pipe 4. The energy accumulator oil pipe 4 is a flexible pipe. Longitudinal thrust rod support assemblies 6 are designed on the left and right of the vehicle frame 17 and are bolted to the vehicle frame 17 and located between the shaft 1 and the second shaft 7, the longitudinal thrust rod support assemblies 6 are fixed through longitudinal thrust fixed pin shafts 11 to fix the shaft 1 and the second shaft 7 in front and back postures.

[0027] The vehicle frame 17 is fixedly connected with a longitudinal thrust rod support assembly 6 at a position between the first oil-gas spring suspension cylinder support assembly 3 and the second oil-gas spring suspension cylinder support assembly 18, the longitudinal thrust rod support assembly 6 is provided with a first limiting assembly for fixing the front and back postures of the shaft 1 and the second shaft 7. The first limiting assembly comprises a longitudinal force rod assembly 9, the longitudinal force rod assembly 9 is arranged at positions on both sides of the lower end of the longitudinal thrust rod support assembly 6, the longitudinal force rod assembly 9 is rotationally connected with the longitudinal thrust rod support assembly 6 through longitudinal thrust fixed pin shafts 11, and one end of the longitudinal force rod assembly 9 away from the longitudinal thrust rod support assembly 6 is connected with the shaft 1 and the second shaft 7, respectively.

[0028] The first oil-gas spring suspension cylinder support assembly 3 and the second oil-gas spring suspension cylinder support assembly 18 on both sides of the vehicle frame 17 are provided with a horizontal push fixed cross beam assembly 14 at the lower end, and the horizontal push fixed cross beam assembly 14 is provided with a second limiting component for limiting the left and right postures of the first shaft 1 and the second shaft 7 between the first shaft 1 and the second oil-gas spring suspension cylinder support assembly 18; the second limiting component comprises a horizontal push fixed pin shaft 15, the horizontal push fixed pin shaft 15 is installed on one side of the horizontal push fixed cross beam assembly 14, a horizontal push rod assembly 16 is rotatably connected to the horizontal push fixed pin shaft 15, and the horizontal push rod assembly 16 is rotatably connected to the first shaft 1 and the second shaft 7 at the end, away from the horizontal push fixed cross beam assembly 14; the horizontal push rod assembly 16 is connected to the horizontal push fixed cross beam assembly 14 and the first shaft 1 and the second shaft 7 through the horizontal push fixed pin shaft 15 at both ends, and the left and right postures of the first shaft 1 and the second shaft 7 are fixed.

[0029] The first shaft 1 and the second shaft 7 are provided with a steering component for steering the wheel hub; the steering component comprises a steering cross rod assembly 8, the steering cross rod assembly 8 is installed between the steering parts of the wheel hubs at both ends of the first shaft 1 and the second shaft 7, and is used for synchronously steering the wheel hubs at both ends of the first shaft 1 and the second shaft 7; the first shaft 1 and the first oil-gas spring suspension cylinder support assembly 3 are provided with a steering oil cylinder assembly for driving the wheel hub to steer; the longitudinal push rod support assembly 6 is provided with a steering straight pull rod assembly 10 between the second shaft 7 and the first shaft 1, one end of the steering straight pull rod assembly 10 is connected with the steering arm of the first shaft 1, and the other end of the steering straight pull rod assembly 10 is connected with the steering arm of the second shaft 7; the two ends of the steering straight pull rod assembly 10 are connected to the lower ends of the steering knuckle arms of the first shaft 1 and the second shaft 7 through ball heads, and a steering trapezoid is formed. The steering straight pull rod assembly 10 combines the steering trapezoids of the first shaft 1 and the second shaft 7, realizes synchronous steering of the front double-axle, forms an angle difference, and the steering oil cylinder assembly provides power for wheel steering.

[0030] The working principle of the present application is that the oil-gas spring suspension cylinder 2 is connected with the energy accumulator 5 through two energy accumulator oil pipes 4, the energy accumulator equalizes the system flow when the vehicle passes through the uneven road surface, stabilizes the system pressure, balances the air pressure in the oil-gas spring suspension cylinders of the first shaft and the second shaft, reduces the impact of the tire on the road surface, makes the tire not to be separated from the ground, and plays the load bearing capacity of the front double-axle and improves the anti-vibration capacity of the front axle.

[0031] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized in other specific forms without departing from the spirit or essential characteristics of the present application. Although the present application is described according to the embodiments, each embodiment only contains one technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined to form other embodiments which can be understood by those skilled in the art.

Claims

1. A front double axle oil gas spring suspension structure comprising a vehicle frame (17), characterized in that, The frame (17) is fixedly connected with a first oil gas spring suspension cylinder support assembly (3) at one end, and is also fixedly connected with a second oil gas spring suspension cylinder support assembly (18) at one end close to the first oil gas spring suspension cylinder support assembly (3); an axle (1) is arranged below the first oil gas spring suspension cylinder support assembly (3); a second axle (7) is arranged below the second oil gas spring suspension cylinder support assembly (18); wheel hubs are arranged at both ends of the axle (1) and the second axle (7); and a buffer assembly is arranged between the axle (1), the first oil gas spring suspension cylinder support assembly (3), the second axle (7) and the second oil gas spring suspension cylinder support assembly (18). The frame (17) is fixedly connected with a longitudinal thrust rod support assembly (6) at a position between the first oil gas spring suspension cylinder support assembly (3) and the second oil gas spring suspension cylinder support assembly (18); and the longitudinal thrust rod support assembly (6) is provided with a first limiting assembly for fixing the front and rear postures of the axle (1) and the second axle (7). A horizontal thrust fixed cross beam assembly (14) is arranged between the lower ends of the first oil gas spring suspension cylinder support assembly (3) and the second oil gas spring suspension cylinder support assembly (18) at both sides of the frame (17); and the horizontal thrust fixed cross beam assembly (14) is provided with a second limiting assembly for limiting the left and right postures of the axle (1) and the second axle (7) between the horizontal thrust fixed cross beam assembly (14) and the second oil gas spring suspension cylinder support assembly (18). Steering assemblies are arranged on the axle (1) and the second axle (7) for steering the wheel hubs. The buffer assembly comprises oil gas spring suspension cylinders (2), which are arranged between the first oil gas spring suspension cylinder support assembly (3) and the axle (1) and between the second oil gas spring suspension cylinder support assembly (18) and the second axle (7), respectively; the upper ends of the oil gas spring suspension cylinders (2) are rotationally connected through suspension cylinder upper pins (12); the lower ends of the oil gas spring suspension cylinders (2) are rotationally connected through suspension cylinder lower pins (13); and the longitudinal thrust rod support assembly (6) is further provided with an energy storage assembly for balancing the oil gas spring suspension cylinders (2). The first limiting assembly comprises longitudinal force rod assemblies (9), which are arranged at positions at both sides of the lower end of the longitudinal thrust rod support assembly (6); the longitudinal force rod assemblies (9) are rotationally connected with the longitudinal thrust rod support assembly (6) through longitudinal thrust fixed pins (11); and the longitudinal force rod assemblies (9) are connected with the axle (1) and the second axle (7) at positions away from the longitudinal thrust rod support assembly (6), respectively. The second limiting assembly comprises horizontal thrust fixed pins (15), which are arranged at positions at one side of the horizontal thrust fixed cross beam assembly (14); horizontal thrust rod assemblies (16) are rotationally connected with the horizontal thrust fixed pins (15); and the horizontal thrust rod assemblies (16) are rotationally connected with the axle (1) and the first oil gas spring suspension cylinder support assembly (3) at positions away from the horizontal thrust fixed cross beam assembly (14), respectively.

2. The front double axle oil gas spring suspension structure according to claim 1, characterized in that, The energy storage assembly comprises an energy accumulator (5) fixedly connected to the middle of the upper end of the longitudinal thrust rod support assembly (6), and the energy accumulator (5) is communicated with the oil-gas spring suspension cylinder (2) through an energy accumulator oil pipe (4).

3. The front double axle oil gas spring suspension structure according to claim 1, characterized in that, The steering assembly comprises a steering cross rod assembly (8) installed between the steering parts of the wheel hubs at the two ends of the first shaft (1) and the second shaft (7) for synchronously steering the wheel hubs at the two ends of the first shaft (1) and the second shaft (7).

4. The front double axle oil gas spring suspension structure according to claim 1, characterized in that, The first shaft (1) and the first oil-gas spring suspension cylinder support assembly (3) are both provided with a steering oil cylinder assembly for driving the wheel hubs to steer.

5. The front double axle oil gas spring suspension structure according to claim 1, characterized in that, The longitudinal thrust rod support assembly (6) is provided with a steering straight pull rod assembly (10) between the second shaft (7) and the first shaft (1), one end of the steering straight pull rod assembly (10) is connected with the steering arm of the first shaft (1), and the other end of the steering straight pull rod assembly (10) is connected with the steering arm of the second shaft (7).

6. The front double axle oil gas spring suspension structure according to claim 5, characterized in that, The two ends of the steering straight pull rod assembly (10) are connected to the lower ends of the steering knuckle arms of the first shaft (1) and the second shaft (7) through ball heads, forming a steering trapezoid.

7. The front double axle oil gas spring suspension structure according to claim 2, characterized in that, The energy accumulator oil pipe (4) is a flexible pipe.

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