CN219339128U

CN219339128U - Non-independent oil gas suspension system

Info

Publication number: CN219339128U
Application number: CN202223540728.2U
Authority: CN
Inventors: 嵇岩; 李伟; 陈勇; 任伟东; 邓伟; 杨世琦; 杨志俊
Original assignee: Beiben Trucks Group Co Ltd
Current assignee: Beiben Trucks Group Co Ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-07-14
Anticipated expiration: 2032-12-29

Abstract

The utility model relates to a non-independent oil gas suspension system, which comprises a guide mechanism, an integrated hydraulic adjusting system and a multi-channel control unit, wherein the guide mechanism is connected with the integrated hydraulic adjusting system; the guide mechanism is divided into a single-bridge guide mechanism and a double-bridge guide mechanism, and the single-bridge guide mechanism is arranged on the frame and positioned at a first bridge position, a second bridge position and a fifth bridge position and is used for realizing the movement of the axle relative to the frame; the double-bridge guide mechanism is arranged on the frame and is positioned at three and four bridge positions and is used for realizing the movement of the driving axle (14) relative to the frame (10). The axle adopts the integral non-independent axle, and the whole vehicle suspension adopts the oil-gas suspension, so that the requirements of large load, smoothness, jumping and vehicle height can be simultaneously met.

Description

Non-independent oil gas suspension system

Technical Field

The utility model belongs to the technical field of heavy truck suspensions, and particularly relates to a non-independent hydro-pneumatic suspension system, in particular to a non-independent hydro-pneumatic suspension for a heavy truck.

Background

Currently, a plate spring suspension and an air suspension are mainly adopted in a commercial heavy truck suspension, and independent hydro-pneumatic suspensions are developed and used in some years.

The leaf spring suspension and the air suspension have mature structures and higher reliability, but the natural frequency changes along with the change of the load, so that the requirements of various performances related to the vehicle are not easily met. The independent hydro-pneumatic suspension can meet the requirements of large jumping and smoothness of a severe road surface, but is not suitable for the use of large load of a vehicle.

Disclosure of Invention

The utility model provides development and application of a non-independent oil gas suspension on a heavy truck, solves the defects of the prior art, and meets the requirements of large load and high smoothness of a vehicle.

In order to solve the technical problems, the utility model provides a non-independent oil-gas suspension system, which is characterized in that: comprises a single-bridge guiding mechanism, a double-bridge guiding mechanism and a hydro-pneumatic spring vibration damper; the single-bridge guide mechanism is arranged on the frame and positioned at the first, second and fifth bridge positions, and the double-bridge guide mechanism is arranged on the frame and positioned at the third and fourth bridge positions.

The beneficial effects are that: the utility model can be realized through a non-independent oil-gas suspension system:

1. the vehicle is loaded with a large load.

3. The natural frequency of the vehicle suspension does not change along with the change of the load, and the vehicle suspension has ideal smoothness.

4. The position of the center of the vehicle axle from the frame does not change with the change of the load.

5. The whole vehicle (front axle, middle and rear axle) is matched with the hydro-pneumatic suspension.

6. The height of the vehicle is adjustable.

7. When the hydraulic legs of the vehicle are set up, the axle tires can be lifted.

Drawings

FIG. 1 is a schematic diagram of a single-bridge guide mechanism

FIG. 2 is a schematic diagram of a double-bridge guide mechanism structure

FIG. 3 is a top view of the single bridge guide mechanism

Fig. 4 is a top view of the dual bridge guide mechanism.

Wherein: 1. the vehicle comprises a support frame 2 with a thrust rod, a frame bracket 2 with an upper longitudinal thrust rod, an upper bridge support seat 4, an oil gas spring 5, a single-bridge oil gas spring upper support seat 6, a bridge lower support seat 7, a bridge 8, bolts 9, a lower longitudinal thrust rod 10, a frame 11, a transverse thrust rod 12, an upper support seat 13 with an oil gas spring, an intermediate support seat 14, a bridge 15, a lower bridge support seat 16, a double-bridge lower longitudinal thrust rod 17, a cover plate 18, a U-shaped bolt 19, a V-shaped thrust rod 21, and a V-shaped thrust support seat

Detailed Description

To make the objects, contents and advantages of the present utility model more apparent, the following detailed description of the specific embodiments of the present utility model will be given.

The utility model provides a non-independent oil gas suspension system, which comprises a single-bridge guide mechanism, a double-bridge guide mechanism, an integrated hydraulic adjusting system and a multi-channel control unit, wherein the single-bridge guide mechanism is arranged on the single-bridge guide mechanism;

the main elastic element is a hydro-pneumatic spring; the guiding mechanism realizes guiding and power transmission by a longitudinal thrust rod and a mounting support, and the transverse displacement of the axle is limited by a transverse thrust rod or a V-shaped thrust rod;

the integrated hydraulic adjusting system adjusts the driving gesture, realizes the function of balancing suspension, and realizes the function of lifting wheels by tires; the multichannel control unit can automatically control all electromagnetic valve groups of the hydraulic system under the short stop state of the vehicle, and the height of the vehicle can be adjusted.

Wherein the guide mechanism is divided into a single-bridge guide mechanism and a double-bridge guide mechanism. The single-axle guide mechanism (figure 1) is arranged on the frame and positioned at a first axle position, a second axle position and a fifth axle position and is used for realizing the movement of the corresponding axle (7) relative to the frame (10); the double-axle guide mechanism (balance suspension) is arranged on the frame and positioned at three and four axle positions and is used for realizing the movement of the corresponding axle (14) relative to the frame (10).

The single-bridge guide mechanism comprises an oil gas spring (4), an upper longitudinal thrust rod (2), a lower longitudinal thrust rod (9), a thrust rod frame bracket assembly (1) and a transverse thrust rod (11); the oil gas spring (4) is connected with the single-bridge oil gas spring upper support (5) and the bridge lower support (6) through pin shafts; the upper bridge support (3) and the lower bridge support (6) are respectively connected and fastened with the axle (7) through bolts; the front end and the rear end of the upper longitudinal thrust rod (2) are respectively hinged with the thrust rod frame bracket assembly (1) and the bridge upper support (3); the front end and the rear end of the lower longitudinal thrust rod (9) are respectively hinged with the thrust rod frame bracket assembly (1) and the bridge upper support (3). The thrust rod frame support assembly (1) and the single-bridge oil gas sprung support (5) are fixedly arranged on the outer side of the frame (10); one end of the transverse thrust rod (11) is hinged with the frame, and the other end is hinged with the axle.

The four-sided mechanism formed by the upper longitudinal thrust rod (2) and the lower longitudinal thrust rod (9) realizes the movement of the axle (7) relative to the frame (10), and the oil gas spring (4) realizes the bearing vibration reduction function through the single-axle oil gas spring upper support (5) fastened to the frame and the axle lower support (6) fastened to the axle, and the transverse thrust rod (11) limits the transverse displacement of the axle.

The double-bridge guide mechanism comprises a double-bridge oil gas spring (22), a double-bridge lower longitudinal thrust rod (16), a V-shaped thrust rod (20) and a V-shaped thrust bridge support (21); the double-bridge oil gas spring (22) is connected with the double-bridge oil gas spring upper support (12) and the double-bridge lower support (15) through pin shafts; the upper bridge cover plate (17) and the lower double bridge support (15) are connected with the driving axle (14) through double-bridge U-shaped bolts; the center end of the V-shaped thrust rod (20) is connected with a V-shaped push-axle support (21) fixed on an axle, and the two free ends of the V-shaped thrust rod (20) are connected with a V-shaped push-axle support (19) fixed on a frame; the front end and the rear end of the double-bridge lower longitudinal thrust rod (16) are respectively hinged with the middle support (13) and the double-bridge lower support (15). The middle support (13) is fixed on the frame.

The motion of the driving axle (14) relative to the frame (10) is realized through a quadrilateral mechanism formed by the V-shaped thrust rod (20) and the double-axle lower longitudinal thrust rod (16), and the hydro-pneumatic spring (22) realizes the bearing vibration reduction function through the double-axle hydro-pneumatic spring upper support (12) fastened to the frame and the double-axle lower support (15) fastened to the axle.

The integrated hydraulic adjusting system mainly integrates the existing power unit (comprising a pump and an oil tank), a valve group (comprising a main valve, a vehicle posture valve, a wheel lifting valve, a stop valve, a flow valve, a hydraulic oil cylinder and an energy accumulator), monitors the vehicle height and working pressure information in real time by an additional electric control unit, realizes the adjustment of the vehicle body postures such as lifting and heightening of the whole vehicle manually and automatically, obtains higher vehicle passing capacity and stability, and has the wheel lifting function of an axle tire.

The multichannel control unit can automatically control each electromagnetic valve group of the hydraulic system under the short stop state of the vehicle, oil filling and oil discharging of the hydro-pneumatic suspension are completed, vehicle height information and pressure information are collected through a hydro-pneumatic spring built-in displacement sensor, a pressure sensor and the like to serve as feedback signals, the designated vehicle body height and leveling are realized, so that the requirements of transportation, running and off-road states are met, and in addition, a driver can manually adjust the vehicle pose to meet specific operation requirements.

The utility model relates to a non-independent oil gas suspension system, wherein an axle adopts an integral non-independent axle, and all vehicle suspensions (single-axle and middle-rear axle balance suspensions) adopt oil gas suspensions, so that the requirements of large load, smoothness, jumping and vehicle height can be simultaneously met.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and variations should also be regarded as being within the scope of the utility model.

Claims

1. A non-independent hydro-pneumatic suspension system characterized by: comprises a single-bridge guiding mechanism, a double-bridge guiding mechanism and a hydro-pneumatic spring vibration damper; the single-bridge guide mechanism is arranged on the frame and positioned at the first, second and fifth bridge positions, and the double-bridge guide mechanism is arranged on the frame and positioned at the third and fourth bridge positions.

2. A non-independent hydro-pneumatic suspension system as defined by claim 1 wherein: the integrated hydraulic adjusting system is used for adjusting the running gesture, realizing the function of balancing the suspension, and realizing the function of lifting the tire; the multichannel control unit can automatically control all electromagnetic valve groups of the hydraulic system under the short stop state of the vehicle, and the height of the vehicle can be adjusted.

3. A non-independent hydro-pneumatic suspension system as defined by claim 1 wherein: the single-bridge guide mechanism comprises an oil gas spring (4), an upper longitudinal thrust rod (2), a lower longitudinal thrust rod (9), a thrust rod frame bracket assembly (1) and a transverse thrust rod (11); the oil gas spring (4) is hinged with the single-bridge oil gas spring upper support (5) and the bridge lower support (6) respectively; the upper bridge support (3) and the lower bridge support (6) are fixedly connected with the corresponding axles; the front end and the rear end of the upper longitudinal thrust rod (2) are respectively hinged with the thrust rod frame bracket assembly (1) and the bridge upper support (3); the front end and the rear end of the lower longitudinal thrust rod (9) are respectively hinged with the thrust rod frame bracket assembly (1) and the bridge upper support (3); the thrust rod frame support assembly (1) and the single-bridge oil gas sprung support (5) are fixedly arranged on the outer side of the frame (10); one end of the transverse thrust rod (11) is hinged with the frame, and the other end is hinged with the corresponding axle.

4. A non-independent hydro-pneumatic suspension system as defined by claim 3 wherein: the upper longitudinal thrust rod (2) and the lower longitudinal thrust rod (9) form a quadrilateral mechanism, so that the corresponding axle moves relative to the frame (10).

5. A non-independent hydro-pneumatic suspension system as defined by claim 1 wherein: the double-bridge guide mechanism comprises a double-bridge oil gas spring (22), a double-bridge lower longitudinal thrust rod (16), a V-shaped thrust rod (20) and a V-shaped thrust bridge support (21); two ends of the double-bridge oil gas spring (22) are respectively hinged with the double-bridge oil gas spring upper support (12) and the double-bridge lower support (15); the upper bridge cover plate (17) and the lower double bridge support (15) are fixedly connected with the corresponding driving axles; the center end of the V-shaped thrust rod (20) is connected with a V-shaped push axle support (21) fixed on a corresponding drive axle, and the two free ends of the V-shaped thrust rod (20) are connected with a V-shaped cart frame support (19) fixed on a cart frame; the front end and the rear end of the double-bridge lower longitudinal thrust rod (16) are respectively hinged with the middle support (13) and the double-bridge lower support (15).

6. The non-independent hydro-pneumatic suspension system of claim 5 wherein: the quadrilateral mechanism is formed by a V-shaped thrust rod (20) and a double-bridge lower longitudinal thrust rod (16).

7. The non-independent hydro-pneumatic suspension system of claim 5 wherein: the middle support (13) is fixed on the frame.