Air suspension system controlled by single altitude valve

Abstract

The utility model relates to an air suspension system controlled by a single altitude valve, and solves the problems that air pressures of left and right air bags are inconsistent, one side is hard and the other side is soft, or the left and right heights of a frame are inconsistent and are difficult to adjust when a vehicle is in an idle state. The upper cover plate (5), the axle lower support (8) and the guide arm lower fixing seat (9) are connected with the axle (10) and the guide arm (11); the guide arm (11) is connected with the frame (1) through the front bracket (2); the lower end of the air spring (6) is connected with the guide arm (11), and the upper end is connected with the frame (1); the front end and the rear end of the transverse thrust rod (14) are respectively connected with the axle bracket (15) and the frame bracket (16); the upper end of the shock absorber (7) is connected with the frame (1), and the lower end is connected with the guide arm (11); the height valve (13) is mounted in the middle of the frame cross beam (12), is connected with an axle through a horizontal rod and a vertical rod, and is communicated with the left air bag and the right air bag at the same time; and the rubber buffer block (4) is arranged on the frame (1).

Description

Technical Field

[0001] The utility model relates to an air suspension system, in particular to an air suspension system controlled by a single height valve. Background Art

[0002] Currently, commercial heavy-duty truck air suspensions or composite suspensions mostly use dual height valve control, with the left and right airbags inflated and deflated by a height valve respectively to control the height.

[0003] The dual-height valve-controlled air suspension system has a mature structure and high reliability. However, when the system is unloaded, that is, when the axle load is small, the air pressure of the left and right airbags is prone to inconsistency, resulting in one side being hard and the other side being soft, or the left and right heights of the vehicle frame being inconsistent, making adjustment difficult. Utility Model Content

[0004] The utility model provides an air suspension system solution controlled by a single height valve, which solves the problems of inconsistent air pressure on the left and right airbags, one side being hard and the other side being soft, or inconsistent height of the left and right frames when the vehicle is unloaded and difficult to adjust.

[0005] The utility model is realized by the following technical solutions:

[0006] An air suspension system controlled by a single height valve includes a vehicle frame 1, a front bracket 2, bolts 3, a rubber buffer block 4, an upper cover 5, an air spring 6, a shock absorber 7, an axle lower support 8, a guide arm lower fixing seat 9, an axle 10, a guide arm 11, a frame crossbeam 12, a height valve 13, a transverse thrust rod 14, an axle bracket 15 and a frame bracket 16. The upper cover 5, the axle lower support 8 and the guide arm lower fixing seat 9 are fastened to the axle 10 and the guide arm 11 by bolts 3; the guide arm 11 is connected to the vehicle frame 1 through the front bracket 2; the lower end of the air spring 6 is connected to the guide arm 11, and the upper end is connected to the vehicle frame 1; the front and rear ends of the transverse thrust rod 14 are respectively connected. They are fastened to the axle bracket 15 and the frame bracket 16, and the movement mechanism formed by the guide arm 11 and the transverse thrust rod 14 realizes the movement of the axle 10 relative to the frame 1; the transverse thrust rod 14 limits the lateral displacement of the axle; the upper end of the shock absorber 7 is connected to the frame 1, and the lower end is connected to the guide arm 11 to attenuate the vibration of the system; the height valve 13 is installed in the middle of the frame crossbeam 12, and is connected to the axle through a horizontal rod and a vertical rod to control the relative position of the frame and the vertical height of the axle. The height valve 13 is connected to the left and right airbags at the same time through the air pipe to control the frame height; the rubber buffer block 4 is installed on the frame 1 and contacts the upper cover plate 5 when the axle jumps.

[0007] The length of the air pipe from the height valve to the air bags on both sides is equal.

[0008] The transverse thrust rod can be replaced by a V-type thrust rod.

[0009] Beneficial effects of the utility model:

[0010] 1. Use a height valve installed in the middle of the crossbeam above the axle. The number of height valves is reduced from two to one.

[0011] 2. Achieve consistent air pressure on the left and right airbags, and consistent soft and hard feel of the airbags;

[0012] 3. Whether the vehicle is empty or fully loaded, it is convenient to control the left and right height of the frame.

[0013] After the implementation of the utility model, the problems of inconsistent heights of the left and right frames, inconsistent air pressures of the left and right air bags, wrinkled or insufficient air bags, etc. can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the utility model;

[0015] Figure 2 yes Figure 1 Top view of . DETAILED DESCRIPTION

[0016] like Figure 1 、 2 As shown, this utility model features an air suspension system controlled by a single height valve. The suspended axles can be single, dual, or multiple, and the air suspension can be a full-airbag air suspension or a combined guide arm and airbag air suspension. The height valve is mounted in the middle of the crossbeam and connects to both airbags. The air pipes from the height valve to both airbags are of equal length, which moderately increases the suspension's roll stiffness.

[0017] The air suspension system controlled by a single height valve mainly includes airbag support, guide mechanism, air spring, thrust rod, shock absorber, height valve, rotary slide valve and independent gas cylinder.

[0018] The air suspension system is controlled by a single height valve. The main elastic components are air springs and guide arms. The guide mechanism is composed of guide arms, thrust rods and mounting brackets to achieve guidance and power transmission. The lateral thrust rods or V-shaped thrust rods limit the lateral displacement of the axle. The shock absorbers attenuate system vibrations. The height valve adjusts and controls the air suspension height. The rotary slide valve controls the inflation, deflation and height of the airbag. An independent gas cylinder provides the air source for the air suspension system.

[0019] The specific implementation method of the utility model is:

[0020] The air suspension controlled by a single height valve includes a frame 1, a front bracket 2, bolts 3, rubber buffer blocks 4, an upper cover 5, an air spring 6, a shock absorber 7, an axle lower support 8, a guide arm lower fixing seat 9, an axle 10, a guide arm 11, a frame cross member 12, a height valve 13, a transverse thrust rod 14, an axle bracket 15 and a frame bracket 16. The upper cover 5, the axle lower support 8 and the guide arm lower fixing seat 9 are fastened to the axle 10 and the guide arm 11 by bolts 3, transmitting the driving force and braking force of the axle to the guide arm 11; the guide arm 11 is connected to the frame 1 through the front bracket 2 to achieve guidance and force transmission; the lower end of the air spring 6 is connected to the guide arm 11, and the upper end is connected to the frame 1 through a bracket. The air spring 6 and the guide arm 11 jointly bear the load force and vibration reduction function; the front and rear ends of the transverse thrust rod 14 are fastened to the axle bracket 15 and the frame bracket 16 respectively, and are fastened to the guide arm 11, the transverse thrust rod 14 and the frame bracket 16 respectively. The motion mechanism formed by the thrust rod 14 realizes the movement of the axle 10 relative to the frame 1; the lateral thrust rod 14 limits the lateral displacement of the axle; the shock absorber 7 attenuates the system vibration; the height valve 13 is installed in the middle position of the frame crossbeam 12, and is connected to the axle through horizontal and vertical rods to control the relative position of the vertical height of the frame and the axle. The height valve is connected to the left and right airbags at the same time through the air pipe to control the frame height; the rubber buffer block 4 is installed on the frame 1 and contacts the upper cover plate 5 when the axle jumps, thereby alleviating the impact during vehicle driving and avoiding rigid contact between systems.

Claims

1. An air suspension system controlled by a single height valve, characterized by: The invention comprises a vehicle frame (1), a front bracket (2), bolts (3), a rubber buffer block (4), an upper cover (5), an air spring (6), a shock absorber (7), a lower support of the vehicle axle (8), a lower fixing seat of the guide arm (9), a vehicle axle (10), a guide arm (11), a vehicle frame crossbeam (12), a height valve (13), a transverse thrust rod (14), a vehicle axle support (15) and a vehicle frame bracket (16); the upper cover (5), the lower support of the vehicle axle (8) and the lower fixing seat of the guide arm (9) are fastened to the vehicle axle (10) and the guide arm (11) through bolts (3); the guide arm (11) is connected to the vehicle frame (1) through the front bracket (2); the lower end of the air spring (6) is connected to the guide arm (11), and the upper end is connected to the vehicle frame (1); the transverse thrust rod (14) ) The front and rear ends are respectively fastened to the axle bracket (15) and the frame bracket (16), and the movement mechanism formed by the guide arm (11) and the transverse thrust rod (14) is used to realize the movement of the axle (10) relative to the frame (1); the transverse thrust rod (14) limits the transverse displacement of the axle; the upper end of the shock absorber (7) is connected to the frame (1), and the lower end is connected to the guide arm (11) to attenuate the vibration of the system; the height valve (13) is installed in the middle position of the frame crossbeam (12), connected to the axle through a horizontal rod and a vertical rod, and controls the relative position of the vertical height of the frame and the axle. The height valve (13) is connected to the left and right air bags at the same time through the air pipe to control the height of the frame; the rubber buffer block (4) is installed on the frame (1) and contacts the upper cover plate (5) when the axle jumps.

2. The single-height valve controlled air suspension system according to claim 1, characterized in that: The length of the air pipe from the height valve to the air bags on both sides is equal.

3. The single-height valve controlled air suspension system according to claim 1, characterized in that: The lateral thrust rod is replaced by a V-type thrust rod.

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