Air Suspension Device

Technical Field

The utility model belongs to the field of automotive air suspension, and specifically relates to an air suspension device.

Background Technology

With the rapid development of industry and expressways, special-purpose vehicles have developed quickly, such as tank trucks. These vehicles significantly improve transportation efficiency, reduce labor intensity, and can meet special requirements that ordinary trucks cannot satisfy.

As tank trucks develop toward higher tonnage, it becomes necessary to increase the number of axles to ensure that the axle load does not exceed limits when the vehicle is fully loaded. However, when the vehicle is unloaded or lightly loaded, an increased number of axles leads to several disadvantages, including higher fuel consumption, increased tire wear, reduced vehicle speed, and a larger minimum turning radius.

Summary of the Invention

The purpose of this utility model is to overcome the deficiencies of the prior art and provide an air suspension device capable of lifting axles with flexible lifting and lowering performance.

Technical Solution

The technical solution adopted by the utility model is as follows:

An air suspension device comprises a frame, a lifting air bag, a load-bearing air bag, and a bent lifting arm arranged at the lower end of the frame.

The lower horizontal section of the lifting arm is connected to the lower end of the load-bearing air bag.

The upper end of the load-bearing air bag is connected to the frame through a right bracket.

The upper horizontal section of the lifting arm is fixedly connected to the axle.

One end of the lifting arm is hinged to a left bracket on the frame.

The lifting air bag is fixed to the lower end of the left bracket via an air bag bracket, which includes:

a lower lifting bracket fixed to the left bracket, and

an upper lifting bracket hinged to the left bracket.

The lower end of the lifting air bag is fixed on the lower lifting bracket.

The upper end of the lifting air bag is connected to a top block.

The top block passes through the upper lifting bracket and abuts against the lifting arm.

Additionally, a shock absorber is connected to the upper part of the left bracket via a ball joint, and the other end of the shock absorber is connected to the axle.

Beneficial Effects

The air suspension device of the utility model has the following advantages:

Under unloaded or lightly loaded conditions, single or multiple axles can be lifted, reducing tire wear and fuel consumption.

Improves maneuverability by reducing turning difficulty.

When the frame is not overloaded, the lifted axle can automatically return to its position and participate in load-bearing.

The lifting air bag reduces the load on the load-bearing air bag, prevents lateral deformation, and avoids side-to-side swinging of the lifting arm.

Enhances vehicle safety and reduces overall operating and maintenance costs.

Description of Drawings

Figure 1 is a structural schematic diagram of the utility model.

Reference numerals:

Frame

Lifting air bag

Load-bearing air bag

Lifting arm

Left bracket

Right bracket

Axle

Air bag bracket
  81. Lower lifting bracket
  82. Upper lifting bracket

Top block

Shock absorber

Detailed Description

As shown in Figure 1, the air suspension device includes a frame (1), a lifting air bag (2), a load-bearing air bag (3), and a bent lifting arm (4) arranged at the lower end of the frame.

The lower horizontal section of the lifting arm (4) is connected to the lower end of the load-bearing air bag (3).

The upper end of the load-bearing air bag (3) is connected to the frame (1) via the right bracket (6).

The upper horizontal section of the lifting arm (4) is fixedly connected to the axle (7).

One end of the lifting arm (4) is hinged to the left bracket (5) of the frame (1).

The lifting air bag (2) is fixed to the lower end of the left bracket (5) via the air bag bracket (8), which includes:

a lower lifting bracket (81) fixedly connected to the left bracket (5), and

an upper lifting bracket (82) hinged to the left bracket (5).

The lower end of the lifting air bag (2) is fixed on the lower lifting bracket (81).

The upper end of the lifting air bag (2) is connected to a top block (9).

The top block (9) passes through the upper lifting bracket (82) and abuts against the lifting arm (4).

The lifting air bag (2) reduces the load on the load-bearing air bag (3), prevents lateral deformation of the load-bearing air bag (3), and avoids lateral swinging of the lifting arm (4). The combined use of the lifting air bag (2) and the load-bearing air bag (3) enables flexible lifting and lowering of the axle (7) with high stability, improving vehicle safety and reducing overall operating and maintenance costs.

A shock absorber (10) is connected to the upper part of the left bracket (5) via a ball joint, and its other end is connected to the axle (7). The shock absorber (10) may be a twin-tube hydraulic shock absorber or a mono-tube pneumatic shock absorber, significantly improving ride comfort while reducing vibration and noise.

Under unloaded or lightly loaded conditions, the device allows single or multiple axles to be lifted, reducing tire wear and fuel consumption and improving turning performance. When the frame (1) is not overloaded, the lifted axle (7) can automatically return to its position and participate in load-bearing.

Except for the technical features described above, all other features belong to the prior art known to those skilled in the field.