Leaf Spring Suspension Front Axle Lifting Device

Technical Field

This utility model belongs to the field of automotive air suspension technology, and specifically relates to a rigid suspension front axle lifting device.

Background Art

In the prior art, in order to increase the load-carrying capacity of heavy-duty trucks, manufacturers usually increase the number of axles, thereby adding more wheels. However, increasing the number of wheels inevitably accelerates tire wear during vehicle operation.

To reduce tire wear while maintaining or improving vehicle load capacity, lifting devices are commonly used. Conventional lifting devices generally consist of multiple airbags, lifting arms, and other components, resulting in complex structures and high costs, which are not conducive to the technological development of complete vehicles.

Summary of the Invention

The purpose of this utility model is to overcome the deficiencies of the prior art by providing a rigid suspension front axle lifting device capable of lifting the axle, featuring a simple structure and low cost.

Technical Solution

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

A rigid suspension front axle lifting device, comprising a frame, a leaf spring, and an axle arranged at the lower end of the frame.

One end of the leaf spring is provided with a front suspension bracket, and the other end is provided with a rear suspension bracket. An upper clamping plate is arranged above the middle portion of the leaf spring, and an axle seat plate is arranged below the leaf spring.

The axle is mounted within the clamping groove of the axle seat plate. A lower clamping plate is provided at the lower end of the axle. The upper clamping plate and the lower clamping plate are connected by U-bolts. The bottom ends of the U-bolts are fixed to the lower clamping plate.

The open ends of the U-bolts pass through the central hole of a lifting airbag and are fixed to a mounting plate. The lower end of the mounting plate is connected to the lifting airbag, and the lower end of the lifting airbag is fixed to the frame.

Beneficial Effects

The rigid suspension front axle lifting device of this utility model requires only a single lifting airbag and utilizes U-bolts to lift the axle, resulting in a simple structure and low manufacturing cost.

After the axle is lifted, tire wear is reduced and vehicle fuel consumption is lowered. Steering becomes easier during turning. The device is easy to install and operate, and can be installed on vehicles already in operation.

Description of Drawings

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

Frame

Leaf spring

Axle

Front suspension bracket

Rear suspension bracket

Upper clamping plate

Axle seat plate

Lower clamping plate

U-bolt

Mounting plate

Lifting airbag

Detailed Description

The technical solution of the utility model is further described below with reference to a specific embodiment:

As shown in Figure 1, the rigid suspension front axle lifting device comprises a frame (1), a leaf spring (2), and an axle (3) arranged at the lower end of the frame (1).

One end of the leaf spring (2) is provided with a front suspension bracket (4), and the other end is provided with a rear suspension bracket (5). An upper clamping plate (6) is arranged above the middle portion of the leaf spring, and an axle seat plate (7) is arranged below the leaf spring.

The axle (3) is installed in the clamping groove of the axle seat plate (7). A lower clamping plate (8) is provided at the lower end of the axle (3). The upper clamping plate (6) and the lower clamping plate (8) are connected by U-bolts (9). The bottom ends of the U-bolts (9) are fixed to the lower clamping plate (8).

The open ends of the U-bolts (9) pass through the central hole of the lifting airbag and are fixed to a mounting plate (10). The lower end of the mounting plate (10) is connected to the lifting airbag (11), and the lower end of the lifting airbag (11) is fixed to the frame (1).

Under the condition that the balanced suspension of a multi-axle heavy-duty truck operates normally, when the vehicle is unloaded, the lifting airbag (11) is inflated. The mounting plate (10) drives the U-bolts (9) upward, thereby lifting the axle (3).

This utility model achieves axle lifting using only one lifting airbag (11) and U-bolts (9), resulting in a simple structure and low manufacturing cost. After lifting, tire wear is reduced, fuel consumption is lowered, steering is improved, and installation and operation are convenient. The device can be installed on vehicles already in service.

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