Equalizer Beam for Semi-Trailer Suspension

Technical Field

The present utility model relates to the field of vehicle technology, and in particular to an equalizer beam for a semi-trailer suspension.

Background Art

The equalizer beam is a component mounted on the semi-trailer frame to balance the force between different axles. The edges of two sets of leaf springs on both sides of the equalizer beam are in contact, making it a primary load-transmitting component of the trailer frame. Under heavy load conditions, it is prone to wear, cracking, and other issues, which may seriously affect vehicle safety.

In the prior art, due to structural limitations, when the equalizer beam is worn and unusable, it must be removed and replaced as a whole, which is time-consuming, labor-intensive, and costly. Additionally, the arc-shaped support plates in existing designs are symmetrically arranged, resulting in only partial contact between the leaf springs and the support plates, making slipping likely and creating safety hazards.

Summary of the Invention

To solve the above technical problems, the present utility model provides an equalizer beam for semi-trailer suspension with a simple structure, strong practicality, and high wear resistance.

Technical Solution

The utility model is implemented as follows:

The equalizer beam comprises two parallel vertical plates. Between the two vertical plates are arranged an arc-shaped support plate, support rib plates, wear-resistant flat plates, reinforcing plates, and a fixing sleeve.

The arc-shaped support plates are symmetrically arranged between the two vertical plates, with their highest points located near the outer sides of the vertical plates.

Reinforcing rib plates are arranged below the arc-shaped support plates between the vertical plates.

Arc-shaped wear-resistant plates are mounted on the arc-shaped support plates and match their shape.

The fixing sleeve is located at the center between the two vertical plates.

A support rib plate is arranged above the fixing sleeve and mounted on the vertical plates.

A reinforcing plate is arranged below the fixing sleeve, formed by connecting a preset number of identical rectangular plates end-to-end.

Wear-resistant flat plates are symmetrically arranged in pairs on the inner sides of the vertical plates. These plates are provided with multiple heat dissipation holes and bolt holes, and bolts are used to fasten the wear-resistant flat plates to the vertical plates.

Further Improvements

A metal pipe is arranged inside the fixing sleeve, and a wear-resistant pipe is fixed inside the metal pipe by high-temperature sintering.

The vertical plates are provided with slots for fixing the arc-shaped support plates and arc-shaped wear-resistant plates.

Assembly holes are symmetrically arranged in pairs on the vertical plates.

The bolts are round head square neck bolts.

The arc-shaped support plates and arc-shaped wear-resistant plates are fixed together by high-temperature sintering.

Beneficial Effects

The arc-shaped wear-resistant plates and wear-resistant flat plates effectively reduce wear caused by the leaf springs.

Replaceable wear components (arc support assembly and flat wear plates) allow quick maintenance, reducing time and cost.

Heat dissipation holes improve thermal management by releasing friction heat.

The optimized position of the arc support plate prevents leaf spring slippage, enhancing safety and reliability.

The segmented reinforcing plate structure significantly improves structural strength.

Description of Drawings

Figure 1: Front structural view of the utility model

Figure 2: Cross-sectional view along A-A of Figure 1

Reference numerals:

Vertical plate

Arc-shaped support plate

Support rib plate

Wear-resistant flat plate

Reinforcing plate

Fixing sleeve

Arc-shaped wear-resistant plate

Reinforcing rib plate

Heat dissipation hole

Bolt hole

Assembly hole

Metal pipe

Wear-resistant pipe

Bolt

Detailed Description of the Embodiment

With reference to Figures 1 and 2, the structure is as described above. The working principle is as follows:

The arc-shaped wear-resistant plate mounted on the arc-shaped support plate and the wear-resistant flat plates on the inner sides of the vertical plates reduce wear caused by the leaf springs. The arc-shaped support plate and wear-resistant plate are mounted via slots on the vertical plates, while the wear-resistant flat plates are bolted to the vertical plates.

When wear becomes severe, only the arc-shaped support plate assembly and the wear-resistant flat plates need to be replaced, saving time and cost.

The heat dissipation holes effectively release heat generated by friction. The positioning of the arc-shaped support plate prevents slipping of the leaf springs, improving reliability. The segmented reinforcing plate structure greatly enhances the overall strength of the equalizer beam.

Scope of Protection

Any modifications, substitutions, or variations made by those skilled in the art based on the teachings of the present utility model, without departing from its spirit and principle, shall fall within the scope of protection of the present utility model.