Integral Aluminum Alloy Rear Hanger — Leaf Spring Rear Bracket for Semi-Trailers

Technical Field

This utility model relates to the technical field of semi-trailer components, and more particularly to an integral aluminum alloy leaf spring rear hanger for semi-trailers.

Background Art

Driven by national policies and transportation cost pressures, market demand for lightweight commercial semi-trailers has been rapidly increasing. The energy-saving advantages of lightweight vehicles are increasingly recognized by users and have become a key purchasing factor.

Lightweighting of semi-trailers aims to reduce the curb weight as much as possible while ensuring structural strength and safety performance, thereby improving vehicle power performance, reducing fuel consumption, and lowering emissions.

However, in existing heavy-duty trucks, leaf spring hangers are designed with large mass and bulky structures to ensure sufficient strength. This increases the overall vehicle weight, wastes high-quality steel materials, and raises production costs. Additionally, the thick structure of traditional hangers limits the internal space of the frame, making assembly and installation more difficult.

Summary of the Invention

To overcome the deficiencies of the prior art, this utility model provides an integral aluminum alloy leaf spring rear hanger characterized by light weight, high strength, rapid manufacturability, and ease of assembly and installation.

To achieve the above objective, the utility model provides an integral aluminum alloy rear hanger for semi-trailer leaf springs, comprising a bracket box body and an arc-shaped wear-resistant assembly, characterized in that:

The bracket box body is an integral structure including a top plate, box side walls, reinforcing support, and bottom plate. The top plate, bottom plate, and two symmetrically arranged side walls form a cavity with a rectangular vertical cross-section.

A U-shaped reinforcing support is integrally formed at the upper part of the cavity. The left and right edges of the reinforcing support are connected to the side walls, and the open edge of the U-shape is connected to the inner surface of the top plate. The curvature of the bottom of the reinforcing support matches the curvature of the arc-shaped wear-resistant plate.

Arc-Shaped Wear-Resistant Assembly

The arc-shaped wear-resistant assembly includes:

An upper arc-shaped wear-resistant plate

Two vertically arranged wear-resistant side walls on the left and right

Each wear-resistant side wall is provided with a bolt hole. The wear-resistant assembly is connected to the box side walls via bolts.

Beneficial Effects

The use of high-strength aluminum alloy significantly reduces weight, lowering vehicle mass, fuel consumption, and operating costs.

Both the bracket box body and the wear-resistant assembly are integrally formed through one-time extrusion, making them suitable for mass production with lower manufacturing costs.

The reinforcing support enhances overall structural strength.

Description of Drawings

Figure 1: Front view of the structure

Figure 2: Partial sectional view

Reference Numerals:

Top plate

Box side wall

Reinforcing support

Arc-shaped wear-resistant assembly

Bottom plate

Bolt hole

Detailed Description

To clearly illustrate the objectives, technical solutions, and advantages of the utility model, the following detailed description is provided with reference to the accompanying drawings.

It should be understood that positional or directional terms described herein are based on the orientations shown in the drawings and are used solely for convenience of description. They do not limit the structure or application scope of the utility model.

As shown in Figures 1 and 2, the integral aluminum alloy rear hanger for semi-trailer leaf springs includes a bracket box body and an arc-shaped wear-resistant assembly (4).

The bracket box body consists of an integrally formed structure including a top plate (1), side walls (2), reinforcing support (3), and bottom plate (5). The top plate (1), bottom plate (5), and two symmetrically arranged side walls (2) form a rectangular cavity in vertical cross-section.

A U-shaped reinforcing support (3) is integrally formed at the upper portion of the cavity. Its side edges are connected to the side walls (2), and its open edge is connected to the inner surface of the top plate (1). The curvature of the bottom of the reinforcing support (3) matches that of the arc-shaped wear-resistant plate.

The arc-shaped wear-resistant assembly (4) includes an upper arc-shaped wear-resistant plate and two vertically arranged side walls, each provided with a bolt hole (6).

The wear-resistant assembly (4) is connected to the side walls (2) via bolts, with the upper surface of the arc-shaped wear-resistant plate contacting the lower surface of the reinforcing support (3).

This utility model adopts high-strength aluminum alloy, achieving lightweight construction, reduced vehicle weight, fuel savings, and lower operating costs. The integral extrusion forming process enables efficient mass production and cost reduction, while the reinforcing support enhances overall structural strength.