Modular Trailer Carriage Assembly Using Huck-Bolted Beams

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Solution Overview

Problem

Existing trailer carriages require large, heavy components that are difficult to transport and assemble due to welding, leading to high transportation costs and inefficient assembly processes.

Innovation Solution

The trailer carriage design allows for separate transportation of longitudinal and cross beams using huck bolts for connection, eliminating the need for welding, thereby reducing transportation costs and enabling quick assembly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the longitudinal beams and cross beams are welded together to form a complete carriage, then the structural strength and rigidity are improved, but the transportation cost increases and logistics become difficult due to large size and weight

Engineering Contradiction:
Improvestructural strengthVSAvoidtransportation cost
Core Design Contradiction:
StrengthVSEase of manufacture

Solution Approach 1:

The carriage is divided into separate longitudinal beam assemblies and cross beam assemblies that can be manufactured and transported independently. The longitudinal beams include connecting walls with bolt holes for later assembly, allowing each component to be optimized for transportation while maintaining structural integrity when assembled.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The longitudinal beams are pre-assembled with cross beams using bolt connections before transportation. This preliminary assembly allows for easier handling and transportation compared to fully welded structures, while the final structural strength is achieved through the complete assembly process at the destination.

Inventive Principle:
Principle #10Preliminary action

2Stability of the object's composition

If the longitudinal beams and cross beams are welded together, then the structural rigidity is improved, but the assembly time and logistics complexity increase

Engineering Contradiction:
Improvestructural rigidityVSAvoidassembly time
Core Design Contradiction:
Stability of the object's compositionVSLoss of time

Solution Approach 1:

The carriage structure is segmented into modular components (longitudinal beams with connecting walls, cross beams with connecting plates) that can be independently manufactured and assembled through bolting operations, reducing assembly time compared to welding while maintaining structural rigidity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Welding operations are replaced with mechanical bolt connections (huck bolts) for assembling the longitudinal beams and cross beams. This substitution eliminates the time-consuming welding process while providing sufficient structural rigidity for the carriage application.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Strength

If welding is used to connect longitudinal beams and cross beams, then the joint strength is improved, but the manufacturing complexity and transportation difficulty increase

Engineering Contradiction:
Improvejoint strengthVSAvoidmanufacturing complexity
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The carriage is segmented into standardized modules with pre-defined connection interfaces (connecting walls and connecting plates with bolt holes). This segmentation simplifies manufacturing by allowing independent production of components and reduces transportation complexity compared to fully welded custom structures.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The connection method is changed from welding to bolting, which alters the manufacturing parameters from high-temperature joining processes to mechanical fastening operations. This parameter change reduces manufacturing complexity and transportation difficulty while maintaining adequate joint strength.

Inventive Principle:
Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The design facilitates cost-effective transportation and efficient assembly of the carriage components, enhancing flexibility and adaptability to different road conditions.

Implementation Method 1

the upper connecting plate is connected with the upper connecting wall via a first huck bolt, the lower connecting plate is connected with the lower connecting wall via a second huck bolt, and the end plate is connected with the side wall via a third huck bolt

Methodology Applied
Scientific EffectMechanical Fastening: Mechanical Fastener

Data Source

PatentUS12630228B2Trailer carriage
Publication Date: 2026.05.19 GUANGDONG FUWA HEAVY IND
  • US12630228B2 patent drawing
  • US12630228B2 patent drawing
  • US12630228B2 patent drawing

AI summary

A trailer carriage includes two longitudinal beams and at least two cross beams between the two longitudinal beams. The longitudinal beam includes a side wall, an upper connecting wall and a lower connecting wall. The cross beam includes an upper connecting plate, a lower connecting plate below the upper connecting plate, and an end plate between the upper connecting plate and the lower connecting plate. The upper connecting plate abuts against a bottom of the upper connecting wall, the lower connecting plate abuts against a top of the lower connecting wall, the end plate abuts against an inner side of the side wall. The upper connecting plate is connected with the upper connecting wall via a first huck bolt, the lower connecting plate is connected with the lower connecting wall via a second huck bolt, the end plate is connected with the side wall via a third huck bolt.