Double-Wheel Trailer Layout for Higher Axle Capacity and Climb Angle
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Solution Overview
Problem
Existing trailers for transporting heavy goods in Anglo-Saxon countries face limitations such as a maximum axle capacity of 21 t, limited lower central floor width, safety concerns for operators due to insufficient platforms, and suboptimal angle of climb, which do not meet legal requirements for increased loading height and weight support.
Innovation Solution
A trailer equipped with sets of double wheels, each set comprising four wheels with a diameter of 70-85 cm, spaced 130-140 cm apart, providing increased axle capacity, greater floor width, enhanced safety through a wider platform, and improved angle of climb due to smaller wheel diameter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If single wheels are used, then the structure is simpler, but the axle capacity is limited to 21 t
Solution Approach 1:
The patent combines multiple wheels (two or more) into a single wheel set configuration, where wheels are arranged side-by-side on the same rotation axle. This merging of multiple wheel elements allows the trailer to support higher axle capacities (up to 24 t) while maintaining structural efficiency and meeting legal requirements for heavy goods transport in Anglo-Saxon countries.
2Weight of moving object
If larger diameter wheels are used, then the axle capacity increases, but the angle of climb becomes steeper and less optimal
Solution Approach 1:
The patent optimizes the wheel diameter parameter within a specific range (70-85 cm) to achieve the desired balance between axle capacity and angle of climb. By carefully selecting and adjusting this critical parameter, the design achieves both high load-bearing capability and optimal climbing performance for cars being transported.
3Reliability
If the lower central floor width is increased, then the operator safety improves, but the wheel width must be reduced
Solution Approach 1:
The patent transitions from a single-wheel configuration to a multi-wheel side-by-side configuration, effectively utilizing the lateral dimension. This dimensional change allows the trailer to achieve both a wider lower central floor (providing safer operator platform) and the required axle capacity, as the load is distributed across multiple wheels rather than requiring individually wider wheels.
4Weight of moving object
If the distance between axles is increased to greater than 1300 mm, then the axle capacity distribution improves, but the trailer length increases
Solution Approach 1:
The patent optimizes the distance between axles to be greater than 1300 mm, carefully adjusting this critical dimensional parameter to achieve proper load distribution and meet axle capacity requirements while minimizing the overall trailer length impact. This parameter optimization allows the design to satisfy both structural and operational requirements.
Data Source
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AI summary
A trailer (4) for the transport of goods, in particular cars, is described, comprising at least three sets of transport wheels, each of the sets being composed of four wheels (7A, 7B, 7C, 7D) placed side by side on the same rotation axle, two first wheels (7A, 7C) placed on one side of the trailer (4) with respect to its direction of travel, and two second wheels (7B, 7D) placed on the opposite side of the trailer (4), the rotation axle of a first of the sets of wheels being placed at a distance variable from 130 cm to 140 cm from the rotation axle of a second of the sets of wheels, and the rotation axle of a second of the sets of wheels being placed at a distance variable from 130 cm to 140 cm from the rotation axle of a third of the wheel sets. A vehicle (1) equipped with this trailer (4) is also described.