Split Trailer Bogie Sliding Mechanism
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Solution Overview
Problem
Split trailers face limitations in weight distribution and load carrying capacity due to restricted axle positioning, leading to inefficiencies when the rear trailer part is uncoupled, as it results in an unbalanced and underutilized trailer with a short wheelbase, limiting its practicality for carrying diverse container sizes.
Innovation Solution
A split trailer design featuring a rear trailer part with a bogie that can slide longitudinally between forward and rearward positions on its chassis, allowing the wheels to be positioned optimally for both coupled and uncoupled configurations, thereby increasing the wheelbase and improving weight distribution and load carrying capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the rear trailer part is separated from the front trailer part, then the rear trailer part can be used independently, but the wheelbase becomes extremely short resulting in poor weight distribution and limited load carrying capacity
Solution Approach 1:
The bogie is made movable along the chassis of the rear trailer part, allowing it to be positioned at different locations. When the rear trailer part is separated, the bogie can be moved to a rearward position to increase the wheelbase and improve weight distribution. When coupled with the front trailer part, the bogie can be positioned forward to meet turning circle requirements.
2Ease of operation
If the axle on the rear trailer part is positioned close to the kingpin to meet turning circle requirements, then the turning circle is reduced, but the weight distribution becomes unbalanced with no weight on the kingpin
Solution Approach 1:
The bogie's position is made dynamic rather than fixed. When the trailers are coupled, the bogie is positioned forward to achieve tight turning circles. When separated, the bogie is moved rearward to achieve proper weight distribution and balance on the kingpin.
3Reliability
If the rear trailer part is left at the loading bay when separated, then it avoids regulatory issues with short wheelbase, but it reduces productivity by not utilizing the trailer for return journeys
Solution Approach 1:
The movable bogie enables the rear trailer part to be legally and practically used for return journeys by positioning the bogie rearward to achieve adequate wheelbase and proper weight distribution, thus improving productivity while maintaining regulatory compliance.
4Quantity of substance
If a rigid truck and draw-bar trailer are used to carry containers, then the load carrying capacity is sufficient, but the vehicle cannot accommodate other types of loads reducing versatility
Solution Approach 1:
The trailer system is divided into separable front and rear trailer parts that can be used independently or combined. This segmentation allows the rear trailer part to be used alone for various load types including containers, bulk materials, and other cargo, providing versatility while maintaining adequate load carrying capacity through proper bogie positioning.
Data Source
Figure 1~3
Figure 4~6
Figure 7~8
AI summary
A split trailer (1) has a front trailer part ()2 and a complementary rear trailer part (3) which can be interlocked to form a single trailer, or separated to form two individual trailers (2, 3). The rear trailer part (3) has wheels (4) mounted on associated axles (5) mounted on a bogie (6) which is slidably mounted on a chassis (7) of the rear trailer part (3) for longitudinal sliding movement between a forward positon and a rearward position on the chassis (7).