Bogie Axle Assembly With Dual-Joint Terrain Stabilization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Off-highway vehicles, such as forestry machines, face challenges in maintaining drivability on rough terrain due to the limited ability of existing bogie axle assemblies to independently adjust and stabilize their position relative to the vehicle frame.
Innovation Solution
A bogie axle assembly featuring a rigid link arm with two joints, allowing for two degrees of freedom of movement, coupled with swivel control devices and a ground engaging structure, enables precise adjustment and stabilization of the bogie position relative to the vehicle frame, improving drivability on uneven surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional tandem axle with single joint bogies is used, then the structure is simple, but the ability to independently adjust and stabilize bogie position relative to the vehicle frame is limited
Solution Approach 1:
The bogie assembly is segmented into multiple independent components: a rigid link arm with first joint connecting to vehicle frame, a bogie unit with second joint connecting to the link arm. This segmentation allows each segment to move and adjust independently, providing two degrees of freedom for position adjustment while maintaining manageable structural complexity through modular design.
Solution Approach 2:
The system transitions from a static, fixed-position bogie to a dynamic system with two articulation joints that enable continuous adjustment of the bogie position and orientation relative to the vehicle frame. The first joint allows rotation of the link arm, and the second joint allows rotation of the bogie relative to the link arm, creating a dynamically adaptable suspension system.
2Adaptability or versatility
If the bogie is rigidly fixed to the vehicle frame, then the structure is stable, but the vehicle cannot adapt to rough terrain effectively
Solution Approach 1:
The system employs two rotational joints that provide dynamic adjustment capability while maintaining stability through controlled movement. The first joint rotates the link arm relative to the vehicle frame, and the second joint rotates the bogie relative to the link arm, allowing the system to adapt to terrain variations while the vehicle frame remains stable.
Solution Approach 2:
The rigid link arm acts as an intermediary element between the vehicle frame and the bogie unit. It transmits forces and movements while allowing angular adjustments at both ends through the two joints, effectively mediating between the stable vehicle frame and the adaptable bogie assembly.
3Adaptability or versatility
If a single joint connects the bogie to the vehicle frame, then the device complexity is low, but two degrees of freedom of movement are not achieved
Solution Approach 1:
The connection system is divided into two separate rotational joints: the first joint connecting the link arm to the vehicle frame, and the second joint connecting the bogie to the link arm. This segmentation provides two independent degrees of freedom, allowing the system to achieve complex positioning capabilities while keeping each individual joint relatively simple in design.
Data Source
AI summary
A bogie axle assembly for a vehicle, in particular for an off-highway vehicle such as a forestry machine, the bogie axle assembly comprising: a rigid link arm; a first joint disposed on the link arm for pivotally coupling the link arm to a vehicle frame; a second joint disposed on the link arm, at a distance from the first joint; a bogie pivotally coupled to the link arm via the second joint; and a ground engaging structure comprising one or more wheels rotatably mounted on the bogie. The present disclosure further relates to a vehicle comprising said bogie axle assembly.