Vehicle Drive Assembly Mounting via Integrated Subframes
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Solution Overview
Problem
Military vehicles with self-supporting vehicle bodies face challenges in achieving structural rigidity for off-road mobility while maintaining a lightweight design, as traditional mounting points for drive units are complex and difficult to access, leading to increased weight and assembly complexity.
Innovation Solution
The drive assembly is connected to the vehicle body via an assembly carrier that forms part of the supporting structure, using separate unit carriers for the drive modules to simplify assembly and integrate subframes as stiffening elements, reducing the need for additional reinforcement and allowing for a lightweight construction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional mounting points are used to connect the drive unit to the vehicle body, then the drive unit can be mounted, but the assembly becomes complex and difficult to access, increasing assembly complexity and time
Solution Approach 1:
The vehicle body is divided into modular sections with standardized mounting points that can accommodate different drive unit configurations. The drive unit itself is segmented into separate modules (engine, transmission, differential) that can be assembled independently and mounted as a complete assembly, simplifying the mounting process.
Solution Approach 2:
The mounting points are designed with universal characteristics, allowing the same mounting structure to accommodate different drive unit types and configurations. The standardized mounting interface can be used across different vehicle models and drive unit variants, reducing the need for custom mounting solutions.
2Stability of the object's composition
If additional stiffening elements are added to the vehicle body to increase structural rigidity, then off-road mobility is improved, but the vehicle weight increases
Solution Approach 1:
The mounting structure for the drive unit is merged with the vehicle body's supporting structure. The same structural elements that support the drive unit also serve as stiffening elements for the vehicle body, eliminating the need for separate stiffening components and reducing overall weight.
Solution Approach 2:
The supporting structure performs multiple functions simultaneously: it mounts the drive unit, provides structural support for the vehicle body, and acts as a stiffening element to improve off-road mobility. This multi-functionality reduces the total amount of structural material needed.
3Weight of moving object
If a self-supporting vehicle body is used instead of a classic frame design, then vehicle weight is reduced, but the structural rigidity required for off-road mobility becomes difficult to achieve
Solution Approach 1:
The mounting structure is integrated into the self-supporting body design, combining the functions of structural support and drive unit mounting. This integration allows the self-supporting body to achieve the necessary structural rigidity without adding separate frame elements or excessive stiffening components.
Solution Approach 2:
The supporting structure is designed and positioned in advance during vehicle body construction, ensuring that the structural rigidity is built into the self-supporting body from the beginning. This preliminary integration allows the drive unit to be mounted without compromising the body's structural integrity.
Data Source
AI summary
The invention relates to a vehicle, in particular a military vehicle, comprising a self-supporting vehicle body (2) and a drive assembly (3) for driving the vehicle. The drive assembly (3) is connected to the vehicle body (2) via an assembly support (6, 7), said assembly support (6, 7) forming a part of the support structure of the vehicle body (2). The invention further relates to a method for mounting a drive assembly (3) in a vehicle (1) that has a self-supporting vehicle body (2), wherein the drive assembly (3) is connected to the vehicle body (2) via an assembly support (6, 7) and the assembly support (6, 7) forms a part of the support structure of the vehicle body (2) in the mounted state.