Open Profile Support Device for Vehicle Crane Stability
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Solution Overview
Problem
Existing support devices for vehicle cranes have reduced stability due to restricted installation space and unfavorable torsional loads when vehicle wheels are attached, limiting their effectiveness and safety.
Innovation Solution
The design of an open-profile support device with integrated vehicle wheels, featuring tension belts and side walls, along with a support cylinder and variable sheet metal thicknesses, allows for enhanced stability and load distribution, reducing torsional loads and enabling independent wheel drives and steering systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If vehicle wheels are laterally mounted to the support structure, then the support device can support the vehicle superstructure, but unfavorable torsional load is applied to the support structure
Solution Approach 1:
Instead of laterally mounting wheels to the support structure (conventional approach), the patent inverts the mounting orientation by positioning wheels at the ends of the support structure along its longitudinal axis. This inversion changes the load distribution from torsional to primarily vertical and longitudinal forces, eliminating the unfavorable torsional loading while maintaining support capability.
2Reliability
If additional vehicle wheels are added to the support device, then vehicle wheels can be attached for support, but the available installation space for the undercarriage and superstructure is restricted
Solution Approach 1:
The patent repositions the vehicle wheels from lateral attachment (width dimension) to longitudinal placement at the ends of the support structure. This dimensional change allows the wheels to be positioned at the extremities of the support device along its length, maximizing the central installation space for the undercarriage and superstructure while maintaining support stability through proper load distribution.
3Ease of manufacture
If the support structure is made smaller to accommodate wheel mounting, then wheel attachment is possible, but the support structure has reduced stability
Solution Approach 1:
The patent employs an asymmetric support structure design where the longitudinal I-shaped beams provide enhanced moment of inertia and structural stiffness. The asymmetric placement of wheels at the extreme ends of the support structure, combined with the I-beam geometry, creates optimal leverage and stability without requiring a larger overall structure, thus maintaining both manufacturability and stability.
Data Source
AI summary
The invention relates to a support device (1) for supporting a vehicle body, wherein the support device (1) extends horizontally and comprises at least one tension boom (2), a compression chord (3), and two side walls (4) connecting the at least one tension boom (2) and the compression chord (3), wherein two tension booms (2) are present and a profile formed by the two tension booms (2), the compression chord (3), and the two side walls (4) is open downward in the direction of a floor surface (5) for receiving, at least in segments, vehicle wheels (6).