Vehicle Lift Platform With Ground Support to Prevent Axle Overload
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Solution Overview
Problem
Current load-lifting devices for vehicles do not effectively distribute the weight of lifted loads, particularly on vehicles with a single rear axle, leading to potential overloading and strain on the suspension or connection between the device and the vehicle.
Innovation Solution
A load-lifting device with a platform, linking lever, support element, and connection element that allows the platform to pivot and lift loads while transferring some of the weight to the substrate via a support element, reducing the load on the vehicle and enabling easy assembly on various vehicle types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the load-lifting device is constructed to lift loads without substrate contact, then the lifting function is achieved, but the vehicle and suspension bear the complete load weight causing potential overloading
Solution Approach 1:
The support element acts as an intermediary between the load-lifting device and the substrate. It transfers part of the load weight directly to the substrate through ground contact, reducing the force burden on the vehicle suspension and connection points while maintaining the lifting function.
Solution Approach 2:
The support element provides a counterbalancing effect by bearing portion of the load weight through direct substrate contact. This counteracts the gravitational force on the vehicle suspension, effectively reducing the net force that the vehicle must support.
2Force
If the load-lifting device is designed for high load-bearing capacity, then it can lift heavier loads, but the device becomes larger and heavier
Solution Approach 1:
The load-bearing function is segmented between the vehicle-mounted load-lifting device and the ground-based support element. This division allows the device to be lighter while the support element handles the excess weight burden, achieving high load-bearing capacity without proportionally increasing device weight.
3Force
If the load-lifting device is designed for trucks with high load-bearing capacity, then it can handle heavy loads, but it requires larger dimensions and more space
Solution Approach 1:
The support element serves as a mediator that extends the load-bearing capacity beyond the physical dimensions of the device itself. By transferring load to the ground, the system achieves high force capacity without requiring the device structure to be proportionally larger.
4Device complexity
If the load-lifting device uses a single support element, then the structure is simpler and lighter, but the stability and load distribution may be insufficient
Solution Approach 1:
The support element is designed with dynamic adjustment capabilities, allowing it to adapt its position and load-bearing characteristics based on the actual loading conditions. This dynamic behavior maintains stability and proper load distribution even with a single support element, eliminating the need for complex multi-element structures.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device minimizes the risk of vehicle overloading by distributing the load's weight to the substrate, allowing for seamless loading and unloading while maintaining stability and adaptability across different vehicle geometries.
Implementation Method 1
the linking lever (5) is pivotably supported on the platform (3) and articulated to the linking end region (19) of the vehicle
Implementation Method 2
at least a portion of the weight acting on the vehicle and/or the suspension can be transmitted via the support element (7) to the substrate or supported thereon
Data Source
AI summary
A load-lifting device for mounting on a vehicle, including a platform for receiving a load which can be brought from a lowered into a raised working position, and back again, as well as a linking lever, a support element, a drive element and a connection element. The linking lever that is pivotally mounted on the platform is linked to the vehicle at a linking end region. The support element attached to the platform includes a foot end which braces the ground. The drive element brings the support element from a resting state associated with the resting position of the platform, into a working state in which the foot end is braced on the ground and the platform is raised into the working position. The connection element functions to control the rotational position of the linking lever and the pivot position of the platform according to the support element.