Integrated Rocker Wheel Carrier for Soil Compaction
Solution Overview
Problem
Existing soil compaction devices with rubber-tyred rollers have high manufacturing costs and complex constructions due to the need for a high load-bearing capacity and compact design, particularly in the wheel suspension system.
Innovation Solution
The wheel carrier is integrated into the rocker, which is cardanically or spherically mounted in the steering arm, reducing the overall height and number of components, allowing better force transmission and limiting oscillating movements with stop surfaces, and a projection is used to transmit steering forces directly to the rocker, enhancing mechanical load-bearing capacity and reducing weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the wheel carrier is mounted separately on the swing arm, then the wheel suspension can support the roller wheels, but the overall height of the wheel suspension becomes relatively high and the structure becomes complex
Solution Approach 1:
The wheel carrier is integrated into the swing arm as a single component, eliminating the need for separate mounting structures. This merging of components reduces the overall height of the wheel suspension while maintaining the load-bearing capacity through the unified structural design.
2Ease of manufacture
If the wheel carrier is mounted on the swing arm with multiple components, then the wheel suspension can be assembled, but the manufacturing costs increase
Solution Approach 1:
By integrating the wheel carrier into the swing arm, the number of separate components is reduced, which simplifies the manufacturing process and reduces assembly steps. The unified structure requires fewer manufacturing operations and reduces overall production costs.
3Strength
If the pivot point of the swing arm on the steering arm is designed for high load-bearing, then the steering movement can be supported, but the design becomes complex and expensive
Solution Approach 1:
The integrated swing arm-wheel carrier structure consolidates the load paths and reduces the number of critical pivot points. The unified design allows for more efficient force distribution, maintaining high load-bearing capacity while simplifying the overall design and reducing manufacturing costs.
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
This design reduces manufacturing costs, enhances mechanical load-bearing capacity, and maintains a horizontal machine frame on uneven ground by improving force transmission and stability, while also reducing the overall height and weight of the wheel suspension.
Implementation Method 1
the swing arm is mounted cardanically or spherically in the steering arm of the wheel suspension
Implementation Method 2
the swing arm is mounted cardanically or spherically in the steering arm of the wheel suspension
Implementation Method 3
the steering arm is frictionally coupled to the swing arm at a distance from the spherical or cardan joint
Implementation Method 4
the swing arm has at least two stop surfaces that abut against the steering arm of the wheel suspension to limit any pendulum movement acting on the wheel carrier
Implementation Method 5
the swing arm is mounted cardanically or spherically in the steering arm of the wheel suspension
Data Source
Figure 1
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AI summary
In a soil compaction device, in particular a rubber-tired roller, with several pairs of roller wheels, with a machine frame in which a wheel suspension (8) with a steering arm (6) pivotable about a steering axis (9), with a wheel carrier (10) and a lifting device (28) for the wheel carrier (10) is mounted for each pair of roller wheels, wherein the wheel carrier (10) is movable up and down with a rocker arm (14) which is pivotally mounted at one end to the steering arm (6) and is connected at the free end to the steering arm (6) via a piston-cylinder unit (28) for adjusting the height of the wheel carrier (10), wherein the wheel carrier (10) can perform a pendulum movement about a pendulum axis (30) running parallel to the rocker arm (14), it is provided that the wheel carrier (10) is integrated into the rocker arm (14) and the pair of roller wheels (2) is mounted in the rocker arm (14), wherein the rocker arm (14) is mounted cardanically or spherically in the steering arm (6) of the wheel suspension (8).