Helical Spring Suspension for Soil Compactor Roller Vibration Isolation
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Solution Overview
Problem
Existing soil compactors face inefficiencies in compaction due to the transmission of periodic forces from the compactor roller to the machine frame, which reduces compaction efficiency and energy utilization.
Innovation Solution
The use of helical springs as suspension elements between the compactor roller and the machine frame allows for relative movement, preventing force transmission and enabling efficient compaction by absorbing no energy, thus maintaining energy availability for compaction movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If elastomeric suspension elements are used to support the compactor roller, then the roller is cushioned and supported, but damping forces are transferred to the machine frame that reduce compaction efficiency
Solution Approach 1:
The patent changes the physical parameter of the suspension element from elastomeric material (which has inherent damping properties) to a coil spring mechanism (which has minimal damping). This parameter change allows the suspension to support the roller while transferring negligible damping forces to the machine frame, thereby resolving the contradiction between support capability and energy loss.
2Stability of the object's composition
If rigid support is used for the compactor roller, then structural stability is maintained, but periodic forces from compaction are transmitted to the machine frame
Solution Approach 1:
The coil spring acts as an intermediary element between the compactor roller and the machine frame. It provides the necessary mechanical support while isolating the machine frame from the periodic compaction forces. The spring's elastic properties allow it to absorb and release energy without transmitting harmful vibrational forces, thus resolving the contradiction between structural stability and force transmission.
3Object-affected harmful factors
If suspension elements with high damping are used, then vibration is reduced, but compaction efficiency decreases due to energy absorption
Solution Approach 1:
The patent changes the damping parameter of the suspension system by selecting coil springs with minimal inherent damping compared to elastomeric materials. This parameter adjustment allows the system to maintain necessary vibration isolation while preserving compaction energy, thereby resolving the contradiction between vibration reduction and compaction efficiency.
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 configuration enhances compaction efficiency by ensuring that energy is fully utilized for compactor roller acceleration and movement, while providing stable support and vibration decoupling, thereby improving compaction performance.
Implementation Method 1
at least one, preferably each suspension arrangement comprises at least one coil spring movably coupling the compactor drum to the machine frame
Implementation Method 2
helical springs or at least one helical spring are used to enable a relative movement between the compactor roller and the machine frame
Data Source
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AI summary
Soil compactor comprising at least one compaction roller (20a) rotatably mounted on a machine frame about a roller rotation axis (A), wherein at least one compaction roller (20a) is movably mounted on the machine frame (22a) in its two axial end regions (30a) via a suspension arrangement (28a), wherein at least one suspension arrangement (28a) comprises at least one helical spring (84a, 86a, 92a) movably coupling the compaction roller (20a) to the machine frame, wherein the at least one suspension arrangement (28a) comprises a roller support unit (38a), wherein the compaction roller (20a) is rotatably mounted on the roller support unit (38a) about the roller rotation axis (A), the roller support unit (38a) is coupled to the machine frame (22a) via at least one helical spring (84a, 86a, 92a), which The roller support unit (38a) comprises a support element (64a) that rotatably supports the compressor roller (20a) about the roller rotation axis (A),and the support element (64a) is coupled to the machine frame (22a) in a plurality of first coupling areas (76a, 78a, 80a, 82a) arranged circumferentially apart from each other around the roller rotation axis (A) via at least one helical spring (84a, 86a), at least one pair of first coupling areas (76a, 78a, 80a, 82a) diametrically opposed to each other with respect to the roller rotation axis (A) is provided on the support element (64a), and in at least one first coupling area (76a, 78a, 80a, 82a) the support element (64a) is coupled to the machine frame (22a) via at least two first helical springs (84a, 86a), in at least one pair of first coupling areas (78a, 82a) at each of the two first coupling areas (78a, 80a) two first coil springs (84a, 86a) extend from a respective first coupling area (78a, 82a) approximately parallel to each other and in opposite directions,or/and in at least one pair of first coupling regions (76a, 80a) at each of the two first coupling regions (76a, 80a) two first helical springs (84a, 86a) extend from a respective first coupling region (76a, 80a) at an angle to each other and in opposite directions.