Plate Compactor Adjustable Suspension Kinematics
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Solution Overview
Problem
Existing plate compactors have limited compaction performance due to weight constraints and inefficient force transmission, leading to suboptimal compaction results and loss of energy, as they are not universally adaptable to different substrates and require heavier equipment for better compaction.
Innovation Solution
A plate compactor with freely oscillating suspension kinematics, featuring an auxiliary frame with adjustable connections and elastically flexible force-transmitting contacts, allowing for variable ground pressure adjustment without increasing the dead weight, enabling effective and controllable force transmission for improved compaction performance across various soils.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If the dead weight of the plate compactor is increased to improve compaction performance, then compaction effectiveness is improved, but the payload limit of the carrier device is exceeded
Solution Approach 1:
The invention uses the carrier device's own weight and hydraulic lifting force as counterbalancing elements. The hydraulic cylinder lifts the plate compactor against gravity, and the carrier device's weight provides the reaction force. This allows the system to generate high compaction forces without increasing the plate compactor's dead weight, as the carrier device itself becomes part of the force-generating system.
Solution Approach 2:
The invention employs a hydraulic lifting device (hydraulic cylinder) to replace mechanical dead weight with hydraulic force. The hydraulic system can generate large forces in a compact package, allowing the plate compactor to achieve high compaction performance without proportionally increasing its weight. The hydraulic force is transmitted through the lifting device to the plate compactor, enabling forceful compaction within payload limits.
2Loss of energy
If the plate compactor is rigidly connected to the carrier device to improve force transmission, then force transmission efficiency is improved, but the wobbling effect and energy loss increase
Solution Approach 1:
The invention changes the parameter of connection rigidity from rigid (fixed) to flexible (articulated). The articulated connection allows relative movement between the plate compactor and carrier device, eliminating the wobbling effect that occurs with rigid connections. This flexible connection maintains effective force transmission while reducing energy loss through unwanted movements and vibrations.
3Weight of moving object
If the plate compactor is articulated to the carrier device to reduce weight impact, then payload utilization is improved, but compaction performance is limited
Solution Approach 1:
The invention uses a hydraulic lifting device to generate compaction force, replacing the need for heavy mechanical mass. The hydraulic cylinder can generate large forces in a compact, lightweight package, allowing the articulated plate compactor to achieve high compaction performance without exceeding payload limits. The hydraulic force is transmitted through the lifting device to the plate compactor, enabling powerful compaction with minimal weight.
Solution Approach 2:
The system uses the carrier device's weight and hydraulic lifting force as counterbalancing elements. The hydraulic cylinder lifts the plate compactor against gravity, and the carrier device's weight provides the reaction force during compaction. This allows the system to generate high compaction forces without increasing the plate compactor's dead weight, as the carrier device itself becomes part of the force-generating system.
4Adaptability or versatility
If the plate compactor is designed with fixed weight to simplify structure, then device complexity is reduced, but adaptability to different substrates is limited
Solution Approach 1:
The invention uses a dynamically adjustable suspension system with articulated connections and hydraulic lifting. The system can adapt its configuration and force output based on the substrate requirements. The articulated connections allow the plate compactor to adjust its position and angle, while the hydraulic lifting device can vary the applied force, providing adaptability to different substrates without requiring multiple fixed-weight devices.
Solution Approach 2:
The articulated suspension system with hydraulic lifting serves multiple functions: it supports the plate compactor, allows positional adjustment, provides force transmission, and enables adaptability to different substrates. This multi-functional design replaces what would otherwise require separate systems, achieving versatility without proportionally increasing complexity.
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 solution enables better compaction performance with a lighter device by allowing adjustable ground pressure, reducing energy loss, and accommodating different soil types without exceeding payload limits, thus providing a universally applicable and economically advantageous compaction solution.
Implementation Method 1
between the auxiliary frame (18) and the plate compactor (10) or its upper part (24), in particular by means of at least one elastically flexible contact element (50)
Implementation Method 2
an unbalance gear which is coupled to a drive motor... The vibration frequencies, which are predetermined by the speed of the unbalanced shafts, result in the deflections of the base plate
Data Source
AI summary
A plate compactor (10) and a mounting device for at least one such plate compactor (10) are disclosed. The plate compactor (10) is adjustably arranged or mounted on a carrier device (14) via a freely oscillating suspension kinematic (12). The plate compactor (10) is pivotally mounted to an auxiliary frame (18) by means of at least one articulated connection (16, 22), the auxiliary frame (18) being pivotally and adjustably connected to the carrier device (14). The auxiliary frame (18) supports the plate compactor (10) via the articulated connection (16, 22) in a first adjustment range. In a second adjustment range, the auxiliary frame (18) provides, in addition to the joint connection (16, 22) and spaced apart from it, at least one force-transmitting contact (46) for exerting and/or increasing a pressure force (34) acting on the plate compactor (10) and/or exerted by it on a substrate (32).