Buffer Unit Recesses for Vibration Control in Compacting Devices
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Solution Overview
Problem
Existing devices for compacting subsoil face challenges in efficiently transmitting forces between the guide device and the superstructure due to indirect and spongy vibration transmission, leading to stress peaks and reduced durability, especially when using elastic buffer units that are vulcanized onto rigid connecting plates.
Innovation Solution
A device design where the connecting means extends along the longitudinal axis of the buffer unit, allowing for eccentric loading reduction, and featuring a ring cross-section with recesses to increase elasticity, enabling continuous power transmission and minimizing vibration amplification, with a buffer unit that stiffens only under significant force, optimizing force distribution and reducing surface pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If an elastic buffer unit is vulcanized onto a rigid connecting plate, then vibration transmission from the superstructure to the guide device is reduced, but stress peaks occur and durability is reduced
Solution Approach 1:
The patent introduces a connecting means (such as a bolt or pin) as an intermediary element between the buffer unit and the superstructure. This connecting means extends along the longitudinal axis of the buffer unit and enables direct force transmission without vulcanizing the buffer unit to a rigid connecting plate, thereby eliminating stress peaks while maintaining vibration reduction
Solution Approach 2:
The patent changes the structural parameters of the buffer unit by providing recesses in its ring cross-section. This modification increases the elasticity and deformability of the buffer unit, allowing it to better absorb vibrations and distribute forces evenly, thus preventing stress peaks while maintaining vibration isolation
2Object-affected harmful factors
If the buffer unit is made elastic to buffer vibrations, then vibration transmission is reduced, but force transmission becomes indirect and spongy
Solution Approach 1:
The connecting means serves as a mediator that bridges the elastic buffer unit and the rigid superstructure. It transmits forces directly along the longitudinal axis of the buffer unit while the buffer unit itself handles vibration absorption, achieving both efficient force transmission and vibration buffering simultaneously
3Power
If the connecting means extends along the longitudinal axis of the buffer unit, then eccentric loading is reduced and power flow is enhanced, but the structure becomes more complex
Solution Approach 1:
The patent segments the connection system into distinct functional elements: the buffer unit for vibration absorption, the connecting means for direct force transmission, and the superstructure. This segmentation allows each component to perform its specific function optimally while maintaining overall simplicity
Solution Approach 2:
The connecting means serves multiple functions simultaneously: it transmits forces along the longitudinal axis, reduces eccentric loading, and provides structural support. This multi-functionality enhances power flow without requiring additional complex components
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 enhances power flow and durability by reducing stress peaks, allowing for efficient force transmission while minimizing vibration transmission to the guide device, thus improving user safety and operational ease.
Implementation Method 1
the buffer unit is formed from an elastic material, so that it can deform particularly easily
Implementation Method 2
The vibration exciter mentioned is generally an eccentric, which is typically driven by an internal combustion engine. By means of a movement of a mass about an eccentrically arranged axis, the eccentric generates an oscillation
Implementation Method 3
the buffer unit is designed in such a way that it stiffens when a certain deformation is reached, so that a more direct or 'unfiltered' power transmission between the guide device and the superstructure is possible
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Device (1) for compacting a subsoil, in particular a vibratory plate, comprising undercarriage (2), superstructure (4), vibration exciter (8), and guide device (5), wherein the guide device (5) is connected to the superstructure (4) in a force-transmitting manner via at least one buffer unit (9, 9') and is rotatable about a pivot axis (7) relative to the superstructure (4), wherein the buffer unit (9, 9') has a central recess (12) which extends at least over a substantial part of the length of the buffer unit (9, 9') and parallel to the pivot axis (7), wherein the buffer unit (9, 9') has an annular cross-section (13, 13') which circumferentially encloses the recess (12).In order to provide a device whose connection of the guide device (5) and the upper carriage (4) is improved compared to the prior art, it is proposed according to the invention that the ring cross-section (13, 13') has at least one recess (17) so that the ring cross-section (13, 13') is reduced compared to a solid cross-section.