Vibration Exciter Central Adjusting Element Amplitude Vector Control
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Solution Overview
Problem
Existing vibration exciters for construction machines, such as vibration tampers, face complexities in amplitude and vector adjustments, leading to inefficient load distribution and directional changes.
Innovation Solution
A vibration exciter design featuring two rotatable unbalance shafts with adjustable movable unbalance masses, utilizing a central adjusting element for amplitude and vector adjustments, where the central element acts as both an amplitude adjuster and a rotational axis for vector adjustments, enabling compact and load-optimized configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate adjusting devices are used for amplitude and vector adjustment on two unbalance shafts, then adjustment functionality is complete, but device complexity increases
Solution Approach 1:
The patent combines the amplitude adjustment function and vector adjustment function into a single central adjusting element. This element simultaneously performs both adjustment tasks that were previously handled by separate devices, thereby reducing overall device complexity while maintaining complete adjustment functionality.
Solution Approach 2:
The central adjusting element is designed with multi-functionality, serving both as an amplitude adjuster and as a rotational axis for vector adjustment. This universal component replaces multiple specialized components, simplifying the overall adjusting device structure.
2Measurement precision
If multiple adjusting elements are distributed on two unbalance shafts, then adjustment precision is maintained, but structural compactness deteriorates
Solution Approach 1:
The patent merges multiple distributed adjusting elements into a single centralized adjusting element. This central element maintains the necessary adjustment precision through its design while achieving a more compact and simplified structural configuration by eliminating the need for multiple distributed components.
3Reliability
If complex adjusting devices are used for both amplitude and vector adjustment, then adjustment reliability improves, but manufacturing cost increases
Solution Approach 1:
The patent merges multiple adjusting devices into a single central adjusting element, reducing the total number of components that need to be manufactured and assembled. This simplification lowers manufacturing costs while the integrated design maintains adjustment reliability through coordinated amplitude and vector control.
Solution Approach 2:
The universal central adjusting element performs multiple functions (amplitude adjustment and vector adjustment) that would otherwise require separate specialized components. This multi-functionality reduces the bill of materials and assembly complexity, thereby reducing manufacturing cost while maintaining reliable adjustment capabilities.
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
Ensures reliable amplitude and vector adjustments, optimizing load distribution and reducing operational loads by allowing directional changes in vibration amplitude, enhancing compaction efficiency without excessive machine stress.
Implementation Method 1
two unbalance shafts which extend in parallel with respect to each other, which are rotatable in opposite directions and on which at least one movable unbalance weight is arranged. The unbalance mass causes an excitation impulse in an excitation direction
Data Source
AI summary
The present invention relates to a vibration exciter for generating a directed excitation vibration, especially for installation in a vibration tamper, and a machine with such a vibration exciter, comprising at least two parallel extending unbalance shafts which are rotatable against one another, on which at least one respective fixed unbalance mass and at least one respective movable unbalance mass are arranged, with the positions of the movable unbalance masses on the unbalance shafts being variable by way of an adjusting device for adjusting the amplitude of the exciter vibration, and with the adjusting device comprising a central adjusting element for amplitude adjustment which acts on the movable unbalance masses of the two unbalance shafts, which central adjusting element is arranged coaxially to a rotational axis (AS) about which the vibration exciter is rotatable for the purpose of vector adjustment of the excitation vibration.