Vibration Generator With Adjustable Static Moment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current vibration generators for construction, which use sinusoidal force profiles to drive piling into the ground, suffer from high energy consumption and inefficiency due to friction, and lack the ability to adjust the static moment of wave groups during operation, limiting their propulsion efficiency.
Innovation Solution
A vibration generator design that allows independent adjustment of the static moment of wave groups using a phase shifter, such as an oscillating motor, enabling adaptation of the vibration frequency and direction to optimize energy use and reduce vibration load on the ground.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sinusoidal force profile is used to drive piling, then vibration is generated to achieve pseudo-liquid state of soil, but energy consumption is high and propulsion efficiency is low due to friction
Solution Approach 1:
The patent applies dynamics by making the vibration generator capable of changing its operating characteristics during operation. Specifically, the static moment of wave groups can be adjusted dynamically to adapt to different ground conditions and piling requirements, optimizing the force profile from simple sinusoidal to asymmetric patterns that generate pronounced force peaks in the propulsion direction, thereby improving propulsion efficiency while reducing energy consumption.
Solution Approach 2:
The patent implements parameter changes by allowing modification of the static moment of individual wave groups during operation. This enables transformation of the force curve from a symmetric sinusoidal pattern to an asymmetric pattern with enhanced amplitude in the propulsion direction. By changing parameters such as the static moment distribution among wave groups, the system optimizes energy utilization and reduces frictional losses.
2Productivity
If multiple unbalance groups rotating at different speeds are coupled, then propulsion efficiency increases, but the ability to adjust static moment during operation is limited
Solution Approach 1:
The patent resolves this contradiction by introducing dynamic adjustability to the static moment of wave groups. The vibration generator is equipped with mechanisms that allow the static moment of individual wave groups to be modified during operation, enabling adaptation to varying ground conditions and piling requirements while maintaining the benefits of multiple unbalance groups rotating at different speeds.
Solution Approach 2:
The patent applies universality by designing a vibration generator that can perform multiple functions through adjustable static moments. The same device can generate different force profiles and frequency characteristics by zeroing the static moment on different shaft groups, making it adaptable to various construction scenarios including different ground conditions, piling types, and depth requirements.
3Speed
If vibration generator operates at high speed, then piling process is accelerated, but vibrations generated in the ground increase
Solution Approach 1:
The patent applies local quality by enabling selective adjustment of the static moment for individual wave groups rather than uniformly adjusting all groups. This allows the system to optimize the force distribution locally, creating pronounced force peaks in the propulsion direction while minimizing vibrations transmitted to the surrounding ground, thus reducing harmful ground vibrations even at high operating speeds.
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 energy efficiency by creating a pronounced force peak in the propulsion direction, reducing energy supplied to the subsoil, and minimizing vibration load on the environment, while allowing for flexible operation in different construction scenarios.
Implementation Method 1
Vibration generators are linear vibration generators whose centrifugal force is generated by rotating imbalances
Implementation Method 2
The vibration is characterized by a linear movement and is generated by pairs of counter-rotating imbalances within a vibrator gear
Data Source
Figure 1
Figure 2a
Figure 2b
AI summary
The invention relates to a vibration generator comprising at least two shaft groups on which at least two unbalance groups are arranged and which are connected to at least one drive by which they are set into rotation, wherein the at least two shaft groups (1, 2) are connected to the at least one drive such that the rotational speed of at least one shaft group (2) is a multiple of the rotational speed of at least one further shaft group (1) and that at least two of the shaft groups (1, 2) provided with the unbalance groups (101, 201) have a different static moment relative to each other. At least one shaft group (1, 2) is connected to a phase shifter by which the static moment of the shaft group can be adjusted.