Vibration Exciter Segmented Dynamic Part for Damage Resistance
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Solution Overview
Problem
Current vibration exciters are susceptible to damage and failure, particularly due to the lightweight design of their dynamic parts, which can be easily deformed or fail during installation, operation, or accidental movements, and the force-interacting elements like field coils are prone to overheating.
Innovation Solution
A vibration exciter with a releasable coupling mechanism using flexible coupling elements that allow easy replacement of the dynamic part, enabling a lighter and more fragile design without protective elements, and facilitating the use of a permanent magnet on the main body with a field coil on the dynamic part, which can be easily discarded if damaged.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If the dynamic part is designed to be lightweight, then the vibration exciter can operate in confined spaces and be more versatile, but the dynamic part becomes susceptible to damage from dents, cracks, or deformation
Solution Approach 1:
The vibration exciter is divided into separable components: a main body and a dynamic part that can be independently replaced. The dynamic part is designed as a separate, replaceable module that can be detached from the main body, allowing the lightweight dynamic part to be protected by having a separate, more robust main body structure.
Solution Approach 2:
The dynamic part is designed to be replaceable and can be discarded if damaged, while the main body is retained and reused. This allows the lightweight dynamic part to be optimized for performance without needing excessive protective structures, as damaged dynamic parts can be simply replaced rather than repaired.
2Adaptability or versatility
If the flexible support means are designed to be lean, then the device meets flexibility requirements during operation, but the means are susceptible to rupture and connection failure
Solution Approach 1:
The coupling means are designed as separate, replaceable components that connect the main body and dynamic part. This segmentation allows the flexible support means to be optimized for operational flexibility while the coupling mechanism provides a robust connection that can be replaced if damaged.
Solution Approach 2:
The coupling means incorporate elements designed to absorb or mitigate accidental forces before they can cause damage to the flexible support means. The coupling mechanism acts as a protective interface that can withstand unexpected loads during installation, removal, or accidental pushes.
3Weight of moving object
If the field coil is made from thin wire to reduce weight, then the dynamic part meets weight requirements, but the field coil is prone to overheating
Solution Approach 1:
The field coil is separated into the dynamic part and can be independently replaced. This allows the field coil to be designed with thin wire for weight reduction in the dynamic part, while overheating issues can be addressed by replacing the field coil rather than redesigning the entire system with heavier wiring.
Solution Approach 2:
The field coil is designed as a replaceable component that can be quickly swapped if overheating or damage occurs. This allows the use of lighter, thinner wire in the field coil since the coil can be replaced rather than requiring excessive over-engineering for thermal protection.
4Reliability
If protective elements are added to the dynamic part, then damage resistance is improved, but the device complexity and size increase
Solution Approach 1:
Instead of adding protective elements to the dynamic part, the system segments the dynamic part from the main body. The dynamic part can be designed simple and lightweight for ease of replacement, while the main body provides the robust structure and protective elements needed for overall system reliability.
5Reliability
If repair or replacement of damaged parts is required, then damaged components can be restored, but the process is cumbersome and time-consuming
Solution Approach 1:
The dynamic part and coupling means are designed as separable, modular components that can be quickly detached from the main body. This segmentation enables rapid replacement of damaged dynamic parts without requiring complex disassembly or repair procedures, significantly reducing downtime.
Solution Approach 2:
The coupling means are designed to facilitate easy and quick connection and disconnection of the dynamic part. This preliminary design of the coupling mechanism ensures that replacement operations can be performed rapidly without requiring specialized tools or procedures.
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 reduces the risk of damage, allows for more accurate measurements, and makes the vibration exciter more versatile and cost-efficient by enabling quick replacement and use in confined spaces with reduced complexity.
Implementation Method 1
a coupling element (50) configured to provide a flexible support of the dynamic part (10) on the main body (20)
Implementation Method 2
a field coil (30) on the dynamic part (10), which can be easily discarded if damaged
Data Source
Figure 1a~1b
Figure 2a~2c
Figure 3
AI summary
A vibration exciter comprises a main body having a relatively large mass; a relatively light-weight dynamic part, to be flexibly supported so as to be movable relative the main body, and driving means for driving the main body and the dynamic part to move relative to each other, or at least generate a force acting between the main body and the dynamic part, under the influence of a control signal. It comprises coupling means for providing a releasable coupling between the main body and the dynamic part, the coupling means comprising at least one coupling element releasably engaging one of the main body and the dynamic part in a coupled condition, the coupling element being arranged on the other one of the main body and the dynamic part so as for the dynamic part to be flexibly supported on the main body in the coupled condition via the coupling element.