Vibration Isolation for Movable Concrete Saws
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Solution Overview
Problem
Movable saws, such as concrete saws, experience operator fatigue and component wear due to vibrations transmitted through handles, which can lead to reduced machine lifetime and increased costs, and existing remote control solutions are often complex and undesirable.
Innovation Solution
The implementation of an isolation system that dampens vibrations between the motor and the frame, including the use of rubber or thermoplastic damping elements between the blade drive shaft and the frame, and between the motor and the second frame, to reduce the transmission of cyclical forces to the operator and components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the motor and blade assembly are rigidly mounted to the frame, then structural strength and stability are improved, but vibration transmission to the operator increases causing fatigue and health issues
Solution Approach 1:
The patent introduces an isolator as an intermediary element between the motor/blade assembly and the frame. This isolator absorbs and dampens vibrations generated by the motor and blade, preventing their transmission to the frame and operator, while still maintaining secure mounting and structural integrity.
Solution Approach 2:
The patent changes the mounting parameters by using vibration isolators instead of rigid mounts. This alters the mechanical coupling characteristics between components, reducing vibration transmission while maintaining the necessary structural connection for strength and stability.
2Reliability
If vibration isolation components are added between the motor and frame, then operator comfort and component lifetime are improved, but device complexity increases
Solution Approach 1:
The patent combines the isolation function with the existing mounting structure by integrating isolators into the motor mounting arrangement. This merges the vibration isolation requirement with the structural support function, avoiding the need for separate complex isolation systems.
3Object-affected harmful factors
If remote control is used to isolate the operator from vibration, then operator fatigue is reduced, but equipment complexity and cost increase
Solution Approach 1:
The patent uses physical vibration isolators as intermediaries to block vibration transmission paths, providing passive isolation that protects the operator without requiring complex remote control systems or additional active 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 solution effectively reduces operator fatigue and extends the machine's operational time while minimizing wear on components, thereby increasing the saw's lifespan and reducing operating costs.
Implementation Method 1
rubber or thermoplastic damping elements between the blade drive shaft and the frame
Implementation Method 2
rubber or thermoplastic damping elements
Implementation Method 3
an isolator for isolating a frame portion of the movable machining device from vibrations produced through operation of the machine tool
Data Source
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AI summary
A movable machine such as a concrete saw has an isolator or other damping element between the working tool portion of the machine and the supporting structure, such as a frame, chassis or other structure. The working tool portion of the machine may include a tool and a motor and the tool may include a support mounted or otherwise fixed to the motor.