Pole-Mounted Damper Element for Work Tool Vibration Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing work equipment, such as brushcutters and hedge trimmers, are prone to vibrations due to misalignment between the motor and tool shafts, which are transmitted to the support pole and user, causing discomfort.
Innovation Solution
A damper element is interposed between the casing and the pole to absorb vibrations generated by the work apparatus, with the damper element being interposed along the entire circumferential extension of the pole and having an annular body made of a yielding material like NBR (nitrile butadiene rubber) to effectively dampen vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the casing is rigidly fixed to the support pole, then the structural strength and stability are improved, but the vibrations generated by the motor and tool are transmitted to the user through the pole
Solution Approach 1:
A damper element is introduced as an intermediary component between the casing and the support pole. This damper element absorbs and dissipates vibrations generated by the motor and tool, preventing them from being transmitted through the pole to the user, while still maintaining the structural connection between the casing and pole.
Solution Approach 2:
The connection between the casing and support pole is changed from a rigid fixed connection to a connection that includes vibration-damping characteristics. The damper element modifies the mechanical properties of the connection, allowing it to maintain structural strength while reducing vibration transmission through its damping properties.
2Object-affected harmful factors
If a damper element is interposed between the casing and pole, then the vibration damping is improved, but the device complexity increases
Solution Approach 1:
The damper element is designed as a simple, inexpensive component that can be easily manufactured and replaced if needed. This approach allows vibration damping to be achieved without significantly increasing device complexity or cost, as the damper element is a straightforward additive component rather than a complex system.
3Object-affected harmful factors
If the damper element is interposed along the whole circumferential extension of the pole, then the vibration absorption effectiveness is improved, but the manufacturing complexity increases
Solution Approach 1:
The damper element is designed as an annular body that can be fitted onto the pole in a simple manner. This annular structure provides circumferential vibration damping along the entire pole perimeter while maintaining ease of manufacture, as it can be produced as a single continuous component and installed by simple fitting rather than complex assembly 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
The damper element significantly reduces vibrations transmitted to the support pole and user, providing a simple, effective, and affordable solution by enhancing vibration damping and maintaining the damper element's position effectively.
Implementation Method 1
a damper element interposed between the casing and the pole... the vibrations generated by the work apparatus are effectively dampened/absorbed
Implementation Method 2
the damper element may comprise an annular body fitted onto the pole... made of a yielding material like NBR (nitrile butadiene rubber)
Data Source
AI summary
A work equipment (10) is described comprising a pole (20) for supporting a work apparatus (W), wherein the work apparatus (W) comprises: a. a work tool (55), b. a motor (45) adapted to activate the work tool (55), c. a casing (60) rigidly fixed to one end of the pole (20), and adapted to contain the motor (45), characterized in that the work equipment (10) comprises a damper element (85) interposed between the casing (60) and the pole (20).