Belt-Driven Dust Removal for Engine Cutting Tools
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Solution Overview
Problem
Existing engine-driven tools face challenges in effectively and efficiently removing dust generated during cutting operations, which can harm health and pollute the environment, and current dust removal systems are often complex and less versatile.
Innovation Solution
The engine-driven tool incorporates a dust channel between the shielding cover and the rotatable work tool, connected to a dust hose that leads to a dust container, with a fan arrangement to convey air and collect dust, and features self-adjusting swiveling parts with spring-loaded mechanisms to maximize dust collection and minimize air-borne dust release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a water supply system is used to suppress dust, then dust release into air is minimized, but water consumption increases and requires additional handling at the working site
Solution Approach 1:
The patent employs a vacuum-based pneumatic system instead of water suppression. A vacuum cleaner with a suction nozzle creates negative pressure to extract dust particles from the cutting zone through a hose connection, eliminating the need for water while effectively capturing dust at its source
2Object-affected harmful factors
If an integrated fan with transmission arrangement is used for dust removal, then dust collection capability is improved, but device complexity increases due to drive belts or geared transmissions
Solution Approach 1:
The patent extracts the fan from the engine-driven tool itself, using a separate vacuum cleaner unit with its own independent motor and fan system. This separation eliminates the need for complex transmission arrangements between the tool's engine and the dust removal fan, while maintaining effective dust collection capability through the vacuum system
3Object-affected harmful factors
If shielding cover with fixed structure is used, then dust containment is improved, but adaptability to different working surfaces and angles is reduced
Solution Approach 1:
The patent implements a telescopic shielding cover with adjustable length that can be extended or retracted along the hose axis. This dynamic structure allows the shielding cover to adapt to different working surfaces and cutting angles while maintaining effective dust containment, providing versatility for various operational conditions
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 provides a reliable and versatile dust removal system that minimizes dust release into the surrounding air, ensuring effective collection and reducing the complexity of the dust removal arrangement.
Implementation Method 1
a fan arrangement (13) that is arranged to convey air from the dust channel (11) into the dust container (15) via the dust hose (14)
Data Source
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AI summary
The present disclosure relates to engine-driven tool(1) comprising a rotatable work tool (2) and an engine (4) for propelling a first driving pulley (28) via a clutch wheel (30) comprised in a power transferring unit (27) and having an outer edge. The first driving pulley (28) and the clutch wheel (30) are arranged to rotate around a common driving axis (38). The power transferring unit (27) comprises an endless drive belt (9) that is arranged propel the rotatable work tool(2) when the first driving pulley (28) is propelled. A fan arrangement (13) is arranged to convey air from a dust channel (11) formed between a shielding cover (8) and the rotatable work tool (2), and comprises a fan turbine (26) that is connected to a fan pulley (29)connected to the drive belt (9) is arranged to propel the fan pulley (29). A first overlap line (50) extends along the outer edge (52) of the clutch wheel (30), perpendicular to the extension of the common driving axis (38), the first overlap line (50) further extending via the fan turbine (26).