Reciprocating Cutting Blade Layout for Easy Grass Stack Removal
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Solution Overview
Problem
Handheld working machines with reciprocating cutting blades face issues with grass accumulation on the cutting blade apparatus, leading to increased weight and reduced work accuracy and comfort due to the stack of mown grass hindering the mowing process.
Innovation Solution
The machine is designed with a T-shaped configuration, allowing the cutting blade apparatus to be raised by turning around one of its ends, with the battery positioned to balance the center of gravity near the pivot axes, reducing the load during turning and facilitating easy removal of grass stacks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the reciprocating cutting blade apparatus is mounted to the top end of the operating rod to form a T-shape, then the effective cutting width is increased and workability is improved, but mown grass accumulates on the cutting blade apparatus forming stacks that increase weight and reduce work comfort
Solution Approach 1:
The cutting blade apparatus is designed to be movable relative to the operating rod through a hinge connection, allowing it to be raised and lowered dynamically during operation. This enables the operator to adjust the position of the cutting blades to dislodge and remove accumulated grass stacks, maintaining work comfort while preserving the wide cutting capability
Solution Approach 2:
The angle and position of the cutting blade apparatus relative to the operating rod can be changed during operation. By raising the cutting blades away from the horizontal cutting position, grass accumulation is prevented and removed, thereby maintaining ease of operation despite the T-shaped configuration
2Productivity
If the reciprocating cutting blade apparatus operates continuously, then productivity is maintained, but grass stacks accumulate on the cutting blade apparatus increasing weight and imposing burden on the worker
Solution Approach 1:
The cutting blade apparatus is designed with movable hinges allowing dynamic adjustment during operation. When grass stacks accumulate, the operator can raise the cutting blades to dislodge and remove the accumulated grass, preventing continuous weight increase and maintaining continuous work capability
Solution Approach 2:
The design allows the operator to easily remove grass stacks by simply raising the cutting blades, enabling self-maintenance during operation without requiring stopping the work process or complex removal mechanisms
3Productivity
If the reciprocating cutting blade apparatus is positioned to maximize cutting width, then work efficiency is improved, but grass stacks protrude in front of the cutting blades hindering mowing and reducing work accuracy
Solution Approach 1:
The cutting blade apparatus is hinged to allow dynamic positioning. When grass stacks protrude and hinder mowing, the operator can raise the cutting blades to remove the obstruction, then lower them back to the cutting position, maintaining both wide cutting efficiency and work accuracy
Data Source
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AI summary
The purpose of the present invention is to make it possible to continue work without any reduction in work efficiency and work accuracy. This work machine with a reciprocating cutting blade is provided with: an operation pole; a reciprocating cutting blade device disposed in a T shape at the distal end of the operation pole; an operation handle provided on the base end side of the operation pole and having a grip on the upper side of the operation pole; and a driving unit which is provided at the base end of the operation pole and drives the reciprocating cutting blade device through a drive shaft within the operation pole. The driving unit is provided with: a motor disposed substantially coaxially with the operation pole; and a battery unit for supplying power to the motor. The position of the battery unit in the driving unit is set so that the center of gravity of the machine body with the battery unit mounted thereon approaches the rotary axis of the machine body when an operator holds the operation handle and rotates the machine body such that the reciprocating cutting blade device stands with one of the left and right ends of the reciprocating cutting blade device as a pivot.