Grass Marking Device Perforated Sheet Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for marking grass surfaces, whether natural or artificial, either damage the grass through physical stress or use hazardous chemical products, and are not effective in creating lasting visual contrasts.
Innovation Solution
A marking device featuring a mowing drum with a perforated sheet that allows grass blades to pass through, reducing stress and damage, and adjusts cutting angles for different visual effects, eliminating the need for heavy systems or chemicals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If irons are used to flatten grass blades for marking, then visual contrast is created, but grass damage occurs and markings are not lasting
Solution Approach 1:
The marking device segments the grass blade interaction into two distinct functions: the perforated sheet guides and bends the grass blades without damage, while the cutting elements separately trim the blades at an angle. This segmentation allows visual marking through blade orientation change without the crushing damage caused by traditional irons.
Solution Approach 2:
The invention changes the physical parameter of grass blade orientation through mechanical guidance and cutting rather than compression. By cutting blades at an angle and positioning them through the perforated sheet openings, the device creates visual contrast through blade direction changes rather than flattening, thus avoiding grass damage.
2Illumination intensity
If chemical products are used to mark grass surfaces, then visual contrast is achieved, but grass damage and safety hazards occur
Solution Approach 1:
The invention replaces the chemical marking system with a purely mechanical system. Instead of applying chemical substances to alter grass appearance, the device uses mechanical means (perforated sheet guidance and angled cutting) to physically reorient grass blades, creating visual contrast without chemical involvement and thus eliminating associated hazards.
3Illumination intensity
If traditional lawn-mowers with variable angle blades are used, then grass marking is achieved, but control difficulty and handling complexity increase
Solution Approach 1:
The device separates the marking function from the cutting function. The perforated sheet provides the guiding and bending action that creates visual contrast, while the cutting elements simply trim the blades. This segmentation eliminates the need for complex variable-angle blade mechanisms, simplifying control and handling while achieving the same visual marking effect.
4Illumination intensity
If heavy marking systems are used to flatten grass, then marking capability is achieved, but grass stress and damage increase
Solution Approach 1:
The invention changes the mechanism from compression-based marking to orientation-based marking. Instead of using heavy systems to crush and flatten grass blades, the device uses light mechanical guidance through perforated openings and angled cutting to reorient blades, creating visual contrast without applying damaging stress or pressure to the grass.
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
A device for marking natural and artificial grass surfaces, which comprises a mowing drum linked to a chassis, wherein the mowing drum comprises a plurality of cutting elements and can rotate around a main shaft, where a perforated sheet is arranged between the mowing drum and the grass surface, with said perforated sheet comprising a plurality of holes cut to an appropriate size so as to allow blades of grass to pass through them, in addition to an opening configured to facilitate the passage blades of grass to be cut by the cutting element.