Cleaning Flaps for Center Knife Drive Debris Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Center knife drives in plant cutting machines suffer from accumulation of loose crop material and debris, leading to overheating, premature failure, and restricted movement due to their location below the floor, and existing solutions are ineffective in preventing material accumulation beyond the path of the driving lever or knife arm and through openings in the floor.
Innovation Solution
The apparatus includes cleaning flaps connected to reciprocating output members that move above the cover of the center knife drive, pushing loose material over the rear edge of the cover during the reciprocating motion, effectively cleaning the upper surface and preventing accumulation, even in areas distant from the path of the driving lever or knife arm, while allowing for upward movement of the drive in a flexible sickle configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the center knife drive is located below the floor to provide compact structure and efficient motion translation, then the device complexity is reduced and productivity is improved, but loose crop material and debris accumulate on the drive housing, causing overheating and premature component failure
Solution Approach 1:
The harmful accumulated material is extracted from the drive housing area by introducing cleaning flaps that actively remove loose crop material and debris from the housing surface, preventing insulation and overheating of drive components
Solution Approach 2:
Cleaning flaps serve as an intermediary element between the drive housing and the accumulated material, providing a mechanical means to remove the harmful substance without altering the compact drive structure or requiring additional complex systems
2Device complexity
If the center knife drive is positioned in or below the floor, then the structure is more compact, but accumulated material becomes lodged between the drive and the floor, limiting upward movement of the drive and restricting sickle float mode operation
Solution Approach 1:
The cleaning flaps extract and remove accumulated material from between the drive housing and the floor, preventing compaction that would restrict upward movement of the drive and maintain sickle float mode functionality
Solution Approach 2:
The cleaning flaps perform preliminary removal of material before it can become lodged and compacted between the drive and floor, preventing the formation of obstructions that would limit drive movement range
3Ease of operation
If existing cleaning apparatus such as triangular distributing members are used to deflect material, then some material distribution is achieved, but material accumulates on adjacent regions of the cover beyond the lever path, and crop loss through floor openings is not prevented
Solution Approach 1:
The cleaning flaps actively extract and remove loose crop material from the housing surface and floor opening areas, preventing material accumulation that would otherwise fall through floor openings and cause crop loss
Solution Approach 2:
The cleaning flaps act as an intermediary mechanism that captures and redirects material before it can fall through floor openings, providing a more effective solution than simple deflection by triangular distributing members
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A center knife drive (64) for a sickle (30) of a plant cutting machine (20), having an upwardly facing cover (70) and at least one output element (78, 80) reciprocatingly movable by the drive (64) above the cover (70) for moving a knife (58) of the sickle (30) in a sideward reciprocating cutting action, including at least one cleaning flap (104, 106) in connection with the output element (78, 80) positioned and configured for reciprocating forward and rearward movement thereby, disposed above the cover (70) and configured for cleaning loose material therefrom during the movement and for pushing the loose material from the cover (70), to accommodate upward movement of the drive (64) within a space (72) below or in a floor (28) of the machine (20), clearing the material from the path of the output element (78, 80), and improved heat dissipation.