Spring-Loaded Latch Cover for Row Crop Header
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Solution Overview
Problem
Current corn heads require time-consuming processes for transporting and servicing due to cumbersome hardware and limited access for cleanout and repair, with manual locking and height adjustment being particularly labor-intensive and often requiring two people.
Innovation Solution
A point and cover assembly with spring-loaded latch pins and an adjustable point rest, allowing for quick one-handed operation to support points at multiple heights and facilitate easy access for cleanout and repair, featuring a quick coupler and fine adjuster for efficient height adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual locking and height adjustment mechanisms are used for transport and service, then the structure can be securely held, but the operation becomes time-consuming and labor-intensive requiring two people
Solution Approach 1:
The spring-loaded latch pins automatically engage with the row units when the cover is lowered, and automatically release when the cover is raised, eliminating the need for manual locking operations. The system serves itself by using the cover's own weight and spring force to perform the locking and unlocking functions.
Solution Approach 2:
The single cover is divided into multiple latch pins distributed at different locations, allowing independent engagement with multiple row units. This segmentation enables the cover to be secured at multiple points simultaneously, providing reliable holding while allowing quick release through a single lifting motion.
2Reliability
If two cover release latches are used to secure the deck cover, then the cover can be held securely, but both hands are required to release the cover leaving no hands to lift the cover
Solution Approach 1:
Multiple latch pins are merged into a single integrated cover structure, all controlled by one lifting motion. Instead of operating separate latches independently, the unified latch system allows the operator to release all securing points simultaneously by lifting the cover, requiring only one hand for the release operation.
Solution Approach 2:
Instead of requiring downward force to engage latches and upward force to disengage them separately, the system is inverted so that the natural lifting motion (upward force) simultaneously disengages all latches. The spring-loaded pins are designed to be held down by the cover weight during operation and automatically release when the cover is lifted.
3Reliability
If jackknifing or manual locking is used for transport position, then the points can be supported, but access to row units is restricted and cleanout is hindered
Solution Approach 1:
The point support system transitions from a static jackknifed position to a dynamic adjustable position. The point can be quickly raised to an elevated transport position for secure support during transport, then easily lowered to a working position that provides unobstructed access to row units for cleanout and maintenance operations.
Solution Approach 2:
The point is pre-positioned in a raised transport configuration that provides secure support during transit. Before operational use, the point is simply lowered to the working position, eliminating the need for complex disassembly or manual manipulation to gain access to row units.
4Reliability
If cumbersome hardware is used to hold down the deck cover, then the cover can be secured, but quick opening and closing for cleanout or repair is prevented
Solution Approach 1:
The spring-loaded latch pins use the cover's own weight and the spring force to automatically engage and disengage. No external actuators, hydraulic systems, or complex mechanical linkages are required. The system performs its own securing and releasing functions through the natural motion of lifting or lowering the cover.
Solution Approach 2:
Complex mechanical locking systems with multiple moving parts are replaced by a simple spring-loaded pin mechanism. The spring provides the holding force, and the cover's weight provides the actuating force, eliminating the need for motors, hydraulics, or multi-component mechanical linkages that would slow down operations.
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
Enables rapid and single-person operation for raising and lowering deck covers and points, significantly reducing the time required for adjustments and improving access for maintenance, thereby enhancing operational efficiency and convenience.
Implementation Method 1
a first spring-loaded latch pin for pinning the cover to a first row unit, a second spring loaded latch pin for pinning the cover to a second row unit
Data Source
AI summary
The invention comprises a point and cover assembly for a row crop header including a point; a cover coupled to the point with a hinge; a latch fixed to the cover, the latch having a first spring-loaded latch pin for pinning the cover to a first row unit, a second spring loaded latch pin for pinning the cover to a second row unit, and a member coupling the two latch pins together that is operable by one hand to release both latch pins; and a point support fixed to the cover, the point support comprising an elongate member fixed at its rear end to the cover and having an adjustable point rest at its front end for supporting the point at a plurality of different heights.