Pivoting Side Draper Frame for Belt Replacement
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Solution Overview
Problem
The existing methods for replacing endless belts in draper headers are time-consuming and physically demanding due to the size and weight of the side conveyors, making it difficult for a single person or even a pair of people to remove and replace the belts without mechanical assistance.
Innovation Solution
The implementation of a height adjuster with an adjustable working length, which allows the side draper frame to pivot upward, enabling the rollers to be lifted and the belts to be removed easily by sliding them off without cutting or separating, facilitated by a system of brackets and hinges that secure the belt in place until replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the side draper conveyor is designed with large size and weight to handle crop effectively, then the conveyor can perform its function reliably, but it becomes difficult for a single person or even a pair of people to remove and replace the belts without mechanical assistance
Solution Approach 1:
The side draper frame is made pivotable about a transverse pivot axis, transforming it from a static structure to a dynamic one. This allows the frame to be tilted upward during belt replacement, mechanically assisting the removal process while maintaining structural integrity during operation. The pivot mechanism enables the heavy frame to be easily repositioned when needed.
Solution Approach 2:
A strut is introduced as an intermediary component between the side draper frame and the main frame. The strut acts as a mechanical assistant that supports the weight of the side draper frame during belt replacement, making it feasible for a single person to perform the task. The strut is removable, allowing it to serve its supporting function only when needed.
2Ease of manufacture
If the typical method of breaking the belt longitudinally at a splice and working it out is used, then the belt can be removed, but the process is time consuming
Solution Approach 1:
The endless belt is pre-configured with a longitudinal split that extends partially along its length, but the belt remains intact as an endless loop during operation. This preliminary preparation allows the belt to be easily removed by sliding it off the rollers without cutting or complex manipulation, significantly reducing replacement time while maintaining belt integrity during use.
3Ease of manufacture
If the endless belt is left intact in the form of an endless loop, then the belt can be slid off the rollers without cutting, but the process becomes difficult or impossible for a single person or pair of people to do given the size and weight of the conveyors
Solution Approach 1:
The side draper frame's pivotability allows it to be tilted upward, creating mechanical advantage that reduces the physical effort needed to slide the heavy endless belt off the rollers. The dynamic repositioning of the frame makes the simple sliding-off method feasible for individual operators.
Solution Approach 2:
The removable strut serves as a mechanical intermediary that temporarily supports the side draper frame's weight during belt replacement. This external support system enables a single person to handle the heavy belt without excessive physical strain, combining the simplicity of sliding the belt off with reduced physical demand.
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 allows for a quick and easy replacement of endless side draper belts, enabling a single person to manage the process by lifting the side draper frame and reducing the physical effort required, thus streamlining the maintenance process.
Implementation Method 1
The height adjuster may be a threaded fastener
Implementation Method 2
at least one hinge configured to couple the side draper frame to the main draper frame
Implementation Method 3
at least one height adjuster that has an adjustable working length and is disposed to pivot the side draper frame upward about an axis of rotation defined by the at least one hinge
Data Source
Figure 1
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Figure 3
AI summary
A draper header (100) may have a side conveyor (104, 106) that is either pivotable to or holdable in a pivoted position by a height adjuster (or both).