Draper Belt Guiding Unit for Pivot Joint Belt Deflection
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Solution Overview
Problem
Existing drapers experience conveyor belt deflection and lifting issues at bending points, leading to loss of sealing and increased wear due to the pivoting movement of lateral segments, which compromises flexibility and working width adaptation to soil contours.
Innovation Solution
A draper design incorporating a belt guiding unit with a guide roller and retainers that adjust to soil contour changes, ensuring continuous belt guidance and preventing lifting, using a combination of rigid and flexible materials to minimize wear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If side segments are pivotably connected to adapt to soil contours, then flexibility and working width adaptation are improved, but conveyor belt deflection and lifting occur at bending points
Solution Approach 1:
A guide roller is introduced as an intermediary element at the bending point between the middle and side segments. This guide roller mediates the belt passage through the pivot joint region, preventing belt deflection and lifting while allowing the side segments to pivot for adapting to soil contours.
Solution Approach 2:
The guide roller is positioned in advance at the bending point location before the belt enters the pivot region. This preliminary positioning ensures the belt is properly guided through the bending point, preventing deflection and lifting issues that would otherwise occur during pivoting operations.
2Adaptability or versatility
If side segments pivot about horizontal axis, then flexibility for soil contour adaptation is improved, but belt lifting occurs causing loss of sealing
Solution Approach 1:
The guide roller acts as a mediator that prevents the harmful effect of belt lifting at the bending point. It maintains proper belt tension and guidance through the pivot region, ensuring sealing is maintained even when side segments pivot for soil contour adaptation.
3Adaptability or versatility
If belt passes through bending point during pivoting, then flexibility is improved, but wear increases due to deflection
Solution Approach 1:
The guide roller serves as a protective intermediary that reduces wear on the conveyor belt during pivoting operations. By properly guiding the belt through the bending point, it prevents excessive deflection and friction that would otherwise accelerate belt wear and reduce service life.
Data Source
AI summary
A draper for an agricultural machine. The draper includes a middle segment and two side segments, each with a frame, a flexible cutter bar, that is arranged or positioned on support arms pivotably articulated to the frame, as well as one or more continuously circulating conveyor devices arranged or positioned behind the cutter bar. The one or more conveyor device comprises a first guide roller that is arranged or positioned on the middle segment, and a second guide roller that is arranged or positioned at the end on the particular side segment around which the endless conveyor belt circulates. The two side segments are each pivotably connected to the middle segment by a frame joint about a pivot axis running substantially horizontally. The particular side segment has a belt guiding unit with a guide roller.