Draper Platform Center Conveyor Belt Replacement
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Solution Overview
Problem
The existing center conveyor systems in draper platforms of agricultural combines are cumbersome and time-consuming to replace, as they require disassembly and reassembly of the entire belt, making it difficult to swap out a damaged endless belt without cutting or joining the belt itself, especially with the presence of side conveyors that complicate the process.
Innovation Solution
A center conveyor design that allows for the quick removal and replacement of the endless belt by pivoting downward and sliding it parallel to the rollers, utilizing brackets and a belt tensioner to release tension and facilitate easy access, enabling the belt to be removed and installed without cutting or joining the belt, and allowing for easy alignment around the side conveyors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the center conveyor belt is designed as a traditional endless belt, then the belt can continuously convey crop material, but the belt becomes difficult and time-consuming to replace when damaged
Solution Approach 1:
The endless belt is divided into multiple discrete belt sections that can be independently removed and replaced. Each section is connected to adjacent sections via removable connectors, allowing the belt to be segmented into manageable units for easy replacement while maintaining continuous conveyance capability during operation
Solution Approach 2:
The belt connector design allows for dynamic assembly and disassembly. The connectors can be quickly engaged and disengaged without permanent fastening, enabling the belt to transition between a continuous operational state and a replaceable maintenance state, significantly improving ease of repair
2Ease of repair
If the center conveyor belt is designed to be easily removable, then belt replacement becomes quick and simple, but the belt cannot maintain continuous conveyance during operation
Solution Approach 1:
The belt is segmented into multiple sections that can be independently handled. When replacement is needed, only the damaged section needs to be removed and replaced, while other sections remain in place to maintain continuous conveyance capability, resolving the contradiction between ease of repair and operational reliability
Solution Approach 2:
The belt sections are pre-configured with connectors that allow for quick assembly. The replacement section is prepared in advance with attached connectors, allowing for rapid installation that maintains continuous conveyance with minimal interruption to operation
3Ease of manufacture
If the existing damaged belt is removed by cutting across its width, then the belt can be taken apart, but the entire length of the belt must be worked out around the rollers making replacement time-consuming
Solution Approach 1:
Instead of cutting the entire belt, the segmentation principle allows removal of only the damaged section through the removable connectors. This eliminates the need to work out the entire belt length around the rollers, significantly reducing replacement time while maintaining ease of disassembly
Solution Approach 2:
The damaged belt section is extracted from the system by disconnecting only that specific segment through the removable connectors. This extraction method avoids the time-consuming process of removing the entire belt, allowing quick replacement of only the faulty portion
4Productivity
If the side conveyors extend over the top of the center conveyor belt, then the side conveyors can convey crop material effectively, but inserting a new center conveyor belt becomes even more difficult
Solution Approach 1:
The segmented belt design allows the new center conveyor belt to be inserted section by section. The removable connectors enable each section to be independently positioned and connected, making insertion feasible even with side conveyors overhead, while maintaining effective crop conveyance capability
Data Source
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AI summary
A draper platform (100) has a center endless belt conveyor (118) that is supported on and between first and second adjacent support arms (246A, 246B). The center endless belt conveyor (118) is releasable from a first support arm (246A) of the two adjacent support arms to pivot downward away from the first support arm of the two adjacent support arms a distance sufficient to slidably remove an endless conveyor belt (134) from the center endless belt conveyor in a direction parallel to the axes of rotation of the rolls (300, 302) that support the endless conveyor belt.