Pivot Bar Engine Hood Mounting for High-Clearance Sprayer Access
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Solution Overview
Problem
High-clearance agricultural sprayers face challenges in accessing and servicing engine compartments due to limited space and complex designs, requiring an improved engine hood mounting system that allows for easier access during inspection and serviceability.
Innovation Solution
An engine hood mounting system that rotatably couples the engine hood to the chassis frame using pivot joints and pivot bar assemblies, allowing the hood to pivot out of the way and provide wide exposure of the engine compartment for improved access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the engine compartment uses multiple panels and covers supported by an outer engine frame, then the engine compartment can be accessed from different directions, but the space for accessing components is limited and disassembly is required when more space is needed
Solution Approach 1:
The engine hood is divided into multiple functional sections: a top wall portion, a rear wall portion, and side wall portions. This segmentation allows each section to be independently positioned and accessed, enabling service personnel to reach different engine components from various angles without complete disassembly of the entire hood structure.
Solution Approach 2:
The engine hood is designed with dynamic, movable portions including the rear wall that can pivot relative to the top wall. This dynamic configuration allows the hood to be opened in multiple directions and positions, providing flexible access paths to engine components without requiring complete removal of fixed panels and covers.
2Ease of operation
If the engine hood is fixed in position, then the structure is simple and stable, but access to engine components is limited and requires disassembly of panels and covers
Solution Approach 1:
The engine hood incorporates dynamic, movable portions including the rear wall that can pivot relative to the top wall through a pivot bar assembly. This dynamic configuration allows the hood to be opened in multiple directions and positions, providing flexible access paths to engine components while maintaining structural stability when closed.
Solution Approach 2:
The pivot bar assembly is nested within the engine hood structure, with the pivot bar positioned inside a channel formed in the top wall. This nested configuration allows the movable rear wall to pivot without requiring external mounting structures, maintaining a compact and stable overall structure while enabling enhanced serviceability.
3Productivity
If high-clearance sprayers are made larger and more complex to increase coverage, then application efficiency improves, but the engine compartment becomes more crowded and harder to service
Solution Approach 1:
The engine hood is designed with dynamic, movable portions including the rear wall that can pivot relative to the top wall. This dynamic configuration allows service personnel to access crowded engine compartments from multiple angles and positions, making it easier to service accessories and systems in larger, more complex high-clearance sprayers where space is limited.
Data Source
AI summary
An engine hood mounting system includes an engine hood having at least one engine hood pivot support disposed on an inner surface thereof, at least one pivot joint located on a chassis frame of the agricultural machine, and at least one pivot bar assembly configured to interfit with a respective pivot joint and engine hood pivot support. The at least one pivot bar assembly includes an outer pivot bar having a first end and a second end and an inner pivot bar disposed within the outer pivot bar having a first end and a second end. The outer pivot bar and the inner pivot bar are coupled to each other via at least one fastener. Further, the at least one pivot bar assembly, its respective engine hood pivot support, and its respective pivot joint are oriented along a rotation axis.