Parking Device Cover Plate Prevents Wheel Contamination
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Solution Overview
Problem
The existing parking device for three-point hitch machines allows fertilizer particles to accumulate on the running wheels and pivot bearings, posing a risk of injury when the operator adjusts the parking device by stepping on the wheels, as the rotation can cause accidents.
Innovation Solution
A cover plate is integrated with a recess to securely fasten on the holder, preventing particle accumulation and providing a non-slip surface, while a circular sealing element prevents particles from entering the gap between the cover plate and impeller, ensuring safe adjustment and protection from accidental rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the running wheels are left exposed for easy access and adjustment, then the operator can easily step on the wheels to adjust the parking device, but fertilizer particles accumulate on the wheels and pivot bearings creating safety hazards
Solution Approach 1:
A cover plate is introduced as an intermediary element between the operator's foot and the running wheel. The cover plate allows the operator to step on it to adjust the parking device while preventing fertilizer particles from directly contacting and accumulating on the wheel and pivot bearing areas.
Solution Approach 2:
The cover plate is divided into functional zones: a non-slip area for operator foot placement, a sealing element to prevent particle ingress, and an impeller protection area. This segmentation allows different parts of the cover plate to address different aspects of the problem simultaneously.
2Object-affected harmful factors
If the running wheels are covered to prevent particle accumulation, then fertilizer particles are blocked from reaching the pivot bearings, but the operator loses direct access to the wheels for adjustment
Solution Approach 1:
The cover plate serves as a mediator that transmits the operator's adjustment force to the parking device mechanism while maintaining protection. The operator steps on the cover plate's non-slip area, which is mechanically connected to the parking device, allowing indirect adjustment without direct wheel contact.
Solution Approach 2:
The cover plate performs multiple functions simultaneously: it protects the running wheel and pivot bearing from particle accumulation, provides a non-slip surface for operator foot placement, and serves as a mechanical interface for adjusting the parking device position.
3Object-affected harmful factors
If a cover plate is added to protect the running wheels, then particle accumulation is prevented, but the device complexity increases
Solution Approach 1:
Multiple protective and functional elements are merged into a single integrated cover plate component. The non-slip area, sealing element, and impeller protection features are all combined in one piece rather than being separate components, simplifying the overall structure while maintaining comprehensive protection.
Solution Approach 2:
The cover plate is designed as a thin, lightweight protective element that covers the running wheel area without adding significant structural complexity. The plate can be simple in form while effectively preventing particle ingress through its basic covering function combined with a sealing element.
Data Source
AI summary
The device has storage support (3) that is arranged in frame (1) of machine by joint arrangement. The rotor wheels (8) are rotatably arranged at lower end of mounting plates (9,10). A cover plate (13) is arranged on one side of the rotor wheels, and is mounted on holder (12). The upward facing side of rotor wheels is covered by the cover plate in non parking position of support arm (7). The contact region of the rotor wheels is covered by cover plate in parking position of support arm, so that outer periphery of wheels does not protrude above the contact region of wheels.