Harvester Off-Ground Detection Using Sliding Travel Mechanism
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Solution Overview
Problem
Existing harvesters face safety issues due to uneven grass surfaces and external forces, necessitating improved safety mechanisms to prevent accidents during operation.
Innovation Solution
An off-ground detection device with a travel mechanism that moves between first and second positions to control harvester operation, incorporating a sliding structure, rotating structures, and sensors to detect abnormal states, ensuring safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the harvester operates continuously on uneven terrain, then productivity is maintained, but safety risks increase due to potential off-ground conditions
Solution Approach 1:
The off-ground detection device performs preliminary detection of terrain conditions before the harvester encounters problematic situations. The travel mechanism continuously monitors ground contact status, and when off-ground conditions are detected, the system proactively stops operation to prevent safety incidents, rather than waiting for actual damage or failure to occur.
2Reliability
If the travel mechanism is added to detect off-ground conditions, then safety is improved, but device complexity increases
Solution Approach 1:
The travel mechanism serves multiple functions: it detects off-ground conditions through the sliding structure's position changes, provides structural support for the detection system, and integrates with the existing harvester frame. The sliding structure both monitors terrain contact and can potentially serve as part of the suspension or positioning system, reducing the need for separate dedicated components.
Solution Approach 2:
The detection system utilizes the harvester's own structural movements and position changes to generate detection signals. When the harvester body moves relative to the travel mechanism during operation, this naturally triggers the sliding structure to indicate ground contact status, eliminating the need for external power sources or complex sensor systems.
3Measurement precision
If the sliding structure moves between positions to detect terrain, then detection accuracy is improved, but ease of operation decreases due to mechanical complexity
Solution Approach 1:
The system replaces complex electronic sensor arrays with a simple mechanical sliding structure that passively responds to terrain conditions. The sliding structure's movement between positions is driven purely by mechanical forces from ground contact, eliminating the need for powered actuators, complex control algorithms, or multiple sensors, thereby maintaining operational simplicity while achieving reliable detection.
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
The device effectively prevents accidents by stopping the harvester when abnormal conditions are detected, enhancing safety and adaptability to uneven terrain.
Implementation Method 1
the cushion structure includes a cushion mount and an elastic member, the cushion mount being connected to the frame and the elastic member, and the elastic member being connected to the connecting member and cushioning the impact on the travel mechanism
Data Source
AI summary
An off-ground detection device applicable to a harvester. The off-ground detection device includes a frame and a travel mechanism, the travel mechanism is movably arranged on the frame, and the travel mechanism has a first position and a second position relative to the frame. When the travel mechanism is in the first position, the harvester stops operating, and when the travel mechanism is in the second position, the state of the harvester remains unchanged.