ROPS-Mounted GNSS Support Layout to Prevent Harness Contact
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Solution Overview
Problem
The existing positioning units in tractors face a risk of damage due to the harness connection part coming into contact with the work machine when the positioning unit is fixed to the ROPS frame, which can compromise the structural integrity and operational safety.
Innovation Solution
A support unit is positioned above the ROPS frame to protrude behind the harness connection part of the positioning unit, preventing contact with the work machine and maintaining the structural integrity of the ROPS frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the positioning unit is fixed to the upper part of the ROPS frame, then the positioning function is achieved, but the harness connection part may come into contact with the work machine and be damaged
Solution Approach 1:
The patent introduces a support unit as an intermediary component between the ROPS frame and the positioning unit. This support unit extends backward to position the harness connection part of the positioning unit behind the work machine's path, preventing contact and damage while maintaining the positioning function.
Solution Approach 2:
The patent positions the harness connection part in the longitudinal dimension (backward direction) by using the support unit to extend behind the positioning unit. This spatial repositioning in the longitudinal dimension separates the harness connection part from the work machine's operational space, eliminating the damage risk.
2Ease of manufacture
If the harness connection part is positioned in the back part of the positioning unit, then the positioning unit can be mounted on the ROPS frame, but the harness connection part is exposed to contact with the work machine
Solution Approach 1:
The support unit serves as a protective intermediary that extends backward from the ROPS frame to reposition the harness connection part. This intermediary structure maintains the ease of mounting the positioning unit on the ROPS frame while simultaneously protecting the harness connection part from work machine contact.
3Reliability
If the support unit protrudes behind the harness connection part, then the harness connection part is protected from contact with the work machine, but the structural complexity increases
Solution Approach 1:
The support unit is designed to perform multiple functions: it serves as both the mounting structure for the positioning unit and the protective element that prevents work machine contact with the harness connection part. This multi-functionality reduces the need for separate protective components, thereby limiting the increase in structural complexity.
Data Source
AI summary
A work vehicle includes: a vehicle body to which a work machine is connected at a back, a roll-over protection structure frame that, in the vehicle body, is erected in a back part of a drive seat, a positioning unit that, based on a signal sent from a positioning satellite, detects a position of the vehicle body, and a support unit that is fixed to an upper part of the roll-over protection structure frame, and supports the positioning unit from below. The positioning unit has a harness connection part that is connected with a harness for sending information to outside. The harness connection part is positioned in a back part of the positioning unit. The support unit is so positioned as to protrude behind the harness connection part of the positioning unit.