ROPS Support Layout for Positioning Unit Harness Clearance
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Solution Overview
Problem
The existing ROPS frame configurations in tractors pose a risk of the harness connection part of the positioning unit coming into contact with the work machine, potentially causing damage due to its positioning and the need for additional structural modifications that could weaken the frame.
Innovation Solution
A support unit is integrated into the ROPS frame, positioned to protrude behind the harness connection part of the positioning unit, which supports the antenna unit from below and positions the harness connection part in a way that avoids contact with the work machine, thereby reducing the risk of damage and maintaining the structural integrity of the ROPS frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the harness connection part is positioned in the back part of the positioning unit, then the positioning unit can be installed on the ROPS frame, but the harness connection part may come into contact with the work machine and be damaged
Solution Approach 1:
The patent introduces a protective cover as an intermediary component between the harness connection part and the work machine. This cover physically shields the harness connection part from contact with the work machine, eliminating the harmful interaction while allowing the positioning unit to maintain its functional positioning on the ROPS frame.
Solution Approach 2:
The patent repositions the harness connection part from the back surface to the side surface of the positioning unit. This spatial reconfiguration changes the dimensional arrangement, allowing the harness connection part to be positioned in a location that does not conflict with the work machine's movement space while remaining accessible for connection purposes.
2Reliability
If additional structural modifications are made to protect the harness connection part, then contact damage is prevented, but the structural integrity of the ROPS frame may be weakened
Solution Approach 1:
The patent divides the protective function into a separate, modular protective cover component rather than integrating protection directly into the ROPS frame structure. This segmentation allows the frame to maintain its original structural integrity while the separate cover provides the necessary protection for the harness connection part.
Solution Approach 2:
The protective cover is designed as a thin-walled structure that provides adequate protection for the harness connection part without adding significant structural load or compromising the ROPS frame's strength. The cover acts as a lightweight protective barrier that fulfills the protection requirement while minimizing impact on frame integrity.
Data Source
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AI summary
[Problem] To reduce the risk of a harness connection part of a positioning unit coming into contact with a work machine thereby to be damaged. [Solution] 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.