Work Machine GNSS Antenna Mounting to Prevent External Removal
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Solution Overview
Problem
Antennas for global navigation satellite systems (GNSS) in work machines are easily removable from the outside, making them susceptible to theft, and frequent attachment and detachment lead to harness degradation.
Innovation Solution
The antennas are fixed to the vehicle body upper surface frame from inside a housing space, with at least a portion disposed above the frame, using a fixing part that includes coupling members and seats to secure them in place, preventing external removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the antenna is disposed at the tip end part of the mast, then the antenna is easily accessible for installation and maintenance, but the antenna can be easily removed from the outside making it susceptible to theft
Solution Approach 1:
The antenna is nested within the vehicle body upper surface frame structure. The fixing part is configured to fix the antenna from inside the housing space, with at least a portion of the antenna disposed above the vehicle body upper surface frame. This nesting approach allows the antenna to be accessible for signal reception while preventing external removal and theft.
2Adaptability or versatility
If the antenna is repeatedly attached and detached from the mast, then maintenance and replacement become possible, but the harness becomes degraded
Solution Approach 1:
The antenna is pre-fixed to the vehicle body upper surface frame using a fixing part that can be operated from inside the housing space. This preliminary fixation approach eliminates the need for repeated attachment and detachment operations, thereby preventing harness degradation while still allowing maintenance when necessary by accessing the fixing mechanism from within the housing space.
3Reliability
If the antenna is fixed from inside the housing space, then external removal is prevented, but the fixing mechanism becomes more complex
Solution Approach 1:
The vehicle body upper surface frame serves multiple functions: it provides structural support, defines the housing space, and acts as the mounting structure for the antenna. The fixing part utilizes the existing frame structure and housing space, eliminating the need for separate complex external mounting mechanisms while achieving theft prevention.
Data Source
AI summary
A work machine includes a vehicle body upper surface frame, a housing space, and a fixing part. The housing space is positioned below the vehicle body upper surface frame. The fixing part fixes an antenna to the vehicle body upper surface frame from inside the housing space so that at least a portion of the antenna is disposed above the vehicle body upper surface frame.