Work Machine Antenna Mounting Segmentation
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Solution Overview
Problem
The existing work machines with multiple antennas mounted using a cab guard cover the entire upper portion of the cabin, leading to a large and heavy structure that hinders weight reduction and size minimization.
Innovation Solution
The work machine incorporates a first and second antenna, each supported by separate brackets on the occupant unit, allowing them to be separated and reducing interference, thus enabling a smaller and lighter design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple antennas are mounted using a cab guard that covers the entire upper portion of the cabin, then antenna reception sensitivity is improved, but the mounting structure becomes large and heavy
Solution Approach 1:
The patent divides the mounting structure into separate brackets for each antenna, rather than using a single comprehensive cab guard. Each bracket is independently mounted to the cabin, allowing the antennas to be positioned at different locations without requiring a large unified mounting structure. This segmentation reduces the overall weight and size of the mounting system while maintaining proper antenna positioning for reception sensitivity.
2Measurement precision
If multiple antennas are mounted using a cab guard that covers the entire upper portion of the cabin, then antenna reception sensitivity is improved, but the mounting structure size increases
Solution Approach 1:
The mounting structure is segmented into multiple independent brackets distributed at different locations on the cabin, eliminating the need for a single large cab guard that covers the entire upper portion. Each bracket is compact and mounted only where needed to support individual antennas, significantly reducing the overall area occupied by the mounting structure.
Solution Approach 2:
Instead of providing uniform coverage across the entire upper portion of the cabin, the mounting structure is applied locally only at specific positions where antennas need to be mounted. Each bracket is positioned precisely where an antenna requires support, avoiding unnecessary structure in areas where antennas are not installed, thus reducing the overall mounting structure area.
3Volume of moving object
If antennas are positioned close to the work implement, then the work machine can be more compact, but the antenna closer to the work implement experiences interference and lower reception sensitivity
Solution Approach 1:
The patent uses separate mounting brackets for each antenna, allowing precise positioning of each antenna independently. This enables the work machine to maintain a compact overall size while ensuring that each antenna is positioned at an optimal location and orientation, including appropriate spacing from the work implement, to avoid interference and maintain reception sensitivity.
Solution Approach 2:
The mounting brackets are designed with asymmetric configurations that allow antennas to be positioned at different heights and angles relative to the work implement. This asymmetric positioning enables the antenna closer to the work implement to be oriented or positioned in a way that minimizes interference from the work implement while maintaining the compact size of the work machine.
Data Source
AI summary
A work machine includes a machine body, a first antenna and a second antenna, a first bracket, and a second bracket. The machine body includes an occupant unit capable of accommodating an occupant. The first antenna and the second antenna are disposed on the occupant unit to be separated from each other in a plan view. The first bracket is supported by the occupant unit and supports the first antenna. The second bracket is provided separately from the first bracket, is supported by the occupant unit, and supports the second antenna.