Excavator Battery Mounting Structure for Vibration-Stable Support
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Solution Overview
Problem
Existing revolving work machines with battery units supported from a left-right direction lack sufficient integrity and stability against vibrations, particularly when used on uneven land.
Innovation Solution
A fixing mechanism with an upper and lower plate sandwiching the battery unit from an up-down direction, supported by a support portion on the machine-body frame, enhances stability by integrating the battery unit with the frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery unit is supported from the left-right direction using a standing frame, then the battery unit can be supported on the revolving platform, but the upper surface of the battery unit is not supported, resulting in insufficient integrity and stability against vibration
Solution Approach 1:
The support structure transitions from lateral support (left-right direction) to vertical sandwich support (up-down direction). The upper plate and lower plate sandwich the battery unit from the vertical dimension, providing support for the previously unsupported upper surface while maintaining structural simplicity through the vertical loading path.
2Device complexity
If the battery unit is supported only from the left-right direction, then the support structure is simpler, but the integrity and stable support against vibration is insufficient
Solution Approach 1:
The support function is merged into a comprehensive sandwich structure where the upper plate, lower plate, and support portion work together as an integrated system. This combination provides multi-point contact (upper surface, lower surface, and side surfaces) that simultaneously achieves structural integrity and vibration resistance without excessive complexity.
Data Source
AI summary
A hydraulic excavator as an electric work machine includes an electric motor, a machine-body frame, a battery unit that stores electric power to drive the electric motor, and a fixing mechanism that fixes the battery unit to the machine-body frame. The fixing mechanism has an upper plate and a lower plate that sandwich the battery unit from an up-down direction and a support portion that supports the lower plate on the machine-body frame.