Electric Excavator Battery Support Frame on Revolution Main Beam
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Solution Overview
Problem
Existing electric excavator designs face challenges in supporting the weight of batteries effectively, requiring significant changes to the machine-body frame to enhance strength, particularly in the rear end portion.
Innovation Solution
The electric excavator incorporates a revolution frame with a bottom plate and main beams that extend forward and rearward, supporting a battery attachment support body. This configuration allows for appropriate battery support with a simplified structure, minimizing changes to the revolution frame design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a shelf is arranged in the rear end portion of the machine-body frame to support the battery, then the battery can be supported, but the strength of the entire rear end portion must be significantly improved requiring major design changes
Solution Approach 1:
A battery support frame is introduced as an intermediary component between the battery and the machine-body frame. The battery support frame is attached to the front end portion of the machine-body frame rather than the rear end, distributing the battery weight to a structurally stronger area without requiring reinforcement of the rear end portion. This mediator structure resolves the contradiction by enabling battery support while avoiding major design changes to the machine-body frame.
2Strength
If the machine-body frame is significantly changed to support the battery weight, then adequate strength is achieved, but the original design is lost and complexity increases
Solution Approach 1:
The battery support function is segmented from the machine-body frame structure. Instead of modifying the main frame to support the battery, a separate battery support frame is created as an independent component. This segmentation allows the machine-body frame to maintain its original design and manufacturing simplicity while the dedicated support frame provides the necessary strength for battery support.
Data Source
AI summary
A revolution frame includes a bottom plate and a main beam that rises upward from the bottom plate. The main beam extends in a forward/rearward direction in a central portion in a lateral direction of the revolution frame. A battery attachment support body is arranged on the main beam of the revolution frame.